150W General-Purpose PA-Amp PUBLIC

150W General Purpose PA Amplifier

150-watt RMS general purpose PA amplifier. Uses two TDA7293V power-amplifier ICs with their output stages in parallel. Controls Include: Drive and Volume. No tone controls. No fuzz, distortion, or other effects. Intended for sound-reinforcement applications in the range from subwoofer to upper midrange. Suitable as a slave-amp for 6/7/8-string guitar and 4/5/6-string bass. [Not recommended for full-range or tweeter PA applications.] Frequency Range 26 Hz to 4 kHz with all controls at 50%, or 20 Hz to 8 kHz with all controls at 100%. Maximum Gain = +38 dBV @ 160 Hz with all controls at 50%, or +50 dBV with all controls at 100%. Power-supply not shown. Requires three DC supplies; one regulated dual-polarity +-15VDC @ >= 20mA for the op-amps, and two unregulated dual-polarity +-27VDC @ 2A for the power-amp ICs. And though simulator verified, treat the circuit as experimental. Breadboard test before soldering. Example Speakers: For PA applications, any 8-ohm subwoofer, woofer, or midrange driver rated 75W RMS or higher (2 required). For 4/5/6-string bass, any 8-ohm 10", 12", 15", or 18" subwoofer or woofer recommended for bass-guitar and rated 75W RMS or higher each (2 required). For 6/7/8-string guitar, any 8-ohm 10" or 12" guitar speaker rated 75W RMS or higher each (2 required). Example Online Speaker Source: https://www.parts-express.com