Mesa/Boogie Three Channel Dual & Triple Rectifier Solo... User manual

OOGIE
B
MESA
Owner's Manual

Hello from the Tone Farm
...You, smart player and intuitive human, have put your trust in us to be your amplifi er
company. This is something we do not take lightly. By choosing this instrument to be a
part of your musical voice, you have become part of the Mesa family...WELCOME!
Our goal is to never let you down. Your reward is that you are the new owner of an amp,
bred of fi ne all tube heritage...benefi ting from the many pioneering and patented Mesa
circuits that led to the refi nement of your new model. We feel confi dent, this amp will
inspire many hours of musical satisfaction and lasting enjoyment. It was built with you in
mind, by players who know the value of a fi ne musical instrument and the commitment it
takes to make great music. The same commitment to quality, value and support we make
to you...our new friend.

OVERVIEW
_______________________________________________________________________
1-2
HELPFUL HINTS
__________________________________________________________________
2-3
INSTANT GRATIFICATION
_____________________________________________________________
3
FRONT PANEL CONTROLS & FEATURES
INPUT
_____________________________________________________________________________
4
FOOTSWITCH
______________________________________________________________________
4
DRIVE
_____________________________________________________________________________
4
CHANNEL SELECT
__________________________________________________________________
5
DRIVE / CLEAN
_____________________________________________________________________
5
THICK / NORMAL / THICKER
__________________________________________________________
5
GAIN
______________________________________________________________________________
6
TREBLE / MID / BASS
______________________________________________________________
7-8
PRESENCE / MASTER
________________________________________________________________
8
100 / 50 WATT: Channel Power Select
_________________________________________________
8-9
OUTPUT & SOLO CONTROLS
______________________________________________________
9-10
POWER: TWEED / OFF / ON & STANDBY
_______________________________________________
10
REAR PANEL CONTROLS, SWITCHES & JACKS
FUSE
_____________________________________________________________________________
11
RECTIFIER SELECT: Diodes & Tube Rectifi er Tracking
____________________________________
11
FX LOOP
__________________________________________________________________________
12
REVERB
__________________________________________________________________________
13
CHANNEL & SOLO: External Switch Ports
_____________________________________________
13
BIAS SELECT
___________________________________________________________________
13-14
SPEAKERS & SLAVE
______________________________________________________________
14
REVERB REMOTE JACK
_____________________________________________________________
15
FACTORY SAMPLE SETTINGS & PERSONAL SETTINGS SHEET
________________________
16-18
TUBE MAINTENANCE & DIAGNOSIS
________________________________________________
19-20
TUBE DESCRIPTION & TASK CHART
__________________________________________________
21
BIAS ADJUSTMENT: A feature article by Randall Smiths
______________________________
22-24
SPEAKER IMPEDANCE & POSSIBLE HOOK-UP SCHEMES - Amps to Speaker Cab
________
25-30
TRIODES, PENTODES & IRISHMEN: A feature article on the workings of tubes
____________
31-33
PART SHEET
______________________________________________________________________
34
TABLE OF CONTENTS

PRECAUTIONS & WARNINGS
Your MESA/Boogie Amplifier is a professional instrument. Please treat it with respect and operate it properly.
USE COMMON SENSE AND ALWAYS OBSERVE THESE PRECAUTIONS:
READ AND FOLLOW INSTRUCTIONS OF PROPER USAGE.
YOUR AMPLIFIER IS LOUD! EXPOSURE TO HIGH SOUND VOLUMES MAY CAUSE PERMANENT HEARING DAMAGE !
No user serviceable parts inside. Refer service to qualified personnel. Always unplug AC power before removing chassis.
EXPORT MODELS: Always insure that unit is wired for proper voltage. Make certain grounding conforms with local standards.
WARNING: EU: permission from the Supply Authority is needed before connection.
WARNING: Vacuum tube amplifiers generate heat. To insure proper ventilation always make
certain there is at least four inches (100mm) of space behind the rear of the amplifier cabinet.
Keep away from curtains or any flammable objects.
WARNING: Do not block any ventilation openings on the rear or top of the amplifier. Do not
impede ventilation by placing objects on top of the amplifier which extend past the rear edge of
its cabinet.
WARNING: Do not expose the amplifier to rain, moisture, dripping or splashing water. Do not
place objects filled with liquids on or nearby the amplifier.
WARNING: Always make certain proper load is connected before operating the amplifier.
Failure to do so could pose a shock hazard and may result in damage to the amplifier.
Do not expose amplifier to direct sunlight or extremely high temperatures.
Always insure that amplifier is properly grounded. Always unplug AC power cord before changing
fuse or any tubes. When replacing fuse, use only same type and rating.
Avoid direct contact with heated tubes. Keep amplifier away from children.
Be sure to connect to an AC power supply that meets the power supply specifications listed on
the rear of the unit. Remove the power plug from the AC mains socket if the unit is to be stored
for an extended period of time. If there is any danger of lightning occurring nearby, remove the
power plug from the wall socket in advance.
To avoid damaging your speakers and other playback equipment, turn off the power of all related
equipment before
making the connections.
Do not use excessive force in handling control buttons, switches and controls. Do not use
solvents such as benzene or paint thinner to clean the unit. Wipe off the exterior with soft cloth.

