DPA 4140
 DPA 4140 - Call for pricing - 1x400w Power Amplifier
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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.
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.
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 output stages via pilot tone signal.
- Ground fault detection for loudspeaker lines.
Features
- Supported are 115/230V AC mains as well as 24V DC emergency power source
- Power amplifier DPA 4140 providing 400 W output power, idling and short-circuit protection
- 70V or 100V capability for constant voltage speaker lines
- Full remote control and monitoring functions available (when used with optional remote modules)
- Integrated standby power supply
- Mains POWER ON/OFF switch
- Ground lift switch
- Remote-Start function for mains and battery operation with inrush current limiter protection
- Power-on noise attenuation
- Status-LED indicators for operation (READY), STANDBY, thermal overload (PROTECT) and occurrence of GROUND FAULT conditions at the power output
- Fault message according to the IEC 849 standard
- TEST button to switch between system and average operation, respectively a RESET button to restart after the occurrence of ground fault conditions
- LED level meter instrument with a display range of -13 dB to 0 dB and CLIP
- Integrated relays for signal call and obligatory reception
- Active, temperature-controlled ventilation
- Pilot tone and ground fault surveillance module according to the DIN/VDE 0800 standard
Architectural and Engineering Specifications
The remote control amplifier unit shall provide the following remote monitoring functions:
Setting input levels, reading level values of the audio level controls, setting level offsets via virtual controllers, mute function (via level controls),
remote control power operation 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 output stages via pilot tone signal, and ground fault detection for loudspeaker lines.
The amplifier shall either be powered by AC mains or connected to an external 24V battery power source.
Switching to battery operation shall be accomplished via an internal relay.
The amplifier shall be 3RU in height and provide 1x200 or 1x400 watt operation depending on the model.
The output channel must be driven through on-board transformers.
The amplifier shall be the Dynacord ProAnnounce DPA4140.
| Specifications |
| Nominal Output Power with mains supply | 1 x 400 W |
| Mains Operation | 115 V / 230 V AC, ±10 % |
| Mains Frequency | 50—60 Hz |
| Security Class | I |
| Battery Operation | 24 V DC, -10/+30 % |
| Input Characteristics | Electronically balanced |
| Nominal Input Level | 775 mV = 0 dBu / 10 kΩ |
| Nominal Input Impedance | ≥ 10 kΩ |
| Power Output Characteristics | Balanced, floating |
| Nominal Output Voltage - AC supply | 100 V / 70 V / 50 V / 20 V |
| Nominal Output Voltage - battery supply @ 24 V DC | 79 V / 56 V / 40 V / 16 V |
| Nominal Load Impedance | 100 Ω (50 / 25 / 4 Ω) |
| Noise (A-weighted) | -56 dBu |
| THD @ rated output power | < 1% |
| Frequency Response | 60 Hz–20 kHz |
| Distortion-Limited Response - (PA NOMINAL -3dB, kS = 1%) | 60 Hz–5 kHz |
| Crosstalk @ 1 kHz | 80 dB |
| MONITOR Output Characteristics | Electronically balanced |
| MONITOR Nominal Output Voltage | 2 V = + 8.2 dBu |
| MONITOR Nominal Load Impedance | 600 Ω |
| MONITOR Frequency Response | 60 Hz–20 kHz |
| Operating Temperature Range | +5 °C to +40 °C |
| Dimensions (HxWxD) | 13.2 x 48.3 x 34.5 cm (5.2" x 19.0" x 13.6") |
| Weight | 22.5 kg (49.6 lbs) |
| Color | Anthracite |
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DPA 4140 Specifications (pdf)