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AMPLIFIERS > DPAfour Class-D Amplifier

DPAfour 125

Product Number: DPAfour125


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. The DPAfour amplifiers are certified to the EN 54-16 standard.

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.


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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. The DPAfour amplifiers are certified to the EN 54-16 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 EN 54-16 standard
  • DPAfour250: 4 x 250 Watt – Compliant to EN 54-16 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
  • Quiescent current in sleep mode: 30 mA
  • Front panel indicators include : General Status (Power, Battery, Service) and General Fault, Detailed status (Signal, Clip, Fault and Ready)
  • 100 / 70 / 50 V & 4 ohms available via terminal block at the rear

Specifications

Mains power supply

  • Voltage 115 or 230 VAC ±15%, 50/60 Hz
  • Power consumption** standby – idle* – Pmax
    • DPA4250 1 W – 44 W – 1169 W
      **(Total Mains-power consumption @ 230 VAC)
      *(Alarm cycle + 10 V pilot-tone @ 24 VDC)

Battery power supply

  • Voltage 19-30 VDC
  • Power consumption*** standby – idle* – Imax
    • DPA4250 0.03 A – 1.65 A – 43.85 A
      ***(Total DC-current @ 24 VDC)
      *(Alarm cycle + 10 V pilot-tone @ 24 VDC)
  • Line inputs 4 x (One per channel)
  • Connector 3-pin phoenix
  • Frequency response +/-3 dB @ 50 Hz and 20 kHz
  • S/N > 90 dB
  • THD < 0,1% @ 1 kHz
  • Input sensitivity 770 mV
  • Input impedance 20 kOhm

Loudspeakers outputs

  • Rated load resistance 40 ohm (100 V)
  • Rated load capacitance 120 nF (100 V)

Rated output power

  • (per channel) 250 W (cont. at 40°C)
  • Two channels bridged 500 W (cont. at 40°C)
  • Frequency response 40 Hz to 20 kHz(-3 dB)
  • S/N >90 dB (no pilot tone)
  • Crosstalk <70 dB at nominal load for 1 kHz
  • Distortion <0,1% (@ 1 kHz) @ -10dB of rated outputpower

Mechanical

  • Dimensions (H x W X D) 19” rack use, with brackets 88,5 x 483 x 370 mm
  • Weight : DPA 4250 18 kg (40 lb)
  • Mounting 19”-rackmount
  • Colour RAL7016

Environmental

  • Operating temperature -5 ºC to +55 ºC (+23 ºF to +131 ºF)
  • Storage temperature -40 ºC to +70 ºC (-40 ºF to +158 ºF)
  • Relative humidity 15% to 90%
  • Air pressure 600 to 1100 h Pa.

Applications

  • Train stations
  • Stadiums
  • Congress centers
  • Exhibition grounds
  • Shopping malls
  • Airports
  • Subway stations
  • Industrials sites
  • Offices tower

Contact Us

ATEÏS Middle East – Dubai (HQ)

 

LIU-1 No.10 & 11 Dubai Silicon Oasis P.O. Box 293640 Dubai U.A.E
T: +971 (4) 3262730 F: +971 (4) 3262731
E: info@ateis.ae  –  Linkedin  –  Twitter – Youtube

 

ATEÏS Middle East – India

 

4th Floor, 411, V Times Square,  Sector 15, CBD Belapur,
Navi Mumbai – 400 614.
Tel:- +91 22 4968 7447