Two-Rock Vintage Deluxe User manual

Two-Rock
Vintage Deluxe
OWNER'S MANUAL

Dear Customer,
Thank you for your purchase of a Two-Rock!
As a discerning guitarist, you know the road to great tone begins with
great components.
Our Classic Design, carefully selected parts and hand-built approach
combine to make an extremely versatile instrument.
Please take the time to read this manual. We hope it will answer any
questions that you may have.
We extend a warm welcome to you as a member of a select group of
musicians who have chosen a Two-Rock amplifier.
Important Safety Instructions
1. Read these instructions
2. Keep these instructions
3. Heed all warnings
4. Follow all instructions
5. Do not use this apparatus near water
6. Clean only with dry cloth
7. Do not block any ventilation openings. Install in accordance with the manufacturer’s instructions
8. Do not install near any heat sources such as radiators, heat registers, plugs, and the point
where they exit from the apparatus
9. Protect the power cord from being walked on or pinched particularly at plugs and the point
where they exit from the apparatus
10. Only use attachments/accessories specified by the manufacturer
11. Unplug this apparatus during lightning storms or when unused for long periods of time
12. Refer all servicing to qualified service personnel. Servicing is required when the apparatus has
been damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled
or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture,
does not operate normally, or has been dropped
13. CAUTION: To disconnect the unit completely from the MAINS, unplug the unit. Turning the
power switch off does not disconnect the unit completely from the MAINS.

Front Panel Functions
INPUT - High impedance input to the amplifier. Plug in your instrument here.
TEXTURE Switch - Changes the character of the amp from a softer scooped feel in the down
position to a faster attack with an increased amount of harmonic content and texture when
engaged (switch in up position).
GAIN - Adjusts the overall gain of the amplifier. Start with this control in the 12 o’clock position
then adjust to taste. This control determines the initial character of your tone, from cleaner/brighter
tones at low settings to fatter/warmer tones at higher settings. As you turn this control up it also
introduces more gain and bass into the signal path, and reduces the amount of available clean
headroom especially when the master volume is set higher.
BRIGHT Switch - Boosts the high frequency response. This is most effective when the
Gain control is set at 12 o’clock or lower. This is great for adding sparkle to clean tones. The effect
is less dramatic as the Gain control is adjusted past the 12 o’clock position.
TREBLE - Adjusts the high frequency response. At lower settings of this control the tone will be
warmer and smoother. As you turn this control up the highs become more prominent and
aggressive adding gain to the signal as well. This control is very interactive with the Bright switch
and Middle control. In the full counter-clockwise position, high frequencies are bypassed to
ground. In the full clockwise position, high frequencies are allowed to pass to the next gain stage.
MIDDLE - Adjusts the midrange response. At low settings of this control the tone will be “scooped”
of midrange response, emphasizing the highs and lows. As this control is turned up, the midrange
frequencies are increased. This creates the “body” of your guitar’s tone and is very critical to both
the tonality, feel and overall response of the amplifier. Higher settings of this control also help your
tone to cut through the mix in both a live band situation as well as when playing the amp outdoors.
In the full clockwise position, mid-range frequencies are allowed to pass to the next gain stage.
BASS - Adjusts the bass response. In the full counter-clockwise position, low frequencies are cut
and the response of the treble and mid-range controls is greatly reduced. As this control is turned
up, the bass frequencies are increased and allowed to pass to the next gain stage.

TREMOLO –This amp features tube driven bias tremolo which modulates the bias voltage of the
amp’s power tubes. This produces a very musical effect that does not get in the way of your
playing even at higher settings of intensity. This feature is foot switchable.
SPEED –Adjusts the speed of the bias tremolo.
INTENSITY –Adjusts the effect and depth of the bias tremolo.
TONE STACK Switch –When engaged, the Tone Stack Adjust knob on the rear panel becomes
active and disengages the front panel Treble/Middle/Bass controls. This feature is foot switchable.
REVERB RETURN - The reverb return control mixes the reverb effect signal with the dry signal. At
full counterclockwise rotation, the reverb effect is defeated. By using the return control in
conjunction with the reverb send control, a wide range of natural reverb effects can be produced.
MASTER - Adjusts the overall output level of the amplifier. At lower settings on this control the
amp will be much cleaner sounding as well as lower in volume. As this control is turned up the
power section of the amp begins to work harder which increases sustain, fullness, and touch
dynamics as well as raising the volume of the amplifier. At higher settings on this control the power
section will be pushed into natural overdrive especially if the Gain control is set higher.
PRESENCE - Adjusts the contour of the high-frequency response. Turning this control up
gradually increases the intensity of the upper frequencies. This is a subtle control which can be
used to either emphasize sparkle and brightness when needed or smooth out your overall tone by
turning the control down.
STANDBY - This switch should be in the down/STANDBY position before you place the Power
switch to the up/ON position. After 20 seconds or more, place the Standby switch in the “up”
position to play the amplifier. When you are taking a break from playing the amp you can leave the
amp “powered up” and simply switch to the “stand-by” position to mute the output of the amplifier
and prolong power tube life.
INDICATOR LAMP - This lamp will illuminate when the rear panel power switch is in the “up”
position, indicating the unit is receiving A/C power.
NOTE: All switches are ON when in the “up” position

