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POWER AMPLIFIER DPA 4120 / DPA 4140 OWNER'S MANUAL
400 WATTS POWER AMPLIFIER
PROTECT
STANDBY
TEST
DPA 4140
GROUND
FAULT
CLIP
0dB
-13dB
READY
Performance Features
Power amplifier with 200 W or 400 W output power according to the IEC 283-3 standard within a
19“ - cabinet (3 HU) providing the following functions:
x supported are 115/230V AC mains as well as 24V DC emergency power source
x power amplifiers DPA 4120 providing 200 W or DPA 4140 providing 400 W output power, idling and short-circuit
protection
x output transformer for balanced, floating 100 V speaker networks of optionally 70 V, 50 V or
4 ohms for low-impedance operation
x optional input modules:
standard operation INPUT MODULE with level control, electronically balanced input and MONITOR output with
optional transformer or
REMOTE MODULE for controlling and monitoring the PROMATRIX system, electronic level controls,
electronically balanced input and MONITOR output with optional transformer
x integrated stand-by power supply
x mains POWER ON/OFF switch
x ground lift switch
x remotely controllable mains and battery operation with initial current inrush limiter
x power-on switching noise suppression
x status-LED indicators for operation (READY), STANDBY, thermal overload (PROTECT) and
occurrence of GROUND FAULT conditions at the power output
x fault message according to the IEC 849 standard
x TEST button to switch between system and average operation, respectively a RESET button to restart after the
occurrence of ground fault conditions
x LED level meter instrument with a display range of -13 dB to 0 dB and CLIP
x integrated relays for single call and obligatory reception
x active, temperature controlled ventilation
x pilot tone and ground fault surveillance module according to the DIN/VDE 0800 standard (optional)
The extension-kit NRS 90208 (input transformer) has been integrated in the input module NRS 90222
starting with the serial number 10461 and in the input module NRS 90225 starting with the serial number
12339 and higher.
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