PAGE 1
Instruction Manual
REAR VIEW : LONE STAR
WARNING:
Unplug power
before replacing
fuse or removing
bolts mounting
chassis
SLAVE
POWER FUSE
4 A
SLO
BLO
120 V~
60 Hz
4 A
WER FUSE
FUSE
FUSE SILICON
DIODES
TUBE
RECTIFIER
TRACKING
FAN
ON
FAN
OFF
First set sound with
LOOP bypassed. Then
set SEND & OUTPUT
to 50% for unity gain.
With LOOP IN, adjust
SEND to match FX.
Use OUTPUT for
RETURN level and
live volume control.
SEND RETURN
NORMAL
MIN
SEND LEVEL
TUBE LOCATIONS
1 x 5U4 4 x 6L6
1 x 5U4 4 x 6L6
LOOP
IN
HARD BYPASS
OOGIE
B
MESA
LONE STAR
CH 2 REVERB CH 1
REVERB
BRIGHT
REV WARM
ALL - TUBE
AMPLIFIER
CHANNEL SOLO
EXT
SW
SPEAKERS
HAND BUILT IN PETALUMA CA.
8 OHM4 OHM 4 OHM
BIAS SELECT
EL-34
WHEN
RED ON
EL-34
6L6
CAUTION: SWITCH MUST
MATCH TUBES IN USE
INPUT
FT.SW
FRONT VIEW : LONE STAR
DRIVE
CH 1
FT SW
CH 2
THICK
THICKER
CLEAN
MAL
GAIN TREBLE MID BASS PRESENCE MASTER
100 W
50 W
100 W
50 W
OUTPUT LOOP ON SOLO
STANDBY
ON
POWER OFF
TWEED
NOR ON
Overview:
Congratulations
on your choice of the
Congratulations on your choice of the Congratulations
LONE STAR
as your amplifi er and Welcome to the
MESA/Boogie
Family!
MESA/Boogie Family! MESA/Boogie
This hand-built instrument was crafted with the fi nest quality components and designed to provide you with years of musical inspira-
tion and toneful satisfaction.
From a glance you can see the
LONE STAR
is laid out simply and logically. Its clean, two channel layout provides a platform for ultimate
expression with a minimal learning curve. Though you have probably experienced the magic of its character already, this guide will
help you to understand the interaction of the controls and features…allowing you to fi nd your sound more quickly and deviate from
there easily in new musical environments.
The two channels provide the entire range of gain, from sparkling clean to totally saturated, and anywhere in between. Channel 1(top)
is based on a traditional gain structure to produce angelic and warm clean sounds in its low to medium gain ranges. Like most great
amps, this channel can be driven to clip and produces incredible solo possibilities for blues or roots chording styles.
Channel 2 has a split personality and can either be set to achieve a slightly gainier clone of Channel 1 or, with the fl ick of a switch
become a high gain preamp. Switching in the DRIVE control adds 2 more triode stages and an additional gain control to meter in the
exact blend of smooth singing saturation. The bipolar nature of Channel 2 allows the
LONE STAR
to roam effortlessly through both
vintage and modern territory with full channel switching accuracy and an emphasis on soul and simplicity. You can set up the amp for
two low gain channels, one for sparkling clean and the other driven into an old school clip or, one for low gain clean and the other for
high gain singing sustain.
The
LONE STAR
takes channel switching further and allows you to choose the amount of power and type of rectifi cation you want
to combine with each preamp channel. The choices are 50 or 100 watt power ratings and Tube or Silicon Diode rectifi cation. For
ultimate clip-ability and a vintage-squish feel, choose 50 watts and Tube rectifi cation. For clean headroom and tight tracking
accuracy, select 100 watts and the Diodes are automatically brought on line to keep things bold and authoritative. These power- se-
lectable-per- preamp channels are incredibly intuitive and allow for extreme stylistic accuracy when dedicating the two channels to
your footswitching needs.

PAGE 2
Overview: (Continued)
The OUTPUT control is joined by our SOLO feature that provides an additional master output that you can trigger remotely for a
footswitchable boost when you want to feature a part. These two Front Panel controls are brought on line with the activation of the
Effects Loop. When the Loop is not active, the individual Channel Master controls serve as fi nal output controls. When the Loop is set
to HARD BYPASS, all associated circuitry is removed (for you purists) from the signal path. Since the Output and SOLO controls are
wired as Loop Returns, at the end of the preamp and Loop signal path, they are defeated when the Loop is bypassed. The Power
switch is fi tted with LOW and (high/normal) ON settings to provide a built in variac so that incoming AC voltage can be reduced to
produce a spongier feel and increased clip-ability. This ability to run everything in somewhat of a brown-out state produces amazing
possibilities for the clean sounds that are driven to clip.
As mentioned above the Effects Loop handles outboard processing with fi nesse. The ability to HARD BYPASS the loop entirely assures
the purist in you will be satisfi ed in the studio where every nuance of tone is crucial and you don’t need the SOLO feature.
The pure, all tube Reverb is fi tted with a Bright/Warm switch that enables you to tailor the reverb sound to the style you are playing.
Bright delivers a vintage-inspired sound complete with the identifi able haze of harmonics associated with older amp circuits, while
WARM produces a more pure, studio quality character. Individual blend controls for each channel allow you to get the mix just right
for each of the sounds you have designated to the two channels.
External switch ports are provided to assure that you can interface the
LONE STAR
with larger rack or multiple amp setups. The Chan-
nels and SOLO feature will respond to any tip-to-ground latching type logic at their corresponding jacks. You can control these features
via external and/or midi commands with any switcher that supports grounding type logic within their programmable menus.
A Switchable BIAS SELECT feature allows you to swap tube types in the power section for different response characteristics. Use the
stock 6L6 type tubes for the greatest versatility, or swap them out for a quartet of EL34 for a brighter, looser feel and added harmonic
spread. Always use the proper setting of the BIAS SWITCH for the tube type in use!
And fi nally, a SLAVE Output and Level control round out the Rear Panel enabling you to use the
LONE STAR
as the “dry” master
amp for a stereo setup, drive an external rack of outboard processing or, simply add additional power for larger venues. Unlike the
EFFECTS SEND jack, this output captures the entire sound of the preamp and power section and is generated by padding down the
signal at the speaker output.
NOTE:
Once you have taken a signal from the SLAVE Output - do not go back in to the EFFECTS LOOP RETURN jack. Doing so
will create a feedback loop and squealing will occur.
That covers the features of the
LONE STAR
, so let’s move on to the individual controls and how they interact so you can fi nd your
sound. First though, here are a few helpful hints to get you started.
1.)
After unpacking your new amplifi er, save the packing material and box should you move or ever want to ship you amplifi er.
2.)
Remove the plastic webbing from the power tubes before connecting the A.C. power cable!
3.)
Make sure the A.C. power cable is connected to a grounded (3 hole) socket.
4.)
Make all speaker connections with unshielded speaker cable.
5.)
Make all external processing connections to the EFFECTS LOOP with shielded cable.
HELPFUL HINTS:

PAGE 3
6.)
When the Footswitch is not available or desired, use the Front Panel mini toggle to select the two channels.
7.)
The Front Panel OUTPUT and SOLO controls are not active until the Effects Loop is switched to the LOOP ACTIVE position. Use
the Channel MASTER controls for output volume level when the LOOP is set to HARD BYPASS.
8.)
As with all
MESA
amplifi ers, the
LONE STAR
controls really work and are extremely powerful. You will fi nd most of the best
sounds will be produced by setting the controls in their middle ranges, and very rarely higher than 3:00. The balance between them is
the important part and they are most interactive when no one dominates the mix. Adhering to this scheme will avoid excessive tube
noise and possible microphonic preamp tube problems.
9.)
Use the LOW power setting on the A.C. POWER switch in combination with the TUBE RECTIFIER TRACKING selection on the
Rear Panel to achieve the best soft clip characteristics when searching for vintage inspired sounds.
10.)
When connecting your processing to the Effects Loop follow these steps;
1.
Set up your two Channels for the desired sounds
2.
Balance the volume of the Channels with the Channel Masters
3.
Connect your processor Input to the Effects Loop SEND
4.
Connect
processor Output to the Return
5.
Activate Effects Loop (LOOP ACTIVE)
6.
Set processor Input Level control for unity gain (0db)
7.
Adjust the overall Effects Loop SEND LEVEL control to fi ne tune the processors Input signal.
8.
Adjust overall playing volume with
the
LONE STAR’s
Front Panel OUTPUT control.
11.)
If you are using the amplifi er with both Channels set to the 50 watt output setting, try connecting an 8 ohm load to the 4 ohm
jack. This scheme provides a brighter, snappier response and is preferable for certain styles.
12.)
When swapping from the stock quartet of 6L6 output tubes to EL34,
always check the BIAS SWITCH. Make sure it is set to
match the tube type in use. Failure to do this may cause damage to your amplifi er!
13.)
It is possible to install a quartet of 6V6 power tubes to achieve a lower overall power rating and a looser, breathier power feel.
Make sure you set the A.C. POWER switch to low when using these tubes and keep the BIAS SWITCH set for 6L6 operation. It is also
advisable to load the amplifi er with an 8 Ohm speaker load on the 4 Ohm jack. This scheme provides the best response while at the
same time reducing stress on the tubes. Try the settings below to audition a couple of possible ways to setup the two channels.
Now let’s move on to understanding the individual controls and their interactive roles in shaping the sounds
you
want to hear.
you want to hear.you
GAIN TREBLE MID BASS PRESENCE MASTER
SAMPLE #1. Sparkling Clean / Singing Lead
DRIVE
CH 1
FT SW
CH 2
THICK
THICKER
CLEAN
MAL
GAIN TREBLE MID BASS PRESENCE MASTER
SAMPLE #2. Roots Clean / Old School Clip
NOR
Instant Gratification Demo Settings
STANDBY
ON
POWER OFF
ON
OUTPUT LOOP ON SOLO
OUTPUT LOOP ON SOLO
TWEED
STANDBY
ON
POWER OFF
ON
TWEED
100 W
50 W
100 W
50 W
100 W
50 W
100 W
50 W
INPUT
FT.SW
DRIVE
CH 1
FT SW
CH 2
THICK
THICKER
CLEAN
MAL
NOR
INPUT
FT.SW
HELPFUL HINTS: (Continued)