Rear Panel Functions
A/C Input - Connects the amplifier to A/C power via the power cable supplied. Unless otherwise
specified, your amplifier is designed to operate on 120 volts A/C, 60 cycles.
FUSE - See Fuse Chart
POWER SWITCH -Turns power on.
HI/LOW SWITCH –40/20w 4 x 6V6 Power Configuration: HI mode is full power - 40 watts, LOW
mode is half power - 20 watts. The 40/20w proprietary output transformer, when switching from full
power to half power, will automatically compensate for impedance differences so no impedance
adjustment is necessary.
35w 2 x 6L6 Power Configuration: HI mode is fixed bias, LOW mode is cathode bias. When
switched to the LOW position, the touch sensitivity and feel are enhanced and the amount of available clean
headroom decreases without lowering the perceived volume significantly.
SPEAKER OUTPUTS - There are 3 speaker output jacks; 4, 8, and 16 ohms.
Be sure to match the impedance of your speaker cabinet with the impedance (output) of the
amplifier.
NEVER OPERATE YOUR AMPLIFIER WITHOUT A PROPER SPEAKER LOAD CONNECTED
EFFECTS LOOP –The effects loop on this amplifier is a passive type of loop, see FAQ on
two-rock.com
EFFECTS SEND - Use this jack to send the amplifier’s signal to outboard effects.
EFFECTS RETURN - Use this jack to connect the output of your effects to the amplifier.
TONE STACK ADJUST - When the Tone Stack switch is engaged via the footswitch or front
panel toggle switch, the Treble/Middle/Bass controls on the front on the amplifier are bypassed
and this single tone control becomes active. This “alternate” tone stack offers the player a different
feel and tonal character with a bit more gain.
REVERB SEND - This reverb drive control determines the amount of signal applied to the reverb
tank. Low settings will create a very open, small room reverb effect with a short decay time.
Advancing the control clockwise increases the signal applied to the driver, and a very saturated
effect with a sharp attack and a long decay can be obtained. This control works in conjunction with
the front panel Reverb Return control.

FOOTSWITCH - The footswitch connects here. The Tone Stack and Tremolo functions can be
activated via the footswitch. The respective front panel switches (TONE STACK, TREMOLO) must
be in the “off,” or down position, to enable the footswitch functions.
FOOTSWITCH –includes ¼” to ¼” TRS cable
TONE STACK - Blue LED
TREMOLO - Red LED
S/N - Your serial number is located here. We strongly suggest that you record this number and
have it handy in case you need service, or in the event that your amp is lost, stolen, or damaged.
FUSE CHART
All Fuses are 3AG Type 250 Volt, SLO-BLO
Export 100V Domestic 120V Export 220V, 230V, 240V
2A - 35 Watt 2x6L6 2A - 35 Watt 2x6L6 1A - 35 Watt 2x6L6
2.5A 40/20w 4x6V6 2.5A 40/20w 4x6V6 1.6A 40/20w 4x6V6

TUBE COMPLEMENT
V1- Preamp 12AX7
V2- Reverb Drive 12AT7
V3- Reverb Mix 12AX7
V4- Reverb Send, Reverb Stage 1 12AX7
V5- Tremolo Oscillator 12AX7
V6- Phase Splitter 12AX7
(35 Watt) V7-V8 –6L6GC Output, V9 –5AR4 Rectifier
(40 Watt) V7-V10 –6V6 Output
Each fine production tube is tested and matched to our exacting specifications. External bias adjustment and test
points are located on the chassis near the output tube sockets. A digital voltmeter and small screwdriver are required
for bias adjustment.
BIAS PROCEDURE:
1. Make sure the speaker is connected properly, then power up the amplifier.
2. Set the power mode switch to Hi or Full up position
3. DO NOT apply any signal to the input during the biasing procedure!
4. Insert the volt meter’s positive probe into the bias test point socket
5. Connect the volt meter’s negative probe to chassis ground
6. Switch the amp out of standby and allow a few seconds for the circuit to stabilize.
7. Set the voltmeter to millivolt scale (or lowest volt scale 60 millivolts =.060 volts.)
8. Observe the display on the meter to see the current bias setting.
A setting of .030 to .032 volts is normal for 35 watt amplifiers with (2) 6L6’s.
A setting of .022 to .024 volts is normal for 40 watt amplifiers with (4) 6V6’s.
If an adjustment is needed, use a small
flat blade screwdriver inserted into the
bias adjust pot and adjust by turning the
bias screw SLOWLY in very small
increments until the desired setting is
achieved on the meter. Then wait a few
moments for the bias to stabilize and re-
adjust if necessary. You may need to
repeat this procedure a couple of times.
FRONT
BACK
V1
V10 V5 V2
V4
V3
V6
V7V8V9
TEST POINT
BIAS POT

We know your new Two-Rock amplifier will provide many hours of enjoyment and
inspiration in the years to come. This manual is a resource for some of your
questions. Please contact us with any other questions or comments that you may
have. We look forward to hearing from you!
PHONE: [phone]-TONE (8663) (M-F 9am-5pm PST)
ADDRESS: Two-Rock Amplifiers, LLC
619 Martin Avenue, Suite 5
Rohnert Park, CA 94928
CONTACT: [email protected]
WEB: www.two-rock.com

Two-Rock Amplifiers, LLC
619 MARTIN AVENUE, SUITE 5
ROHNERT PARK, CA 94928
707-584-8663
www.two-rock.com
SERIAL NUMBER: _____________________________