The DPAfour is a 2U high 19” rack mountable, 4-channel class-D power amplifier, transformer isolated for 100 V, 70 V, 50 V and low-impedance distributed loudspeaker systems. Each amplifier can deliver up to 1000 Watt when used in bridged mode or in separate channels of 125 or 250 Watt. This amplifier has a dual voltage mains 110/230 VAC and a 24 VDC battery back-up input which allows it to be used in combination with a battery backup system for maximum availability and durability in an emergency evacuation system. There are 3 types of power amplifiers available in the DPA four range of products.

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• DPA four 125: 4 x 125 Watt class-D power amplifie It an be bridged into 2 x 250 W.

• DPA four 250: 4 x 250 Watt class-D power amplifier It can be bridged into 2 x 500 W.

• DPA single 1000: 1 x 1000 Watt class-D power amplifier.

• 2U high, 19-inch rack mountable.

• Quiescent curent in sleep mode: 30 mA.

• Front panel indicators include: General status: Power, Battery, Service and General Fault. Detailed status: Signal, Clip , Fault and Ready (Ready = out of sleep mode).

• 100 / 70 / 50 / 4 Ohm available via terminal blocks at the rear.

• Output channels can be linked into 2 x 250 W or 2 x 500 W by daisy-chaining 50 V tapping (input on parallel).

• Combines with the BECS150 charger and back-up supply.