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MEASUREMENT SPECIFICATIONS: Force & Eliminator power amplifiers
printed board assembly names and their corresponding EDP-No.:
Force
: 84177
Eliminator : 84178
printed board assembly
Main PCB
Supply PCB
Input PCB
LED PCB
measuring condition; if not otherwise specified:
- tolerance of measured values:
- measuring frequency:
- stated levels refer to:
- level controls set to their clockwise limits
- pin assignment of the XLR-type connectors:
- source resistance for the induction via the XLR-type connector:
- the AMPLIFIER PCB printed board assembly is provided with service connectors
CNS1
PIN
assignment
1
2
BIAS +A
3
BIAS -A
4
FAN Voltage
5
6
BIAS +B
7
BIAS -B
8
Temp Heatsink
1.
Operation voltage:
2.
Deviation limit of the operation voltage:
3.
Power consumption (both channels driven) f = 1 kHz
idling power consumption
nominal power consumption (RL=4Ω)
standard power consumption (RL=4Ω)
maximum power consumption (RL=4Ω)
power consumption at 1/8 of the maximum output power
4. Adjustments
4.1 IDLING CURRENT ADJUSTMENT
Connect the DC-volt meter at the BIAS measuring points (see service connector) and adjust the idling current
via the trim potentiometer VR101/VR301 (on the main PCB printed board assembly). Adjust both channels of
the power amplifier A&B to a value of U(DC) = 7.5 mV. Adjusting the idling current setting has to be
PIN
-Vcc
1
2
3
4
+Vcc
5
6
7
8
CNS2
assignment
LIM A Switch
-15V
LIM B Switch
+15V
AGND
Speaker Out A
Relais/Protect
Speaker Out B
1
index
1
4
2
3
∆X = ±1.5 dB
f = 1 kHz
U = 775 mV (0 dBu)
PIN 1: ground / shielding
PIN 2: + INPUT
PIN 3: - INPUT
R(Q) = 50 Ω
CNRC
PIN
assignment
1
LIM Out A
2
LIM Out B
3
Standby via RC
4
Standby LED
5
6
7
8
U(B) = 120 V, 50 Hz ... 60 Hz
-30 % ... +10 %
Force
Eliminator
30-60W
40-80W
1400W
1900W
430W
600W
1650W
2100W
690W
870W
-Vss
+Vss
n.c.
n.c.
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