DESCRIPTION

The DPAfour amplifiers are primarily designed for integration into Voice Alarm systems, but thanks to its flexibility, it can also be used for any Public Address or Commercial application.

DPAfour amplifiers are certified to the EN54-16 standard.

The DPAfour is a 2U high 19” rack mountable, 4-channels class-D power amplifiers, transformer isolated for 100 V, 70 V, 50 V and low-impedance distributed loudspeaker systems.

There are two models in the DPAfour range:

• DPAfour125: 4 x 125 Watt - Compliant to EN54-16 standard
• DPAfour250: 4 x 250 Watt - Compliant to EN54-16 standard

Each channel can be paralleled or bridged by combining 2 channels providing a single output with double power.

The DPAfour can be powered by either a 110/230 VAC mains supply or 24 VDC supply able to support a battery back-up system for use in the event of mains failure and emergency evacuation systems.

DPAfour amplifiers have short-to-ground, short-circuit, overload and temperature overheat protection including line-impedance surveillance with a maximum of 5% deviation using the DIVA8 or IDA8 systems for loudspeaker-line surveillance. They support both single spur and redundant loop (A/B) cabling.

FEATURES

• DPAfour125: 4 x 125 Watt class-D power amplifier. Can be bridged into 2 x 250 Watt - Compliant to EN54-16 standard
• DPAfour250: 4 x 250 Watt class-D power amplifier. Can be bridged into 2 x 500 Watt - Compliant to EN54-16 standard
• 4 audio outputs (100 V/70 V/50 V/4 Ohms selectable)
• Fault reporting outputs
• 4 audio input gain control
• Advanced audio processing for each amplifier channel using DIVA or IDA8 systems
• Supervision of the amplifiers through DIVA or IDA8 systems
• Back up amplifier switching through DIVA or IDA8 systems
• Loudspeaker line monitoring with DIVA or IDA8 systems
• Output bridging for higher power
  
  

SPECIFICATIONS

Electrical

• AC power input: 115 or 230 VAC +/- 15%, 50/60 Hz
• Power consumption (AC)**: idle* - 1/2 full power - Pmax
  • DPAfour125: 34 W - 340 W - 650 W
  • DPAfour250: 38 W - 660 W - 1300 W
  • ** (Total Mains-power consumption @ 230 VAC)
  • * (Alarm cycle + 10 V pilot-tone @ 24 VDC)
• DC power input: 19-30 VDC
• Power consumption***: standby - idle* - 1/2 full power - Pmax
  • DPAfour125: 0.7 W - 30 W - 305 W - 585 W
  • DPAfour250: 0.7 W - 34 W - 595 W - 1170 W
  • *** (Total DC-current @ 24  VDC)
  • * (Alarm cycle + 10 V pilot-tone @ 24 VDC)

Audio

• Line inputs: 4 (one per channel)
  • Connector: 3-pin phoenix
  • Frequency response: +/- 3 dB @ 50 Hz and 20k Hz
  • S/N: > 90 dB
  • THD: < 0.1% @ 1k Hz
  • Input sensitivity: 770 mV
  • Input impedance: 22k Ohms

Loudspeakers outputs

• DPAfour125
• Rated output power: 125 W
• Rated load resistance: 80 Ohms (100 V)

• DPAfour250
• Rated output power: 250 W
• Rated load resistance: 40 Ohms (100 V)

Environmental

• Operating temperature: -5° C to +55° C
• Storage temperature: -40° C to +70° C
• Relative humidity: 20% to 95%
• Air pressure: 600 to 1100 h PA

Mechanical

• Dimensions (W x H x D): 483 x 88 x 370 mm
• Weight:
• DPAfour125: 14 Kg
• DPAfour250: 18 Kg
• Mounting: 19'' 2U rack-mount
• Color:  RAL7016

APPLICATIONS

• Schools
• Stores
• Shopping malls
• Hotels
• Train stations
• Universities
• Industrial sites

Case studies

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