MCM Electronics

Two Channel Transformer 8 Ohm Inputs 70V OutputsMCM Part #: 555-22015  |  JBL Commercial Part #: CST-2120

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Transformer Kit

The rack-mountable JBL Commercial CST-2120 transformer module provides impedance and voltage matching from the CSA-2120 amplifier (with 4 and 8 ohms outputs) to drive 70V and 100V distributed speakers systems. This unit allows the CSA-2120 amplifier without direct 70V or 100V output capability to drive distributed speaker systems designed to operate at those voltages.

Product Description


  • Provides two channels of impedance matching and voltage matching for Constant Voltage operation.
  • Provides 70V and 100V output when used with CSA-2120 amplifiers
  • Allows CSA-2120 amplifiers to be easily integrated into distributed systems
  • Detachable Euroblock input and output connectors

Max Input Power 120W/Ch
Max Input Voltage 32Vrms
Insertion Loss Less than 1dB
Frequency Response +/-1 dB @ 70Hz - 15kHz
Dimensions 8.2" x 1.7" x 7" (209 mm x 44 mm x 178 mm)

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Package Specifications & Dimensions
Weight:12 lbs.
RoHS Comp:No
Warranty:365 days
Need to Return?
Length:12 in.
Width:11 in.
Height:5 in.
Shipping Information
Extra Shipping Charge:No
Drop Ship:No
Catalog Pages
PDF Reference

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Mfr. Info

JBL Commercial Logo
Mfr. Name:JBL Commercial
Mfr. Part Number:CST-2120