Edwards 1B3-125 Audio Power Amplifier

The 1B3125 Power Amplifier is rated at 125 Watts continuous (RMS) power and it contains circuitry for 24 Vdc backup. The Amplifier mounts in a standard 19 in (483mm) rack. Output Voltage may be 25 or 70 VRMS. Supply voltage is 120/240 V, 50/60 Hz, or optionally 24-28 Vdc. The Amplifier contains electronic protection safeguards against overloads or shorted output. A thermal overload protection circuit is also included that opens the primary power circuit if the unit overheats. Both protection circuits are self restoring. The system may incorporate a Standby Amplifier as a backup against any unit failure.