Brunetti PIRATA 141 User manual

CONTENTS Pag.
-CONGRATULATION FOR YOUR CHOICE 3
- TECHNICAL SPECIFICATIONS 3
- GENERAL VIEW 4
- TUBES LAY OUT 5
- FRONT PANEL
- Stand-by & Power 6
- Master 1 6
- Master 2 6
- Valvemix 6
- Impact 6
- Rhythm. The Clean channel 7
- Solo. The Distortion channel 7
- How to use the Gain control of the Solo channel 8
- REAR PANEL
- Remote 9
- Loop 10
- Foot pedal effects 10
- Rack effects 10
- Output 11
- How to use the Pre output 11
- How to use the Return 11
- SUGGESTED SETTINGS
- Rhythm settings 12
- Solo settings 13
- EXAMPLE 1 14
- EXAMPLE 2 15
- GENERAL INFORMATION
- Preamp tubes 16
- Power tubes 16
- Synthesis effects 17
- Modulation effects 17
- Serial loop 17
- Parallel loop 17
- Cabinet connections 18
- Cleaning 19
- Warnings 19

Pirata 141 is a two channel Hi Gain Head with double power tubes amp with an agressive and
powerful sound without comparison!
You can have two version with two different power tubes:
- 2x EL34 and 2x 6L6 (50W / 75W). Called VALVEMIX.
- 4x 6L6 (130W). Called IMPACT.
Versatile and compact, it is suitable from Rock to the extreme Metal !
version
- Output power : 50 W ( EL34 or 6L6) / 75 W ( EL34 + 6L6)
- HT Fuse : SB500mA (Slow Blow)
- Tubes : 5x 12AX7 / 2x EL34 / 2x 6L6
version
- Output power : 130 W
- HT Fuse : SB630mA (Slow Blow)
- Tubes : 5x 12AX7 / 4x 6L6
- Power supply : See label on the rear panel
- Power supply Fuse : See label on the rear panel
- Dimensions: 645 x 210 x 235 mm
- Weight : 16 kg
This innovative concept offers a double tube power amp (6L6 and EL34).
A pot on the front panel allows to pass from EL34 to 6L6, (in real time, without noise or sound
breaks) with the possibility to mix these two tube types. Absolutely new!!
EQUIPMENT
- Power cable
- Foot pedal with cable
- Instruction manual
- Warranty Card
- Cover
ELECTRIC CONNECTION
-Electric safety and correct work are guarantee when the unit is correctly earthed.
-Ensure that voltage value printed on the rear panel correspond to available current.
CONGRATULATION FOR YOUR CHOICE!
TECHNICAL SPECIFICATIONS
3

GENERAL VIEW
FRONT
PANEL
REAR
PANEL
4

EL34 EL346L66L6
12AX7 12AX7 12AX7 12AX7 12AX7
6L66L6
12AX7 12AX7 12AX7 12AX7 12AX7
6L66L6
RHYTHM
SOLO
SOLOSOLOLOOPDRIVER
Version
Version
130W
RHYTHM
SOLO
SOLOSOLOLOOPDRIVER
WARNING!!
Don't reverse the valve position
between 6L6 ad EL34. This operation
cause serious damages to the head.
TUBES LAY OUT
5

