Quest Engineering QA 1004 User Manual page 5

LINK A
PIN1:
PIN2:
PIN3:
LINK B
1. ON/OFF Switch.
2. LEVEL Control of the input level of the
external signal in 3dB increments.
3. POWER Status available.
4. SIGNAL Signal status indicators: These LEDs
indicate signal presence for both the inputs of
channel A and B.
5. PEAK Status indicates when amplifier is
approaching clipping.
6. PROTECT The protect LED indicates that
one of the various amplifier protection circuits
has been activated.*If LED remains on
please return amplifier to a certified service
technician.
7. INPUTS Channel A/B balanced XLR inputs:
pin 1 ground, pin 2 + and pin 3 -
8. HIGH PASS FILTER Selectors for A & B.
9. LOW PASS FILTER Seclectors for A & B.
,
+
*
)
'
(
- . Lk Lm
OFF 35Hz 80Hz STEREO PARALLEL BRIDGE 1.4V 32dB 26dB
HIGH PASS -A MODE GAIN
OFF 80Hz 110Hz
LOW PASS -A
INPUT A
SIGNAL GND
SIGNAL +
MODEL:
SIGNAL -
HIGH PASS -B
OFF 35Hz 80Hz
LOW PASS -B LIMITER GROUND
OFF 80Hz 110Hz ON OFF LIFT GROUND
DESIGNED BY QUEST ENGINEERING,AUSTRALIA
INPUT B
/ Ll Ln
Lo Lp
CAUTION
OUTPUT A
RISK OF ELECTRIC SHOCK
DO NOT OPEN
OUTPUT ASSIGNMENT
BRIDGE PIN 1+ : SIGNAL
Push To Reset
PIN 1- : GROUND
OUTPUT B
~ 220 240V 10A 50/60Hz
Lq
10. MODE This switches amplifier operational
mode from Stereo/Parallel Mono or Bridge
Mono. Input is across channel A. Minimum
speaker impedance is 8Ω in bridge mode.
Please refer to page 7 of this manual for
correct wiring instructions.
OFF AMPLIFIER BEFORE OPERATING
BRIDGE SWITCH .
11. LIMITER Switches between off and on.
12. GAIN Input switch to calibrate mixer line level
to amplifier input sensitivity.
13. GROUND Seperates electrical earth from that
of chassis ground.
14. OUTPUTS Channel A/B and Bridge Outputs.
Speakon NL4 connectors output on pin1+
and 1-
15. RESET Push circuit breaker to reset amplifier.
16. MAINS INPUT Main power input IEC.
SWITCH OFF AMPLIFIER BEFORE OPERATING
BRIDGE SWITCH
QA SERIES
User Manual
A L W A YS SWITCH
QA Series User Manual
Power Amplifiers
5