Quest Engineering QA 1004 User Manual

INSTALLATION
OUTPUT ASSIGNMENT
PIN 1 + :
PIN 1 - :
SIGN AL
GROU ND
LIN K A
LIN K B
INP UT A
IN
PUT B
Pus h To Reset
~
220 240 V 10A 5 0/60 Hz
OUT PUT A
OUT PUT B
BR
IDG E
PIN 1:
PIN 2:
PIN 3:
SIG
NAL
GND
SIG NAL
+
SIG NAL
-
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
OFF 80Hz 110Hz
LOW PASS -A
OFF 35H z 80Hz
HIGH PASS -A
26dB
32dB1.4V
GAIN
STEREO PARALLEL BRIDGE
MODE
STEREO
MO DE
OFF 35H z 80Hz
HIGH PASS -B
OFF 80Hz 1 10Hz
LOW PASS -B
ON OFF
LIMIT ER
LIFT GROUN D
GROUND
DESIG NED BY Q UEST ENG INEERIN G,AUST RALIA
MODEL:
Stereo Operation
System configuration diagrams
each other. The A channel handles the positive voltage
swing and the B channel becomes the negative, thus
doubling the output voltage swing. Via the “bridge
output” speaker connector, the speaker is now
connected across the two channels.
Power is proportional to the square of the voltage
swing, so four times the output power is possible. The
reality is that this would exceed the capability of the
output stage but a considerable increase in output will
result all the same.
C
aution : In this mode output voltages are high
enough to constitute a shock hazard.
Wiring will need to conform to CLASS 1 wiring
standards. Check your local electrical codes for the
appropriate electrical standards.
Output is via the middle Speakon connector. The
output signal is across pins number 1+,1-.
ALWAYS SWITCH OFF AMPLIFIER BEFORE
OPERATING BRIDGE SWITCH
The minimum load impedance in bridge mono
mode is 8Ω
2+
2-
1+
1-
3. SPEAKON CONNECTOR WIRING
3. Speakon input and output connector wiring.
QA SERIES
User Manual
User Manual
QA Series
Power Amplifiers
9

Quest Engineering QA 1004 Specifications

General

Brand	Quest Engineering
Model	QA 1004
Category	Amplifier
Language	English