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Quad X-Amp
4.2 Interconnecting the System
Once you have selected your power amp and speakers interconnect is straightforward. Start
with all the gear turned off. Connect the outputs of the Quad X-Amp to the inputs of the power
amp. Although you can use either the 1/4" or the XLR connectors, for the lowest noise we
recommend using the balanced XLR connections both at the preamp output and at the power
amp input. This completes the preamp to power amp connections.
Next connect the power amp left and right outputs to the inputs of the left and right speakers.
Make sure you use heavy gauge wire for all your speaker connections, no lighter than 16 gauge.
Now you are ready to power up the system. Make sure the input level controls on the power
amp are set to minimum. Set the STEREO OUT and MONO OUT controls on the preamp to
minimum. Now power up the system. First turn on the preamp, and then the power amp.
QUAD X-AMP
CHANNEL EFFECTS LOOPS
ON
CH 1
CH 2
OFF
POWER
FUSE
120V 0.5A
240V .25A
MADE IN THE
120-240 VAC
USA
50-60 Hz
FET 1000 POWER AMP
4.3 Balancing the System Level Controls
With this many level controls it's easy to get the system messed up. The best approach is to start
with the power amp input level controls at maximum. Then set each of the channel volume
controls at "2". Finally raise the STEREO OUT control for the volume you want. If you want a
low volume level for practicing then you might back the power amp input level controls down to
half. Setting the power amp input level controls less than half is not advised as you risk
overdriving the output of the preamp before reaching full power.
Using the
MIDI
MASTER EFFECTS LOOPS
IN
0
1
MIDI CHANNEL
CH 3
CH 4
EXT. REVERB
SW
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
1
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
2
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
3
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
4
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
SND
POWERED MIDI IN
(MONO)
THRU
FOOTSWITCH
PIN 6=GND
RTN
LEFT
RIGHT
FS-77
PIN 7=+15VDC
CAUTION— TO PREVENT ELECTRICAL SHOCK DO NOT DEFEAT THE SAFETY GROUND ON THE POWER CORD. DO
NOT REMOVE COVER. NO USER-SERVICEABLE PARTS INSIDE. WARNING - TO PREVENT FIRE OR SHOCK HAZARD
DO NOT EXPOSE TO RAIN OR MOISTURE. DO NOT INSTALL A WRONG FUSE VALUE.
1155 Industrial Ave., Escondido, CA, 92029
INPUT
INPUT
SPK
OUTPUT
OUTPUT
2 COND SPEAKER CABLE
A Typical Quad X-Amp Hookup
Quad X-Amp
PRE AMP OUT
MONO
LIFT
MASTER
SND
INPUT
GND
LEFT
RIGHT
(MONO)
PHONES
LEFT
RIGHT
FRONT INPUT
DEFEATS
RTN
BAL.
REAR INPUT
Quad X-Amp
2 COND SHIELDED CABLE
SPK
V212 SPEAKERS
4-2
Section 4
Preamp
Power Amp
Speakers
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