DPA4140

1x400w Single Channel Power Amplifier

The DPA4140 amplifier has been specially designed to ensure durable performance and reliable operation of sound reinforcement systems with several independent loudspeaker lines. The unit is best suited for paging and pre-recorded message installations, alert systems, and for general music applications in industrial enterprises, offices, multifunction halls, sport arenas, schools, churches, hotels, hospitals, super markets, cruise ships, and similar venues.


The DPA4140 amplifier can either be operated on the AC mains or connected to an external 24 V battery power source. Switching to battery operation is accomplished via an internal relay.

The DPA4140 provides the following remote monitoring functions when used with the remote modules in a ProAnnounce system:

Setting input levels Reading level values of the audio level controls. Setting level offsets via virtual controllers. Mute function (via level control). Remote control power operation ON/OFF. Battery operation remote control ON/OFF. Monitoring and fault message transmission of thermal overload warnings on the mains transformer or power output stages. Monitoring of the functioning of the power outputstages via pilot tone signal. Ground fault detection for loudspeaker lines.

One input module is required for proper operation of the DPA4140.  Two different versions are available.  The NRS90222 is the remote control version which allows for full monitoring and control through the ProAnnounce Designer software.  The other is the NRS90225 which provides only the XLR input connector and has no remote control functions available.

 

Specifications

Continuous rated power (1k Hz, THD 1%) 4Ω 400 Watts
Input Impedance (balanced) 10 kΩ
Input Sensitivity 775mV
Weight Net22.5 kg ( 49.6 lbs )
Dimensions (HxWxD)132 x 483 x 345 mm
(5.2" x 19.02" x 13.58")

Downloads

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Accessories

DPA4140 Input Modules
<div>The DPA4140 must be equipped with an input module for proper operation. One of two different versions are available. The NRS90222 is the remote control version which allows for full monitoring and control through the ProAnnounce Designer software. The other is the NRS90225 which provides only the XLR input connector and has no remote control functions available</div> <div> </div> <div>The NRS90222 remote input module provides the ability to remote control and monitor the operation of the DPA4140 power amplifier from the DPM4000 processor (for further details please refer to the ProAnnounce hardware Reference Guide handbook).</div> <div> </div> <div>The NRS90222 has the following features:</div> <div> </div> <div>• lockable XLR input connector</div> <div>• XLR output connector; to patch the input signal through</div> <div>• input level; can be set via a programmable audio level control</div> <div>• MUTE (via level control)</div> <div>• mains remote ON/OFF</div> <div>• battery remote ON/OFF</div> <div>• control of the D- and E-relays</div> <div>• surveillance and fault messaging via the DPM 4000 for the following conditions:</div> <div> - thermal overload of the mains transformer</div> <div> - thermal overload of the power amplification stage</div> <div> - ground fault (optional; only with installed NRS 90224)</div> <div> - pilot tone signal (optional; only with installed NRS 90224)</div> <div> - measurement of the output voltage / level</div> <div> - measurement of the output current</div> <div> - surveillance of the connected loads via current/voltage measurement</div> <div>• MONITOR output; electronically balanced</div> <div>• monitoring: input/output signals can be assigned to the monitor bus</div> <div>• input and/or output transformer for floating, balanced audio (optional)</div> • pilot tone signal ON/OFF (optional)