4 channel, Transformer Box

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The Crown VT4500 is a 4-channel rack-mountable transformer designed for VA Series amplifiers to provide impedance matching between am- plifier outputs and “constant voltage” loudspeakers. This unit allows VA amplifiers without direct 70 Vrms or 100 Vrms output to drive distributed speaker systems designed to operate at those voltages.

Recommended for: Installed Sound.


  • Designed for VA Series amplifiers
  • Provides four channels of impedance matching for constant voltage operation
  • Provides 70Vrms and 100Vrms output when used only with the VA Series of amplifier
  • Allows VA amplifiers without direct constant voltage capability to be easily integrated into distributed systems
  • Compact 2U rackmount chassis; Barrier strip input and output connectors

Recommended for: Installed Sound



Output Connectors Barrier strips accept up to 12 AWG wire
Input Connectors Barrier strips accept up to 12 AWG wire
Frequency Response 100 Hz - 15 kHz, ±1.0 dB
Insertion Loss ≤1.0 dB (at 70 VAC)
Max Input Level 64 Vrms
Dimensions (H x W x D) 88.2 x 482 x 235 mm
Net Weight 12.6 kg
Gross Weight 13.7 Kg