Brunetti XL extra lead User manual

USER'S MANUAL
Before using, please take few minutets to get familiar with your Amplifier and carefully read
the advices, explanations hereby reported.
All our units are hand made. For this reason you could find design or sound differences. All
this as guarantee that you bought a true hand-made product.
XL
extra lead
TUBE POWER HEAD

XL
extra lead
TUBE POWER HEAD
Congratulations! You have chosen the highest quality product now available in the
market.
The new XL head is characterized by the best tube amplification matched with high
quality manufacturing and beautiful design. It is carefully hand-made assembled
following the best Italian handcraft tradition.
Every component has been carefully tested for a professional use.
Before playing, we advise you to get familiar with your XL and carefully read the
advice and explanations hereby reported. In this way you will be able to know your
XL better finding out its characteristics and appreciating its high quality and
versatility.
When you first switch your XL on, we advise you to play without any effect
connected so that you get to know the sound characteristics of the different controls.
Do not connect preamplified effects (footswitches, multieffect preamps,
boost/overdrive footswitches , preamps, etc.) to the send/return XL loop in order to
avoid unpleasant sound changes.
Read and carefully follow all the instructions in order to avoid damages to things or
people.
All our units are hand made. For this reason you could find little design or sound differences.
All this as guarantee that you bought a true hand made product.
SPECIFICATIONS
Output Power: 60W (120W option*) rms (4-8-16Ohm)
80W (180W) max impact power
Channels: 3 (Clean, Boost, XL)
SEND output: -10dB/5KOhm
RETURN input: Switchable / 50KOhm
PRE OUT output: 1 Vrms / 5KOhm
Power Supply 110/220V ± 10% - 180/250 VA max
Tubes: 5 x 12AX7A - 2 x EL34** (4 x EL34 - 120W)
Dimensions: 730 x 235 x 300 mm.
Weight: 13 Kg.
A1 U rack 19» unit can be contained in the space below the head
•Attention! Your XL can be modified by Brunetti company in order to reach 120W.
•** It’s possible to mount different kind of tubes (5881-6550C) under request.
Please call Brunetti company in Italy to have more information.

USER’S MANUAL AND CHARACTERISTICS
CHANNELS: CLEAN/BOOST/XL
CONTROLS FUNCTION ADVISED VALUE
CLEAN: •GAIN amplification 5/6
BRIGHT more brilliant and less harmonic sound as you prefer
•BASS 100Hz Bass as you prefer
•MID 500Hz Mid as you prefer
•HI 2KHz High as you prefer
•MASTER preamplified signal 6/8
BOOST: •GAIN amplification 7
NORMAL normal sound as you prefer
FAT fatter sound as you prefer
EXTRA more agressive and fatter sound as you prefer
•BASS 120Hz Bass as you prefer
•MID 600Hz Mid as you prefer
ADD adds presence as you prefer
0 normal as you prefer
CUT eliminates presence as you prefer
•HI 3KHz High as you prefer
•MASTER preamplified signal 5/7
XL: •GAIN amplification 4/8
•BASS/MID/HI same controls of BOOST as you prefer
•MASTER preamplified signal 5/7
P.S.: The MASTER knobs control the preout level which is placed on the rear panel.
OTHER CONTROLS
VOLUME: sound volume of the power amplification
PRESENCE: it controls the power amplifier brightness
MAIN: general switch on (red light on)
STD-BY: it supplies high voltage to the circuit
SPEAKER IMPEDANCE: it selects the speakers impedance (Remember: with two 16Ohm
speakers you have to select 8Ohm; with two 8Ohm speakers you have to select
4Ohm)
SPEAKER OUT: two outputs in parallel for the speaker/s.
REMOTE*: it controls the channel switch through an external switcher.
FOOT SW: supplied footswitch for the channel switch
TUBE MIXER CIRCUIT
SIGNAL LVL: it controls the not processed signal which goes to the power amplifier. P.S.: if this
knob is placed on «0» position, the amplifier doesn’t receive the preamp sound.
EFFECT LVL: it controls the processed signal.
(AMP LVL): this input can also be used as a power amp input using an external
preamp (AMP LVL).
SEND: signal to be processed.
RETURN: signal input from the effect.
PRE OUT: line preamplified signal output for an external amplifier.
* When passing from using the external switcher to the footswitch and viceversa, switch the head off
first.