PAGE 4
FRONT PANEL: Controls & Features
INPUT:
This is the instrument
INPUT
jack. This jack feeds the preamp and since the
LONE STAR
is a high gain amplifi er and
therefore very sensitive, always use a high quality shielded cable between the instrument and the amplifi er. This will prevent unwanted
noise and microphonic cable sounds.
FOOTSWITCH:
This 1/4 inch ” stereo jack is for connection of the Channel Select Footswitch. When the
FOOTSWITCH
is con-
nected here with the provided stereo cable, the Channels and SOLO feature may be controlled remotely.
DRIVE:
This is the pre-drive control for the high gain preamp in Channel 2. It may be switched out of the circuit, along with its
associated tube stages, to create a slightly higher gain clone of Channel 1 in (this bottom) Channel 2. When the
DRIVE
control is
activated (switch left, towards
DRIVE
), this control operates in conjunction with the GAIN control to meter the amount of preamp drive
that will be introduced into the circuit.
Generally speaking, you will fi nd better response and dynamics combined with smoother saturation
by setting the GAIN control higher than
DRIVE
. In fact you might try leaving the GAIN set to 2:00
or 3:00 and just playing with the
DRIVE
to learn the regions of saturation. You will probably fi nd the
more blues oriented sounds between 9:00 and 11:00, while the really saturated high gain sounds
appear between 1:00 and 3:00.
Setting the GAIN control slightly higher than the
DRIVE
will produce a warmer quality to the sound
and in most cases this is preferable. By all means experiment with setting the GAIN lower than the
DRIVE
, as the brighter, thinner
character may be desirable for your application.
Learning the relationship between these two controls is probably the most important element to fi nding your signature lead sound.
They are extremely powerful, as they control how your guitar feeds the preamp and also determine the signal strength that is pumped
through the tone control string. This in turn affects how the tone controls will respond. At extremely high settings you will be hearing
mostly gain saturation as the tone controls become recessive due to over-saturation.
This is fi ne if complete saturation is the desired effect, but remember, many of the best sounds are found with more moderate settings
where the gain controls interact with the tone control string to produce a balance of frequencies.
INPUT
FT.SW
INPUT
FT.SW
INPUT
FT.SW
DRIVE
CH 1
FT SW
CH 2
THICK
THICKER
CLEAN
MAL
NOR

PAGE 5
FRONT PANEL: Controls & Features (Continued)
CHANNEL SELECT:
This 3 position mini toggle allows manual selection of the Channels when the Footswitch is not connected.
Set it to the center FT-SW position to use the Channel Select Footswitch.
DRIVE / CLEAN:
This switch is responsible for activating the
DRIVE
circuitry in Channel 2. Set to
DRIVE
, the overdrive circuitry is
active and additional tube stages are added in front of the normal “rhythm” circuitry to produce a multi-stage high gain lead channel.
Set to
CLEAN
, all overdrive circuitry is removed and Channel 2 is a slightly higher gain clone of
Channel 1. Because of this additional gain in what is otherwise a “rhythm” circuit, Channel 2 is
an amazing solo channel for Roots style rhythm work or howling blues solo sounds. Cranking the
GAIN control in Channel 2
CLEAN
is a wonderful alternative to the more saturated sound of the
DRIVE
circuit.
You will fi nd ample gain to get notes to sound fat and singing, and still retain all of the urgent
dynamics of a clean sound that is driven to clip.
THICK / NORMAL / THICKER:
This 3 position mini toggle allows you to select between three different voicings. It selects what
frequency the Treble control will enhance. By lowering the frequency of the treble capacitor, additional gain in these frequencies is
added. This allows you to shape the sound for either sparkling clean sounds, or fatten up the Treble region and thicken the sound for
more voice like single note solo sounds. Spend some time experimenting with this switch as it can be crucial to attain the lead sound
you are searching for as well as allowing you to cop the vibe of several classic amp styles.
NORMAL
is the best choice for clean chording and traditional blues style single note solo sounds.
In this position the highest frequencies are passed through with the best balance between the
three tone controls gain wise. In other words the gain of the Treble region is in line with that of
the Bass and Mid. Here the most sparkle and shimmer will appear and a beautiful blend will be
easy to achieve for all your clean work. The
NORMAL
selection will also let the true character
of your individual guitar shine through more than the gain enhanced character of the other two
choices. When searching for identifi able signature sounds,
NORMAL
would be the best choice
for traditional “black face” style clean or clipped sounds due to this lack of alteration of the classic
treble frequencies.
THICK
lowers the frequency of the Treble region while keeping the gain closer to that of the
NORMAL
setting. This selection fattens
the upper region and smears the line between Mid and Treble to achieve a more robust, throatier sound.
THICK
is the best choice
when searching for classic british style response for either chording or overdriven sounds. You might think of it as a “plexi” switch.
THICKER
lowers the Treble frequency even further and adds considerable gain in that region. It can enhance high gain solo work by
saturating the sound and covering up fret buzz, weak pickups or other nuances that will appear as holes in a high gain lead sound.
It allows you to retain focus at extreme gain settings while at the same time reducing the dreaded buzziness that can appear with
certain guitars or speaker choices. This setting has appeared in various clothing on virtually all
MESA
amplifi ers through the years
and is classic
Boogie.
THICKER
is the choice for the trademark singing sustain that has long been associated with our amplifi ers.
INPUT
CH 1
FT SW
CH 2
INPUT
FT.SW
DRIVE
CH 1
FT SW
CH 2
THICK
THICKER
CLEAN
MALNOR
INPUT
FT.SW
DRIVE
CH 1
FT SW
CH 2
THICK
THICKER
CLEAN
NORMAL

