Quest Engineering QA 4004, Руководство пользователя

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CONNECTIONS
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 ampli fi er is
approaching clipping.
6. PROTECT The protect LED indicates that
one of the various ampli fi er protection circuits
has been activated.*If LED remains on
please return ampli
fi er to a certi fi ed 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.
10. MODE This switches ampli fi er operational
mode from Stereo/Parallel Mono or Bridge
Mono. Input is across channel A. Minimum
speaker impedance is 8
Ω in bridge mode.
Please refer to page 7 of this manual for
correct wiring instructions.
A W L A YS SWITCH
OFF AMPLIFIER BEFORE OPERATING
BRIDGE SWITCH.
11. LIMITER Switches between off and on.
12. GAIN Input switch to calibrate mixer line level
to ampli fi er 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 ampli fi er.
16. MAINS INPUT Main power input IEC.
SWITCH OFF AMPLIFIER BEFORE OPERATING
BRIDGE SWITCH
’
(
)
*
+
,
OUTPUT ASSIGNMENT
PIN 1+ :
PIN 1- :
SIGNAL
GROUND
LINK A
LINK B
INPUT A
INPUT B
Push To Reset
~220
240V 10A 50/60Hz
OUTPUT A
OUTPUT B
BRIDGE
PIN1:
PIN2:
PIN3: SIGNAL GND
SIGNAL +
SIGNAL -
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
OFF 80Hz 110Hz
LOW PASS -A
OFF 35Hz 80Hz
HIGH PASS -A
26dB 32dB 1.4V
GAIN
STEREO PARALLEL BRIDGE
MODE
OFF 35Hz 80Hz
HIGH PASS -B
OFF 80Hz 110Hz
LOW PASS -B
ON OFF
LIMITER
LIFT GROUND
GROUND
DESIGNED BY QUEST ENGINEERING,AUSTRALIA
N2388
MODEL:
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Lk Lm Lo Lp
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QA SERIES
User Manual
QA Series
Power Amplifiers
User Manual
5