Warwick Stereo Amplifier Quadruplet User Manual

OFFICIAL WARWICK  
AMP OWNER MANUAL  
ENGLISH  
QUADRUPLET  
 
Congratulations on the purchase of the new Warwick Pre Amplifier. Please read through these instruc-  
tions before connecting and operating the device. If you keep to the guidelines set out in this manual,  
you will soon be able to appreciate the quality of this new Warwick amplifier. Please keep this instruc-  
tion booklet handy in case you need to consult it again. Please send the PASSPORT to the address indi-  
cated therein.  
RECOMMENDATIONS  
The following recommendations are designed to ensure that the device always functions reliably:  
Never open the casing! To do so would expose you to the risk of an electric shock. Should repairs prove necessary, leave  
them to qualified service personnel.  
Avoid dust and high moisture levels, direct sunlight and extremely high or low temperature.  
Safeguard the device from excessive vibration. Always place the unit on a stable and horizontal surface.  
Avoid leaving the unit near radiators or other objects producing heat.  
• Internal components should only be adjusted or cleaned by qualified service technicians. Ensure no object or liquid  
penetrates the device through its cooling vents.  
When replacing a fuse make sure you fit in one of identical value!  
Have the device examined by a qualified service technician in the following cases:  
• the mains lead or mains switch have been damaged,  
objects or liquids have penetrated the device,  
• it has been exposed to excessive moisture,  
malfunctions or abnormal operating conditions have occurred,  
• the device has been dropped or the casing damaged.  
HINTS  
- This apparatus shall not be exposed dripping or splashing and that no objects filled with liquids, such as vases, shall  
be placed on the apparatus.  
- This apparatus should be connected to a MAINS socket outlet with a protective earthing connection.  
- Mains plug or appliance connector shall be used as the disconnect device, so mains plug or appliance connector should  
always remain readily operable.  
- If the apparatus shows any malfunction, immediately disconnect the main power cord from the mains socket.  
- Do only operate effects pedals in-between the instrument and the amplifier, as these devices are not designed for the  
supplied load of an effects loop.  
- Remove the plug whenever changing a fuse.  
- Only ever replace a fuse with another of the same type. Never bridge defective fuses.  
- Make sure the top and bottom of the device are properly ventilated and that the vents are not blocked.  
- Do not subject the device to excessive vibration or hard jolts as these could damage the device.  
- Don't undertake repairs yourself.  
- Only allow the case to be opened by qualified personnel. (Remove the plug).  
- Repairs should only be undertaken by qualified personnel.  
SHOULD YOU FIND YOURSELF ONE DAY WONDERING: "WHY IS THERE NO SOUND COMING OUT?"  
please check:  
- all stub cables,  
- all connections of these cables  
and proceed anew by following the guidelines of the chapter GETTING STARTED. Possibly the problem reveals to be an  
operational error.  
3
 
FRONT PANEL CONTROLS  
INPUT  
Socket for the connection of a bass  
BASS  
Rotary control to Cut or Boost low frequencies  
MID 1  
Rotary control to Cut or Boost low-mid frequencies  
SHIFT 1  
Switch + LED to set the operating frequency of MID 1  
MID 2  
Rotary control to Cut or Boost high-mid frequencies  
SHIFT 2  
Switch + LED to set the operating frequency of MID 2  
TREBLE  
Rotary control to Cut or Boost high frequencies  
LOW BOOST  
HIGH BOOST  
QUADRUMATRIX  
Switch + LED to Boost low frequencies  
Switch + LED to Boost high frequencies  
Rotary switch to alter the basic character of the Quadruplet. Also alters the operating frequen-  
cies of the tone controls. (For frequency diagrams see below) Q1 and Q2 are pure preamp  
signals. With Q3 and Q4, the valve(tube)-based power amplifier (EL84 and output transfor-  
mer) is included in the signal path. This gives you the sounds of a full-valve(tube) amplifier,  
even when you are using a transistorbased power amplifier.  
CRUNCH  
Amplifies the signal at the input to the preamp whilst simultaneously attenuating the signal at the  
output. This allows you to apply valve overdrive to compress or distort the signal from your bass  
Rotary control to determine the overall volume.  
Switch + LED mutes all the outputs of the Quadruplet except the PHONES socket and simul-  
taneously activa tes the TUNER OUT socket (Rear Panel). When the MUTE switch is depres-  
sed, the LED shines red. In an operation ready state, the LED shines green. In case of sig  
nal flow at the power section (Input or Effects Return), there might appear a popping  
noise when MUTE is pressed. To avoid this, mute your strings or have effects like  
delays muted when pressing the MUTE button.  
OUTPUT  
MUTE  
PHONES  
POWER  
Headphone socket (min 200).  
On/Off switch for the Mains Power.  
REAR PANEL  
MAINS IN AC  
GROUND LIFT  
Terminal with integrated fuse compartment for connection to the mains power supply  
Switch to separate the grounding conductor from the audio signal ground. When several  
devices are grounded to the same point and interconnected with shielded cables, a ground  
loop hum can result. If this happens, depress the GROUND LIFT switch to eliminate the hum.  
When this switch is depressed, the signal at the DI OUT socket is the pure bass signal (PRE).  
Otherwise it is the signal after the tone controls and any connected effects devices have  
done their work (POST)  
DI PRE/POST  
DI OUT LEFT + RIGHT  
LINE LEVEL  
Balanced outputs for the connection to a mixing desk (PA or Studio).  
When this switch is depressed, the output of the OUTPUT LEFT and RIGHT sockets is at Line  
Level (0dB). Otherwise it is at Instrument Level (+6dB)  
OUTPUT LEFT + RIGHT  
Outputs for connection to a power stage or amplifier (see above)  
EFF. SEND & EFF. RETURN L + R Sockets to implement the effects loop. Connect the input of the effects device to the SEND  
socket and its outputs to the RETURN L + R sockets  
TUNER OUT  
Socket for a tuning device. The pure bass signal is available at this socket when the Preamp  
is switched MUTE  
4
 