PAGE 6
FRONT PANEL: Controls & Features (Continued)
GAIN:
This control adjusts the predominant gain stage in each channel’s circuit with the function and taper being optimized for each
individual channel. Remember that your
LONE STAR
is really two amplifi ers built onto one chassis, so though each channel looks
identical, the
GAIN
control for each channel comes in a different place and adjusts a different point in that channel’s circuit.
In most guitar amplifi ers, and especially in all-tube circuits, the
GAIN
control is the most
powerful control in the preamp. It shapes the overall style and character of the sound and
is responsible for whether the sound is clean, overdriven or anywhere in between. In your
LONE STAR
the
GAIN
control is even more powerful. It not only determines the amount
of drive, but also acts as an integral part of the tone control string as well.
To simplify the
GAIN
controls’ role in shaping the overall tone of the sound we will look at
it in two ways -
1)
alone and
2)
in conjunction with the tone controls.
1) By itself the GAIN control has basically three tonal regions -
Low ( 7:00 - 11:00 )
provides the cleanest, least saturated sounds and in this region the sound will be brighter and contain more
upper harmonics lending a three dimensional character to the sound.
Middle ( 11:15 - 2:00 )
enhances the saturation and replaces some of the upper harmonics with a richer, warmer quality and a
fuller bottom end response. Not yet fully saturated, this region is the easiest place to get a great sound in both channels. This region
contains many of the
LONE STAR’s
best sounds...especially for soloing due to the crucial blend of an expressive attack combined
with ample sustain.
High ( 2:15 - 5:00 )
saturates the signal and enhances low and low mid frequencies. While this region provides the maximum satu-
ration and therefor sustain, it also compresses and softens the attack characteristics. For this reason we suggest using this higher
region of the
GAIN
control sparingly and only when maximum sustain is needed.
NOTE:
NOTE: NOTE:
Due to the
LONE STAR’s
extreme gain potential, the highest regions of the
GAIN
control may possibly push the pre-amp
tubes past what they can handle, producing microphonic squealing. While we screen and test the tubes your amplifi er was shipped
with and the tubes in your amp passed our rigourous test, we can’t predict how the tubes will respond over time exposed to extreme
gain settings. Your tubes are warranted for a period of 6 months under normal use, but you can save yourself the present and future
inconvenience of having to deal with annoying microphonic tube problems by simply using
a little common sense...Use the Gain
sparingly at the higher end of its range!
If you must for a specifi c part or at very low volumes, back down the TREBLE and PRESENCE controls. The
LONE STAR
was de-
signed to provide amazing gain and tone at less than extreme settings removing the need for you to crank everything all the way up.
If you are not able to achieve the sound you want at sensible settings on any or all of the controls, your problem may lie elsewhere in
the signal chain, i.e. pick-ups, cabinetry, processing etc. Keep in mind you can always call on one of our product specialist Monday
through Thursday and seek some advice should you fi nd yourself struggling to get the sound you want.
2.) GAIN - In conjunction with the Tone Controls -
Basically, a simple rule applies...as the Gain is increased the Tone control string
has less and less effect on the signal until at 5:00 the signal is so saturated that you are
getting mostly Gain and very little Tone
. Again,
this is the reason we suggest using the
GAIN
control in its middle region. Here the Tone control string is very active and provides
maximum shaping power - allowing you to dial virtually any sound you desire.
INPUT
FT.SW
DRIVE
CH 1
FT SW
CH 2
THICK
THICKER
CLEAN
MAL
GAIN
NOR

PAGE 7
FRONT PANEL: Controls & Features (Continued)
TREBLE:
As in most tube guitar amplifi ers, the
TREBLE
control ( in both channels of your
LONE STAR
) is the most powerful
of the rotary controls and is next in line only to the GAIN control as a shaping tool. Because it is fi rst in the signal path of the tone
controls - and from here the Middle and Bass receive their signal - it is by far the dominant tone control. For this reason the setting of
the
TREBLE
control is very important for equal representation of the three frequency regions to appear at their respective controls.
Like most of the controls on your
LONE STAR,
there is an optimum region of
the
TREBLE
control where ample top end is mixed in and yet enough signal
is still passed on to the MIDDLE and BASS controls.
As you might surmise, here is the
sweet spot
.
sweet spot. sweet spot
There are defi nitely great sounds
above and below this middle region ( 11:00 - 1:30 ), but the balance between
the
TREBLE
control and the other two tone controls is compromised.
The
TREBLE
control can be used to dump extra gain into the mix. This is
especially effective in CHANNEL 1 and Channel 2 with the DRIVE bypassed. When doing so, use the PRESENCE control to roll off
some of the more than ample top end for a more compressed feel and fatter voice. As you might surmise, the BASS control’s effective-
ness will be reduced, so you may have to run a much higher setting than you are used to seeing to achieve a balance.
MID:
The
MID
control is responsible for the blend of midrange frequencies in the mix and though its effect is not as dramatic as
that of the TREBLE control, it plays an integral part in achieving any sound in your
LONE STAR.
It is capable of changing the feel
dramatically as it blends in a group of frequencies that tend to soften or stiffen the way a sound feels to play.
Most players tend to lean in the direction of lower
MID
control settings ( 7:00 - 11:00 ) where a scoop in this region produces
girth
( by
letting the Bass become a little more dominant ) and a lack of punch lends a more compressed,
even
feel to the strings and therefore
even feel to the strings and therefore even
less apparent resistance to the pick. As the
MID
control is increased, ( 11:30 - 1:30
) the sound is rounded-out and fi lled-in with a focused mid attack appearing rather
quickly. As you would guess, the feel starts to change - becoming more resistant.
Above this region the
MID
control could be used to compensate for either weaker
pick-ups or for times when a specifi c defi ciency is produced by either an extremely
high setting of other tone controls, or a physical anomaly in the room. While these
MID
control settings ( 2:00 - 5:00 ) can introduce added gain and create enhanced
focus, the trade-off will be a stiffer, more forward, less compressed feel.
BASS:
The
BASS
control in your new
LONE STAR
works similarly in both channels in that it determines the amount of low fre-
quencies present in a sound. However, the
style of lows
it mixes in changes from channel to channel. Like the MID control, it falls in
style of lows it mixes in changes from channel to channel. Like the MID control, it falls in style of lows
line signal-wise
after
the TREBLE control and the same scheme applies. When the TREBLE control is set high, the effectiveness of
after the TREBLE control and the same scheme applies. When the TREBLE control is set high, the effectiveness of after
the BASS and MID controls is reduced. If the TREBLE control is set low these two controls
become dominant.
For the most balanced sound and a balance of power between the three rotary tone controls,
try to use the TREBLE control in its middle ranges. This scenario produces nearly equal repre-
sentation of all the frequencies on the tone controls and provides a great neutral starting point
for further tweaking.
INPUT
FT.SW
DRIVE
CH 1
FT SW
CH 2
THICK
THICKER
CLEAN
MAL
GAIN TREBLE
NOR
CH 1
FT SW
CH 2
THICK
THICKER
CLEAN
MAL
GAIN MID
TREBLE
NOR
TREBLE BASS MID

