TDA7294 There are two different subwoober bass amphitheater circuits prepared with an integrated amplifier . In the circuit with 100 watts, 1 TDA7294 is simpler than the other circuit used.
TDA7294 100W design bass filter circuit For 80-150Hz adjustable subwoofer filter circuit TL072 opamp used supply is provided with zener regulation via main power supply. TDA7294 200W TL074 and TL062 opamps for filter used 2X30V AC transformer for 2x24V AC 8-ohm speaker for 4-ohm speaker
TDA7294 SUBWOOFER AMPLIFIER SCHEMES