Audio Transformer - 100W


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The TR-91 is a 100W transformer for speaker signals. The unit takes one 4Ω/8Ω channel from a speaker output of a power amplifier, transforms it to 70/100V and distributes it to an array of loudspeakers.

Features & Benefits

  • Bandwidth - 18kHz (-3dB).
  • Passive Device - No power required.
  • Desktop Size - Compact size. 2 units can be rack mounted side-by-side in a 1U rack space with an optional RK-1 rack adapter.
  • Max. Power - 100 watts.

Product Use Diagram

Product Specifications

Inputs1 low-impedance (4Ω/8Ω) speaker input on a terminal block connector
Output1 high-impedance speaker on a terminal block connector
Max Power100W
Voltage Gain7.4dB/10.5dB (70V/100V)
Operating Temperature0° to +40°C (32° to 104°F)
Storage Temperature-40° to +70°C (-40° to 158°F)
Product Dimensions W, D, H8.45" x 6.42" x 1.72" (21.46cm x 16.30cm x 4.36cm)
Product Weight3.5 lbs (1.6kg)