PAGE 8
FRONT PANEL: Controls & Features (Continued)
BASS: (Continued)
Note:
The
BASS
control in both channels of your
LONE STAR
is very powerful and though we have taken
steps to ensure a balanced tone is easy to achieve, it is wise to blend with subtle nuance in mind. This is especially true in Channel
2 when using either the regular Channel 1 style gain circuitry cranked, or the DRIVE circuitry for higher gain lead sounds. A good
rule to follow is this; as you increase the GAIN reduce the BASS. Following this scheme will retain balance and keep the attack of the
notes dynamic, tight and touch sensitive.
PRESENCE:
The
PRESENCE
control is a high frequency attentuator that is placed at the end of each channels pre-amp stage
and affects frequencies higher than those of the TREBLE control. It acts independently of the other rotary tone controls and is crucial
in voicing the Channel. It is a powerful global tone control. Lower
PRESENCE
control settings darken and, in fact compress the signal
which works well to fatten single note solo sounds, giving them girth and focus.
Some of the best lead sounds in your
LONE STAR
will fi nd the
PRESENCE
control
in it’s lower regions, where a balanced, vocal response is achieved.
MASTER:
This control is the master feed from the end of the pre-amp to the driver stage and the Effects Loop. As you can see each
Channel is fi tted with its own
MASTER
control, enabling both channels relative volumes to be matched regardless of their extremely
different sound styles and gain signatures. The
MASTER
control makes possible a wide range of sounds through its ability to use
very low Gain sounds at high volumes and conversely, high Gain sounds at low volumes and everywhere between.
Again, we suggest using the
MASTER
control in its
sensible
ranges ( 9:00 - 2:00 ).
sensible ranges ( 9:00 - 2:00 ). sensible
Here, the channels will be easier to match with each other and the Effects Loop will see
more reasonable signal levels.
NOTE:
Because the
MASTER
control creates the send to the Effects Loop, extreme
settings will cause a large signal to be sent to the Loop for that Channel. Not only may
this cause possible overloading of the processors Input stage, but will make balancing
both channel’s Effect Send level diffi cult.
NOTE:
When the Effects Loop is set to HARD BYPASS, the individual Channel MASTER controls act as the fi nal output controls.
This is a result of removing all associated Loop circuitry - and since the OUTPUT and SOLO controls are part of the Effects Return
stage - they are bypassed as well.
100W / 50W: Channel Power Select:
These channel specifi c mini toggle switches allow you to preset the output power of each
channel.
In the 100 watt setting (up) all four 6L6 are on line,
delivering maximum power and punch.
The 50 watt setting runs
only the outside (far left & far right) tubes
to achieve the bubbly elastic bounce only a
pair of 6L6 can achieve. This powerful feature can be crucial to the sound style you wish
to dedicate to each of your two channels.
For example you might want to use Channel 1 set to 100 watts and use all four 6L6’s to
achieve the ultimate clean headroom and power. Meanwhile, Channel 2 could be cranked
and dedicated to a power clip solo sound by setting the power select switch to 50 watts
and bypassing the DRIVE circuitry for an awesome old school power section pushed
TREBLE PRESENCE MID BASS
MASTER
BASS PRESENCE
100 W
50 W
100 W
50 W
100 W
50 W
100 W
50 W
OUTPUT LOOP ON SOLO
MASTER

PAGE 9
FRONT PANEL: Controls & Features (Continued)
100W / 50W: Channel Power Select (Continued)
tone. This scheme would be further enhanced by selecting the TUBE RECTIFIER:
TRACKING setting on the Rear Panel RECTIFIER SELECT switch.
Or, you might want the opposite and set Channel 1 to 50 watts of sparkling, yet forgiving clean performance and go for the bold auth-
ority of 100 watt power for Channel 2 set to a soaring high gain voice using the DRIVE circuitry.
Whatever scheme you choose to use, the ability to select the power rating of each channel adds incredible expression power to the
LONE STAR
.
NOTE:
The RECTIFIER SWITCH (Rear Panel) has a built in RECTIFIER TRACKING feature that ensures proper matching for each
power setting. In 50W, either a TUBE RECTIFIER or a silicon DIODE may be chosen as the rectifi cation element with the Tube offering
the most give and elasticity. In the 100W setting, DIODE rectifi ers are automatically brought on line and this is a proper match which
provides the reliable and powerful headroom of a 4x6L6 output section.
NOTE:
At some point in your experimentation with the Channel Power Select switches, try setting one or both of the Channels to
50W and moving the Speaker Load to the 4 Ohm jack. This produces a brighter, snappier response that is great for certain applica-
tions, especially clean sounds. There is no right way, but the difference in response is defi nitely worth investigating for both clean and
overdriven sounds.
OUTPUT & SOLO CONTROLS:
OUTPUT:
This control determines the overall output volume level of the amplifi er. After the
GAIN controls have been set for the desired sound style and the two channels levels have been balanced with the channel MASTER
controls, the
OUTPUT
control allows you to change the playing level by adjusting a single
control. The
OUTPUT
control is also wired as the Effects Loop Return Level control.
Should you ever use your
LONE STAR
amplifi er
as a power amp alone by inserting a signal
into the RETURN jack, the
OUTPUT
control will serve as the master level control.
NOTE:
NOTE: NOTE:
To use the
LONE STAR
amplifi er
as a power amp - use the EFFECTS RE-
TURN as an input. The SOLO control can be used to attain a footswitchable boost if the
Footswitch is connected. It is wired in parallel to the
OUTPUT
control and therefore also
OUTPUT control and therefore also OUTPUT
controls the volume of the power section.
NOTE:
NOTE: NOTE:
The Effects Loop RETURN jack can serve as a power amp input so that you may use the
LONE STAR
amplifi er
as a power
amp for either stereo reproduction or to incorporate additional pre-amps. Here are a few things to remember that will help you when
interfacing to the
LONE STAR
for use as a power amp only;
1.)
Connect “Dummy” plug or loose cable to SEND jack. ( This prevents any possible loading that could result in diminished RETURN
sensitivity.)
2.)
The OUTPUT Level will be the only active control on the Front Panel (the PRESENCE control of Channel 1 will be active only
when that channel is engaged - see #3 )
3.
) The SOLO control may be used to footswitch to a pre-determined amount of boost when the footswitch is connected.
NOTE:
Therefore, we recommend selecting Channel 1 when you wish to use the
LONE STAR
as a power amp.
OUTPUT LOOP ON SOLO
MASTER
100 W
50 W
100 W
50 W