POWERING UP  
1. Make sure that the device is plugged in to the mains and that any external (effects) devices are correctly connected and  
operation-ready.  
2. Connect your bass to the QUADRUPLET'S INPUT using a shielded line cable.  
3. Turn on the power using the POWER switch.  
4. At the conclusion of the valve(tube) warm-up phase turn the MUTE switch off  
5. Use the OUTPUT controls to set the desired volume level.  
6. Adjust the controls to obtain the desired sound. To get to know the fundamental sounds of the QUADRUPLET, it is advi-  
sable to begin by setting all the tone controls to 12 o'clock, before using the QUADRUMATIX switch to adjust each of  
the four fundamental sounds in turn.  
7. Set the correct levels of the power or bass amplifier using the OUTPUT control and the Input controls of the power  
amplifier (or Gain control of the bass amp). It is advisable to begin by turning the OUTPUT control all the way to the  
right before adjusting the Input control(s) of the power amplifier/bass amp. Once you have done this, you can reduce  
the volume to the desired level by turning the OUTPUT control as far as necessary to the left again. This avoids the risk  
that you might later overload the power amplifier by turning the OUTPUT control too far to the right.  
Please note that...  
- the tolerances of the counter-rotating potentiometers of the CRUNCH control can result in trivial level variations at the  
DI OUT socket.  
- when the unit is connected to a power amplifier, the LINE LEVEL switch on the rear panel should be depressed, but not  
when the unit is connected between a bass and a bass amplifier. When the unit is operating at Instrument level, avoid  
the use of over-long cables as these lead to signal loss (high ohm signal).  
QUADRUMATRIX  
Q 1  
Q 2  
5
 
TECHNICAL DATA  
Preamp CH 1  
Poweramp  
all tubes  
only on dummy load  
CH 1 Equalizer  
bass, mid 1 (1+shift), mid 2 (2+shift), treble,  
low boost and high boost switches  
Headphone  
Direct Out  
min. 200 Ohms  
0 dB  
Effect Loops  
send -10 dBu  
return - 10 dBu  
Switches  
DI pre/post, line / instrument level  
4.2 kg  
Weight (kg)  
Dimensions (mm)  
19" / 485 x 45 x 280  
6
 
CIRCUIT DIAGRAM  
7
 
Headquarters:  
Branch China:  
Branch UK:  
Warwick GmbH&Co.Music Equipment KG • Gewerbegebiet Wohlhausen • 08258 Markneukirchen/Germany • E-Mail: info@warwick.de  
Warwick Music Equipment (Shanghai) Ltd., Co.• Shanghai Waigaoqiao Free Trade Zone • Shanghai 200131/P.R.China E-Mail: info@warwick.cn  
Warwick Music Equipment Trading (Manchester UK) Ltd. • 75 Bridge Street • Manchester M3 2RH / Great Britain • E-Mail: info@warwickbass.co.uk  
Branch Switzerland: Warwick Music Equipment Trading (Zurich) GmbH • Kriesbachstrasse 30 • 8600 Dübendorf / Switzerland • E-Mail: info@warwick.ch  
Branch CZ:  
Warwick Music Equipment Trading (Praha CZ) s.r.o. • Spálená 23/93 • 11000 Praha 1 / Czech Republik • E-Mail: info@warwick.cz  
Visit us on the World Wide Web: http://www.warwick.de  
 

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