On version with 2x 6L6 + 2x EL34 you will find the
control that allows you to choose,
mix or add the EL34 with 6L6 characteristics,
increasing in this way the setting possibilities.
You can set this particular control while you are
playing, without any sort of noise.
STD-BY & POWER
WARNING!!
First of all connect the load (speaker) to the speaker out.Playing without speaker is very
dangerous for the power tubes and out trasformer. This operation doesn't create
damages if the amplifier is in Stand-by or if the general volume is set on zero ''0'' position.
On. On front panel of the head there are two switches to turn on and off the amp. You may proceed
to turn on the head with the following instructions :
- Pull up the POWER switch (A). The blue lamp (B) will light on.
All electric supplies will be served except the high tension on tubes.
- After at list 30 seconds you may pull up the STD-BY switch (C), so that tubes will have the high
tension (HT). This part of the circuitry is protected by a fuse indicated with ''HT Fuse'' on the rear
panel, near the power supply socket.
Off. To turn off the head pull down before the STD-BY switch (C) and after the POWER switch (A).
You don't have to wait a specific time between these two operations.
Master 2 is the second main volume control, it is independent by Master 1.
Setting at higher level than Master 1 may be used for a guitar solo, or particular guitar parts that have
to be highlighted.
The great advantage of this control is that it can do a part of the work of your volume pedal.
Master 1 is the main volume control.
Illuminated led,
Master 2
selected
CB
APower fuse and
spare fuse.
HT FUSE Line voltage value,
power fuse value,
serial number and
production date,
are printed on
the grey label.
Power
socket
FRONT PANEL
On version with 4x 6L6, instead of Valvemix there's
the control. It allows you to obtain a
smooth sound (SMOOTH) or a sharp sound (SHARP).
Rotating through all the different shades of these two
tones .
6

CLEAN CHANNEL
The clean channel, RHYTHM, has a great touch response, an incredible dynamic, with a very versatile sound.
The tone controls are very efficient and selective in their own work frequencies.
With the control you can get different tones possibility:
only EL34 for a sound thick and wrapping.
only 6L6 to obtain a bright and definite clean.
Setting on EL34+6L6 the sound becomes compact and compressed, and pass from 50 to 75 W, combining
together both tube characteristics.
Controls PRE Preamp volume
BASS / MID / TREBLE Tone controls
BRIGHT Brilliant control
DISTORTION CHANNEL
is an Hi Gain channel with a great dynamic.
The Gain level may be set from a good crunch to a distortion level, with an impact similar to a crash wave.
If your guitar is fitted with an humbucker pickup on bridge or neck, the result on the channel will be
optimum.
But anyway you 'll discover that also a single coil pickup can play how you have never imaged!
With the control you can achieve all the timbre benefits of the two kinds of tubes.
EL34 to obtain a round and compact sound, recommended with neck pickup too .
6L6 to obtain a sharp but not ''fuzzy'' sound, recommended with bridge pickup.
Using the control set on EL34+6L6, will come out all the head's character, with a punch without
comparison!
You can get an incisive and powerful sound in any codition:
open chords with 6 ot 7 strings; from open tunes to one or two tones detuned; from palm muting till your
favourite solo. You will be satisfy to have chosen the guitar as your instrument.
Controls GAIN Gain control
BASS / MID / TREBLE Tone controls
VOLUME Volume control
PRESENCE Presence control
On version with 4x 6L6, instead of Valvemix there's
the control. It allows you to obtain a
smooth sound (SMOOTH) or a sharp sound (SHARP).
Rotating through all the different shades of these two
tones .
FRONT PANEL
7

EXAMPLE A
This setting allows you to have clean and definite
bass and middle-bass, while the treble and
middle-treble will be sharp and aggressive.
STANDARD ROCK
DISTORTION
EXAMPLE B
This setting allows you to have a great level of distortion
with a powerful and well balanced tone.
FULL HEAVY
DISTORTION
EXAMPLE C
This setting allows you to have the maximum level of
distortion and a saturated, sharp and compressed tone,
with all the frequency range of your guitar..
HOW TO USE THE CONTROL OF THE CHANNEL
LIGHT
DISTORTION
8
FRONT PANEL
Usually to achieve certain kind of sounds you have to work on the tone controls.
Due to its circuit design, , allows you to obtain, simply with the control, different range of
distortion with a lot of tone combinations.
This is possible thanks to the three working stages of the together with the right adjustment of the
equalization controls.