PAGE 10
FRONT PANEL: Controls & Features (Continued)
OUTPUT & SOLO CONTROLS: (Continued)
SOLO: This control can only be activated if the correct Footswitch is connected
to the Footswitch DIN jack.
SOLO
is an additional fi nal output level control wired in parallel with the OUTPUT control. It is capable
of a setting above that of the OUTPUT control and can not be set below. The amount
of apparent boost also depends on that of the OUTPUT control - in that if the amplifi er
is at either the extreme low or extreme high levels of the OUTPUT, its effectiveness is
minimized. It has been optimized for live performance volume levels.
If the power section is either not a part of the sound (super quiet), or producing all its
rated wattage (super loud), there is very little signal for the
SOLO
control to work with. By
using the Footswitch and selecting
SOLO
, a pre-settable boost in overall levels is possible
on the fl y...giving you some control over your levels when it’s time to step out. Engineers
may give you a bit of a frown the fi rst time you use it...but isn’t it time you heard yourself. It might even prevent them from punishing
you with the dreaded monitor or sidefi ll version of your tone.
POWER: TWEED / OFF / ON
This sideways 3 position toggle switch determines the status of the incoming AC power. Your
LONE STAR
incorporates a built-in VARIAC feature that enables you to reduce the line voltage to approximately 93 volts (with a
steady 117 at the wall). This
TWEED
power setting produces a spongier, scoopier response and allows you to power clip the amplifi er
at lower overall volumes. It is especially useful in achieving old school clip sounds in Channel 1 and Channel
2 with the DRIVE bypassed.
These sounds are further enhanced when the
TWEED
power feature is used in combination with the 50 watt
setting and TUBE RECTIFIER:TRACKING is selected. Another bonus is that if you were to use the
TWEED
power setting often, tube life would increase substantially.
For maximum power, normal response and the greatest headroom use the
ON
setting of the AC power switch.
STANDBY:
Perfect for set breaks... this toggle switch also serves an even more important purpose. In the Standby position the
tubes are at idle so that during power up they may warm up before being put to use. Before Power is switched on make sure the
STANDBY
switch is in the Standby position.
Wait at least 30 seconds and then fl ip the
STANDBY
switch to the ON position. This prevents tube problems
and increases their toneful life substantially.
Now that we have reviewed the features and controls of the Front Panel and you have a handle on how they interact to achieve the
sound
you
want, let’s move to the Rear Panel and cover the features found there.
you want, let’s move to the Rear Panel and cover the features found there.you
OUTPUT LOOP ON SOLO
MASTER
100 W
50 W
100 W
50 W
STANDBY
ON
POWER OFF
TWEED
ON
STANDBY
ON
POWER OFF
TWEED
ON

PAGE 11
REAR PANEL:
FUSE:
This is the A.C.’s (Alternating Current) main fuse and provides protection from outside A .C. fl uctuations as well as power
tube failure damage. Should the
FUSE
blow, replace it with the same rating in a Slo-Blo type package. The domestic U.S. version
requires a 4 amp Slo-Blo
FUSE
. A power tube short or failure is often the cause of a blown
FUSE.
..Follow the cold start procedure
mentioned in the ON/STANDBY switch section and watch the power tubes as you fl ip the STANDBY to the ON position. If a power
tube is going bad or is arcing you will see it! Flip the STANDBY switch to Standby immediately and replace the faulty power tube and
the
FUSE
if necessary.
If you see nothing abnormal as you switch the STANDBY on, it is possible that a power tube shorted tempo-
rarily and blew the
FUSE
. If this is the case it may work again normally. To be safe, you might want to replace
just the adjacent tube or all power tubes in the “shotgun” troubleshooting tradition and save the replaced set
as spares. Spare fuses are a must for the fabled cord bag along with your spare tubes. Always carry both for
they could be worth their weight in gold someday.
RECTIFIER SELECT: Diodes / Tube Rectifi er Tracking
This two position toggle selects the type of rectifi er, Silicon Diodes or
Tube, to convert the voltage from AC to DC for the power supply. The
LONE STAR
incorporates a further improved version of our
patented Switchable Rectifi er feature fi rst seen on the
Dual and Triple Rectifi er SOLO
heads. It incorporates a Rectifi er Tracking™
Dual and Triple Rectifi er SOLO heads. It incorporates a Rectifi er Tracking™ Dual and Triple Rectifi er SOLO
feature that insures proper voltage is present at all times and improves reliability. This switch operates in tandem with the individual
Channel Power Select (50/100) switch located on the right side of the Front Panel.
The Rectifi er Tracking feature monitors the Channels, determines their power status and automatically selects
the proper rectifi er type - which ultimately assures the best sound. This provides optimization of the power
settings, delivering a magical tube-rectifi ed power-sag vibe for the channel set to 50 watts - and a tighter,
bolder 100 watts of diode-rectifi ed authority for the channel set to full power.
Selecting
DIODES
chooses the solid state diode rectifi ers which deliver maximum power and headroom, while tracking tighter and
imparting a quicker transient response and bolder attack. When set to
DIODES
, both Channels will respond with this character
regardless of their individual power settings on the Front Panel. Selecting
TUBE RECTIFIER TRACKING
engages the 5U4 rectifi er
tube automatically (either or both channels) whenever the 50 watt selection is made on the Front Panel Channel Power Select switch.
When switching to the opposite channel, if the Channel Power Select is set to 100 watts, the Diodes are automatically engaged to
insure proper matching to the added load on the supply.
This innovative feature allows you to tune each channel for the ultimate power expression and feel. With this fl exibility you can switch
between a high power, spanking clean rhythm sound in Channel 1- and a saggy brown, old school power clip for bluesy single note
solo work with the DRIVE bypassed in Channel 2. Or conversely, set Channel 1 for a sweet low power clean sound and crank up the
horsepower with the DRIVE active to articulate a high gain solo voice in Channel 2. Regardless of the way you choose to dedicate
your Channels, you will fi nd this power section fl exibility a remarkable step forward toward your ultimate tone.
NOTE:
Don’t forget the Front Panel AC switch incorporates the reduced voltage TWEED setting. This adds yet another dimension to
the power expression scenario and can produce amazing results when combined with the
TUBE RECTIFIER TRACKING
feature. Be
sure to experiment with these two features in combination with each other.
WARNING:
Unplug power
before replacing
fuse or removing
bolts mounting
chassis
POWER FUSE
4 A
SLO
BLO
120 V~
60 Hz
4 A
POWER FUSE
FUSE
FUSE DIODES
TUBE
RECTIFIER
TRACKING
WARNING:
Unplug power
before replacing
fuse or removing
bolts mounting
chassis
POWER FUSE
4 A
SLO
BLO
120 V~
60 Hz
4 A
POWER FUSE
FUSE
FUSE DIODES
TUBE
RECTIFIER
TRACKING
WARNING:
Unplug power
before replacing
fuse or removing
bolts mounting
chassis
SLAVE
POWER FUSE
4 A
SLO
BLO
120 V~
60 Hz
4 A
WER FUSE
FUSE
FUSE SILICON
DIODES
TUBE
RECTIFIER
TRACKING
FAN
ON
FAN
OFF
First set sound with
LOOP bypassed. Then
set SEND & OUTPUT
to 50% for unity gain.
With LOOP IN, adjust
SEND to match FX.
Use OUTPUT for
RETURN level and
live volume control.
SEND RETURN
NORMAL
MIN
SEND LEVEL
TUBE LOCATIONS
1 x 5U4 4 x 6L6
1 x 5U4 4 x 6L6
LOOP
IN
HARD BYPASS
OOGIE
B
MESA
LONE STAR
CH 2 REVERB CH 1
REVERB
BRIGHT
REV WARM
ALL - TUBE
AMPLIFIER
CHANNEL SOLO
EXT
SW
SPEAKERS
HAND BUILT IN PETALUMA CA.
8 OHM4 OHM 4 OHM
BIAS SELECT
EL-34
WHEN
RED ON
EL-34
6L6
CAUTION: SWITCH MUST
MATCH TUBES IN USE