PREAMP TUBES
The preamp tubes are used to preamplifier the signal. They usually last the entire life of the amplifier.
The possible problems of these kind of tubes are: microphonics and noise.
Microphonics
The microphonics is the ability of a tube to reproduce external vibrations further the signal.
This phenomenon can be much more evident in high gain stage like the distortion channels.
Lightly tapping on the glass side of the preamp tubes, while the head is on, you' ll hear a stroke through the
speaker, this is normal don' t worry.
But if you hear hi frequencies (ringing or squealing) and in some case a distorted sound, it means that the tube is
microphonics.
You will note that the first tube is more subject to reproduce this stroke more than the others, because it' s at
the begin of the preamplification chain.
Noise
Tube has an own intrinsic floor noise that comes from its work and construction.
During tube life this noise may increase creating a sort of a ringing or squealing.
In these two cases, you have to find the defective tube and repleace it with a new one.
The preamp tube doesn't need to be selected, (normally this control has been made by the constructor), but be sure
to replace with good quality tubes.
We suggest thay you use tubes of same brand and model.
POWER TUBES
Power tubes are the last amplification stage before the out trasformer and speaker out, and they can get exhausted.
Normally a power tube working in A/B class lasts 800 - 1000 hours. It depends also on the volume used.
In an amplifier with same power, in A class, the tube lasts 600 - 800 hours. In this class work tubes are more stressed.
When replace power tubes
You can recognize an exhausted tube because there's a loss of power and volume. Sound has not the same impact,
in particular on low frequencies.
Main faults on this kind of tube are :
- short inside the tube. In this case normally the HT fuse will blow.
- tube light off. It's easy to recognize this problem tube because you can't see any light inside the tube.
- tube become glowing. In this case there's an increase of noise (hum) and sound will be distorted.
In all the above cases tubes can' t be fixed, and have to be replaced.
If the problem tube has worked more that 1 year, we suggest that you replace all power tubes, this to guarantee the
best performance of your amp.
If the problem tube has less than 1 year you can replace only that one.
Warning!!
You have to mount only selected and matched tubes, with the same characteristics of the tube supplied on your
aplifier. See the ''Matching Reference'' label on the tube.
If you mount tubes with different ''Matching Reference'' is necessary to adjust the Bias, to let the amp work properly.
GENERAL INFORMATION

MODULATION EFFECTS
The main characteristic of the modulation effect (see example) is to add and/or lay other wave forms to the signal.
This kind of effect should be used in the loop effect of your amp, that is between the Premaplifier and the Power
amp.
SYNTHESIS EFFECTS
The main characteristic of the synsthesis effect (see example) is to modify the signal wave form. (i.e. the
distortion effects).
This kind of effect should be used between the guitar and the input of your amp, in a standard connection chain.
SERIAL LOOP
In a Serial Loop all the output signal coming from the Preamp passes throught the effect. In this case on your
effect unit it is necessary to adjust the balance between the DIRECT (DRY) and the EFFECT( WET).
PARALLEL LOOP
In a Parallel Loop only a part of the direct sound passes throught the loop effect, without going out from the
Send. This part of the signal will be mixed with the signal that comes from the Return.
In this connection the quality of the effect is not so important as it is in the Serial Loop connection, because the
Direct will be kept by the loop (see drawing).
PRE POWER
EFFECT
SEND RETURN
MIX
DIRECT
EFFECT
SERIAL LOOP
IN OUT
IN
GUITAR OUT
PRE
EFFECT
SEND RETURN
MIX
DIRECT
EFFECT
PARALLEL LOOP
IN OUT
DIRECT MIX
EFFECT=100%
DIRECT=0%
IN
GUITAR OUT
To obtain a good sound
we suggest that you set on zero ''0''
the DIRECT (DRY) on the effect.
POWER
Input Signal Output Signal
OUT
IN
SYNTHESIS
Input Signal Output Signal
MODULATION
EFX OUT
IN EFX
GENERAL INFORMATION

MIDI CONNECTIONS
GENERAL INFORMATION

HEAD
Speaker
HEAD
Speaker 8
HEAD
Speaker 4
16
HEAD
Speaker 8
HEAD
Speaker 16
HEAD
Speaker 8
2 CABINET 4x12'' MONO
16Ω
Impedance
selector Impedance
selector Impedance
selector
Impadance
selector
Impedance
selector
Impedance
selector
16Ω16Ω16Ω8Ω8Ω
CABINET 1x12'' CABINET 1x12'' CABINET 1x12'' CABINET 1x12'' CABINET 1x12''
8 Ω
CABINET 2x12'' MONO
16Ω
CABINET 4x12'' MONO
CABINET CONNECTIONS
GENERAL INFORMATION

CLEANING
Before any kind of cleaning operation, disconnect the appliance from the electric supply.
- Do not throw water jets directly on the appliance.
- Do not use water steams to clean the appliance.
- Do not use solvents to clean the appliance.
Surface Cleaning: system suggested
Satin Aluminium: Soft cloth + product for metal parts
Stainless steel : Paper + product for chrome parts
WARNINGS
− The manufacturer declines all responsibility for any kind of damage to persons, things and/or
animals resulting from a wrong use of the appliance.
− The appliance' s conformity is proved by CE symbol on the rear side.
− The manufacturer reserves the right to make any useful and essential change to the products
without compromise the main safety and working features.
− Do not use the appliance barefoot.
− Do not touch the appliance with wet or moist hands or feet.
− Do not allow children or incompetents to use the appliance.
− Do not leave inflammable materials near to the appliance.
− Do not pull up the appliance by control knobs.
− Read carefully, compile and deliver the warranty attached to the appliance.
− The appliance' s repair may be done during the warranty period only by us, in our laboratory, or by
authorized staff, in conformity to the national previsions in force.
− Control periodically all cables supplied with the appliance, if they result damaged, you have to replace
them immediately with another one with the same characteristics.
− In case of damage contact the shop where you bought the appliance.
− The appliance must be earthed in conformity to the national previsions in force.
For any further information and/or support contact us.
Brunetti Marco & C. S.a.s
Via Deí Bonomini, 25/27
I - 41100 MODENA - ITALIA
Phone number : +39 059 / 243404
http://www.brunetti.it
e-mail : [email protected] commercial info
e-mail : [email protected] technical info
GENERAL INFORMATION