Channel switching, Loop effect,and Master 2 can be controled by :
Warning!
Using the foot pedal or the remote switches,
you have to set these three switches
(indacated by the finger) on ON position,
otherwise the Remote controls don't
work.
- three jack input, used as remote switch.
- foot pedal supplied with the amplifier.
- three switches on the rear panel (manual mode).
With an external switcher you can
control the Pirata 141 and other device
using a midi foot switch.
GGG
A/B 1 2 3 4 5
MIDI OUT
Midi Footswitch
MIDI THRU
Effects
MIDI IN
MIDI IN
Switcher
GGG
Warning!
FOOT socket is for the supplied footpedal
only. Using other footswitch
(i.e. midi footswitch)
the Remote system can be damaged.
REAR PANEL
9

On the rear panel there is a Loop section that allows you to mix the original sound of the head with
your effect, following your personal taste.
The Send has been studied to serve stomp efx and rack efx, to obtain always the maximum sound result.
MIX control settings :
- no effect. Set MIX control in ONLY DIRECT position (0% of effect).
- parallel loop. Set MIX control in the middle of the range (i.e. 30-50-70%).
- serial loop. Set MIX control on ALL EFFECT position (100%).
To omit effects set the MIX control on ONLY DIRECT position.
If you want to exclude the Loop section (including all the relative head internal circuitry) you can simply do it
pushing the LOOP switch on the foot pedal or thru the remote control on the rear panel.
The yellow led on foot pedal and on the front panel shows you the loop state.
The Send level depends by the volume control level of the two channels.
Illuminated led,
effect loop inserted
FOOT PEDAL EFFECTS (Stomp efx)
To achieve the maximum sound result we suggest that you insert in the loop only modulation effects (i.e. chorus,
flanger, delay, reverb etc.)
Set the MIX control on ALL EFFECT position (serial mode), in this way the signal will be completely processed by
the effect.
On the pedal modulation effects usually there's a Level control, adjust it as per the effect quantity you desire.
RACK EFFECTS (Rack efx)
We suggest that you set on zero "0" the Direct (Dry) on your effect. In this way you can control the mix between
the original sound of the head and your effect (Wet) by the MIX control, following your personale taste.
REAR PANEL
10

On the rear panel there are the following outputs :
- 2 speaker out to connect one or two cabinets
- impedance selector to adjust the impedance between the head and the cabinet
- output signal from the preamp (PRE).
HOW TO USE THE PRE OUTPUT
In the normal use of the head the PRE output can be used to connect an external power amp and its cabinet.
These two systems A and B (see example) can be used at the same time.
16
8
4
CABINET 2x12'' MONO
In POWER AMP
Out
16Ω
CABINET 4x12'' MONO
Select on the power amp
the same impedance value
of the cabinet
(in this example 16 ohm).
A system B system
HOW TO USE THE RETURN
If you want to use an external preamp you can connect it in the return of the .
With this connection and setting the MIX control on ALL EFFECT position, you exclude the internal preamp, the
volume and the tone controls on both channels. In this way you control only the Power Amp: Master 1 and 2,
or functions.
16Ω
CABINET 4x12'' MONO
16
In
PRE AMP
Out
Guitar
8Ω
REAR PANEL
11

1
2
3
4
5
6
SETTINGS
12

7
8
9
10
11
12
SETTINGS
13

8
PEDAL 2
OUT
IN
PEDAL 3
OUT
IN
PEDAL 4
OUT
IN
Guitar
INOUT
VOLUME
PEDAL
Warning !!
When you use the foot pedal or the
remote switches, these three switches
must be kept on ON position as shown.
IN
OUT
WHA WHA
PEDAL
Power cable
Foot pedal
cable
Modulation effects
Synthesis effects
PEDAL 1
IN
OUT Where not specified
all the jack cables are mono.
The image here reported rappresents
only a connection example.
It's not binding.
EXAMPLE 1
14

16
Guitar
16Ω
CABINET 4x12'' MONO
EFX
Volume IN
Volume Out IN OUT
WETDRY
0% 100%
Power cable
Foot pedal
cable
The volume IN has be set to avoid to saturate the effect,
this adjustment depends to the preamp volume setting.
The volume OUT has be set to obtain
an effect quantity well balanced.
Where not specified
all the jack cables are mono.
The image here reported rappresents
only a connection example.
It's not binding.
Warning !!
When you use the foot pedal or the
remote switches, these three switches
must be kept on ON position as shown.
EXAMPLE 2
15

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
16

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
17

CABINET CONNECTIONS
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
GENERAL INFORMATION
18

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 De' 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
19