PAGE 12
REAR PANEL: (Continued)
FX LOOP: Series
The
LONE STAR
handles outboard processing by providing an on-board patch point between the preamp
and power section. This loop is wired such that the dry signal is in series with the effected (wet) signal. The circuit also incorporates
a
SEND LEVEL
control allowing you to fi ne tune the output of the preamp circuit to match the input sensitivity of your processor
(or fi rst processor in a rack system). The
EFFECTS LOOP
circuitry
can be completely removed from the signal path with the
HARD
BYPASS/LOOP IN
mini toggle. This removes all associated loop
circuitry and two tubes from the chain and ensures the purest signal
path and maximum sonic performance when outboard processing is
not being used. The
SEND
and
RETURN
jacks incorporate switching
elements so that you may use the
LOOP IN
selection and activate
the Front Panel OUTPUT and SOLO controls with nothing connected
to the Loop.
NOTE:
The Front Panel OUTPUT and SOLO controls are both part of the Loop and therefore active only when the Effects Loop
is engaged. They are both part of the Return stage and will remain inactive as long as the loop bypass mini toggle is set to
HARD
BYPASS.
To connect your outboard processor(s) to the Effects Loop;
1.)
Connect the
SEND
jack on the
LONE STAR
Rear Panel to your processor’s INPUT using a high quality shielded cable of the
shortest possible length.
2.)
Connect the
RETURN
jack of the
LONE STAR
to your processor’s OUTPUT also using a high quality shielded cable of the short-
est possible length.
3.)
Adjust the
SEND LEVEL
control on the Rear Panel of the
LONE STAR
to achieve an adequate match on the INPUT level indicator
of your processor. Adjust the processor Output level stage (hopefully your processor has an OUTPUT LEVEL control) to match the
volume present before connecting the device(s) to the
LONE STAR.
You can check this by simply removing both the cables from the
SEND
and
RETURN
simultaneously.
4.)
Use the Front Panel OUTPUT control to raise and lower the overall volume as it is essentially an Effects Return Stage volume
control.
NOTE:
It is normal to experience some amount of change to the sound when using the
EFFECTS LOOP.
Normally this is minimal
and most often appears as a subtle roll off in top end characteristics. This is a series loop and therefore the results you get using
it greatly depend upon the quality of the devices you insert into the loop. We strongly suggest taking your amplifi er and trying any
processor before buying it to make sure it is compatible with the
LONE STAR.
Normally, the more professional series lines of most
companies building outboard gear work well. However we have seen even so called pro stuff produce less than satisfactory results
in terms of tonal thievery.
NOTE:
Engaging the
EFFECTS LOOP
circuitry adds a substantial amount of circuitry and two tubes and this additional circuit re-
verses the phase of the entire amp. This is no cause for alarm and if we hadn’t told you of this, you probably would never have known.
Sonically there is no difference other than the incredibly subtle difference in the sound the circuit itself adds.
The only time you will ever need to consider this reversal of overall phase is if you ever run the
LONE STAR
in Stereo with another
amp (not another
LONE STAR
as it would be in phase with its Loop activated). In this case you would probably want to separate the
two amplifi ers by at least a few feet if not on the other side of the stage.
NORMAL
MIN
SEND LEVEL
First set sound with
LOOP bypassed. Then
set SEND & OUTPUT
to 50% for unity gain.
With LOOP IN, adjust
SEND to match FX.
Use OUTPUT for
RETURN level and
live volume control.
SEND RETURN LOOP
IN
HARD BYPASS
M
LONE STAR
TUBE LOCATIONS
1 x 5U4 4 x 6L6
1 x 5U4 4 x 6L6

PAGE 13
REAR PANEL: (Continued)
REVERB:
The
LONE STAR
incorporates a stunning analog Reverb circuit that is fi tted with individual Channel Mix controls and a
unique Reverb Voicing feature that offers a choice between two classic reverb sounds.
REVERB BRIGHT
produces a vintage guitar amp style brighter sound fi lled with canyons of
harmonics and the classic spring resonance, while
REV WARM
features a smoother, warmer
character often associated with large plate studio reverbs. You will quickly see why we think
the
LONE STAR
Reverb is possibly our best reverb to date.
Enjoy!
CHANNEL & SOLO: External Switch Ports:
These two 1/4” jacks provide an interface for remote control of the Channel Select
function as well as activation of the SOLO control. These jacks may be connected to an external control unit that stores a grounding
logic switch function under a midi program number, thereby removing the need to use the included
LONE STAR
Footswitch in larger stage rigs.
The
EXTERNAL SWITCH
jacks respond to any tip-to-ground latching type logic for their triggering. This
type of switching logic can be found on most midi master control switching units on the market.
BIAS SELECT:
This mini toggle allows for proper biasing when swapping to EL34 type power tubes for a brighter harmonic laden
response. It selects a different set of bias resistors and insures that these extremely different power tubes will sound better and work
much more reliably. The adjacent LED indicator alerts you that the bias has been set to accommodate the EL34’s.
NOTE:
It is extremely important that the
BIAS SWITCH
setting match the type of
tubes in use. Failure to comply will result in damage to your amplifi er. Always check
the
BIAS SWITCH
whenever swapping tubes!
If you are doing mostly cleaner rhythm style playing and go for a warmer fatter
lead solo voice as well as need a variety of sounds, you will likely prefer the stock
compliment of 6L6’s. They clip in a warmer way and during our R & D process we
found them to produce the best blend of frequencies with the least compromise
stylistically.
There are however, some wonderful clipped power sounds available for both chording and single note work with the right set of EL34’s
fi tted. Afi cionados of this sound have long recognized that nothing produces the layers of soft, lined-up harmonics like these British
style bottles and when dialed right, the
LONE STAR
takes on a whole new personality. So when you have fi nished exploring this side
of the Atlantic for vintage magic, defi nitely take a jump across the pond and check out some of the amazing sounds that are made
possible with the inclusion of the
BIAS SELECT
feature and these opposite sounding tube types.
We recommend the 6L6 for reliability:
In our many tests and continued use of the currently available EL34 type power tubes on the
market today, we regret to say that they do not appear to be as rugged in construction or as reliable as their 6L6 counterparts. This
fact, along with their sonic narrowing of possible styles, is why the
LONE STAR
ships with 6L6 power tubes.
If you fi nd that your signature sound relies on using EL34 power tubes, then we strongly suggest keeping at least one spare set of
tubes and a bag of extra fuses with you at all times when performing in the event of a tube failure. A little preparation will save you a
lot of frustration should one of these less rugged tubes fail.
LOOP
IN
HARD BYPASS
OOGIE
B
MESA
LONE STAR
CH 2 REVERB CH 1
REVERB
BRIGHT
REV WARM
ALL - TUBE
AMPLIFIER
REVERB
BRIGHT
REV WARM
ALL - TUBE
AMPLIFIER
CHANNEL SOLO
EXT
SW
SLAVE
SPEAKERS
HAND BUILT IN PETALUMA CA.
8 OHM 4 OHM 4 OHM
BIAS SELECT
EL-34
WHEN
RED ON
EL-34
6L6
CAUTION: SWITCH MUST
MATCH TUBES IN USE

