JBL CST-2120 Transformer ModuleThe 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.
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