RDL SF-PA100A Format-A to 100 W Mono Audio Amplifier (70 V or 100 V)

The SF-PA100A is an audio power amplifier that receives three audio channels on an RJ45 Format-A connector. A selector feeds Pair A, Pair B or Pair C audio to the amplifier that provides a 70 V or 100 V constant voltage amplified output. At the normal gain setting, the output provides 100 watts for an audio level of +22 dBu. The three Format-A pairs feed through to the LOOP OUT jack to feed additional amplifiers or other Format-A receivers. Input gain is set by the installer using a rear-panel single-turn potentiometer with an associated dual-LED VU meter calibrated to 10 dB below maximum power output. The SF-PA100A is equipped with an internal VCA for setting the amplifier output level. The REMOTE CONTROL RJ45 jack provides for the connection of an RDL D-RLC10KM type remote level control. It is also possible to use the RJ45 jack to connect an external 10 kΩ potentiometer or a 0 to 10 Vdc control voltage. VCA control insures long term noise-free level adjustment. A selectable audio com