PAGE 14
BIAS SELECT: (Continued)
NOTE:
Using the AC POWER switch set to TWEED will reduce the strain on EL34 tubes (and 6L6 as well). If you prefer the sound of
this setting, you will reduce the likelihood of tube problems and greatly extend their toneful life, as they are basically coasting.
NOTE:
It is possible to run the smaller octal 6V6 power tubes for reduced power applications and a looser bubblier sound in the
TWEED AC POWER SETTING ONLY. Leave the
BIAS SELECT
switch set to 6L6 (switch down) and install four 6V6 power tubes. It
is advisable to use both Channels set to the 100 watt setting for reliability and proper impedance matching.
Do not run 6V6 in the normal POWER ON setting
as they cannot handle the higher AC voltage and could fail and damage internal
components! When using these tubes, move the 8 ohm speaker to the 4 ohm SPEAKER OUTPUT jack. This will reduce strain on the
tubes and produce the best sonic response.
SPEAKERS:
The
LONE STAR
provides one 8 ohm and two 4 ohm speaker outputs and this enables you to use many different
combinations of speaker setups. The 1x12 combo uses an 8 ohm speaker while the 2 x 12 combo uses two 16 ohm speakers wired
in parallel and this harness connects to the 8 ohm speaker output. You should experiment with different loading conditions as there
may be a certain impedance mismatch that produces a sound you may prefer to the correct load condi-
tion. This will not hurt the amplifi er, however mismatching in the higher direction will wear the power tubes
faster. You will fi nd sample speaker wiring diagrams later in this manual and when you get time it would
be a good idea to browse this section to understand more about different ways you can use your
LONE
STAR
with alternate speaker combinations. We build many different types of Extension Speaker Cabinets,
all with unique characteristics, as well as a line of matching Classic cabinets to enhance both the sound
and the appearance of your
LONE STAR.
SLAVE:
The
SLAVE
Output and its accompanying Level control provide an output for capturing the sound of both preamp and
power section. This feature may be used to drive additional slave power amplifi ers for big venue applications or to drive a string of
outboard processors when using the EFFECTS LOOP is not desirable. It is not a direct recording output as it derives its signal from
the speaker jacks and is much too strong a signal to connect to the input of a console. Also there is no roll off of high frequencies or
shaping, as the speaker does this, so the sound would be less than desirable for recording applications.
Should you need a direct recording sound, check out one of our Rectifi er Recording Preamp’s which are
designed specifi cally for this application and has the necessary circuitry to achieve this diffi cult task with
stunning results.
NOTE:
The signal from the
SLAVE
Output is powerful. Always start with the LEVEL control set to its
lowest position (7:00) when connecting to anything and bring the level up slowly to avoid damaging gear
(and ears) downstream of the
LONE STAR
NOTE:
Once a signal has been taken from the
SLAVE
Output, it can not be routed back into the amplifi er (INPUT or EFFECTS
LOOP RETURN). Doing so will produce a feedback loop resulting in a high pitched squeal much like holding a microphone up to a
monitor.
That covers the features, outputs and functions of your
LONE STAR
…now it’s up to your imagination as to how best to utilize all this
expressive power. Whichever way you take it, we wish you many years of elevated inspiration and hope you fi nd lasting satisfaction
and enjoyment from this hand-crafted musical instrument.
If you have any questions or concerns unanswered in this guide, please feel free to call our Customer Service department and ask
for a Product Specialist who will be glad to help you get the answers you need.
Cheers and Enjoy!
SLAVE
SPEAKERS
HAND BUILT IN PETALUMA CA.
8 OHM 4 OHM 4 OHM
SLAVE
SPEAKERS
HAND BUILT IN PETALUMA CA.
8 OHM 4 OHM 4 OHM
REAR PANEL: (Continued)

PAGE 15
REAR PANEL: (Continued)
REVERB REMOTE JACK:
The Reverb feature contains a Remote Switch jack that allows you to control the Reverb effect from
a separate footswitch. The 1/4” jack is located on the underside of the chassis just below where the SLAVE jack is located on the
extreme right side of the Back Panel.
Connecting any tip-to-ground, latching-type footswitch will allow you to toggle on and off the Reverb effect.
Use a shielded cable for this application. You should be able to fi nd this type of footswitch at most music
stores or, you can call our Customer Service department and order one for a nominal charge.
SLAVE
SPEAKERS
HAND BUILT IN PETALUMA CA.
8 OHM 4 OHM 4 OHM
REMOTE
FOOTSWITCH JACK
REST AREA

PAGE 16
INPUT
FT.SW
DRIVE
CH 1
FT SW
CH 2
THICK
THICKER
CLEAN
MAL
GAIN TREBLE MID BASS PRESENCE MASTER
100 W
50 W
100 W
50 W
OUTPUT LOOP ON SOLO
NOR
FACTORY SAMPLE SETTINGS
SAMPLE # 1
SAMPLE # 2
SAMPLE # 3
SAMPLE # 4
INPUT
FT.SW
GAIN TREBLE MID BASS PRESENCE MASTER
OUTPUT LOOP ON SOLO
DRIVE
CH 1
FT SW
CH 2
THICK
THICKER
CLEAN
MAL
100 W
50 W
100 W
50 W
NOR
INPUT
FT.SW
GAIN TREBLE MID BASS PRESENCE MASTER
OUTPUT LOOP ON SOLO
DRIVE
CH 1
FT SW
CH 2
THICK
THICKER
CLEAN
MAL
100 W
50 W
100 W
50 W
NOR
INPUT
FT.SW
OUTPUT LOOP ON SOLO
DRIVE
CH 1
FT SW
CH 2
THICK
THICKER
CLEAN
MAL
NOR
LONESTAR STATE TUBE RECTIFIER TRACKING
CLEAN CLONES DIODES
TWANG & BANGIN' TUBE RECTIFIER TRACKING
PURR & GRIND TUBE RECTIFIER TRACKING
GAIN TREBLE MID BASS PRESENCE MASTER
100 W
50 W
100 W
50 W
ON
STANDBY
POWER OFF
ONTWEED
ON
STANDBY
POWER OFF
ONTWEED
ON
STANDBY
POWER OFF
ONTWEED
ON
STANDBY
POWER OFF
ONTWEED
ON