Installation Instruction VARIODYN
®
D1 System
FB 798663.GB0 / 05.19 67
7.4.5 Power Amplifier 4XD300 / 4XD500
The four-channel amplifier 4XD300/4XD500 was developed specifically for use in the VARIODYN
®
D1 voice alarm
system and has four independent individual amplifiers, each with 300 W/500 W output and galvanically-isolated
100 V direct outputs, symmetrical inputs, inrush current limiting and soft starter.
With an installation height of just two HUs, the amplifier is suitable for rack mounting and has 24 V emergency
power supply provided via an emergency power manager.
Fig. 58: Front view of power amplifier 4XD300
Fig. 59: Front view of power amplifier 4XD500
Additional information on LED indicators refer to operating instruction (Part No. 798662.GB0).
Fig. 60: Rear view of power amplifier 4XD300
230 V AC rated voltage via IEC power socket
Primary fuse F 10 A / 250 V
On / off switch
24 V DC emergency power supply
DIP switch
Plug connections to control unit (use system cable)
The SPK outputs are designed with touch-protected terminals.
Plug connection – AF input signal from the control unit
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