Trending 4558 Ic Subwoofer Circuit Diagram - Hello sir for ic 4558 i am not getting any audio amplifier circuit diagram here or anywhere though i need a very simple one , please. Circuit diagram for the only bass used for subwoofer.we makes low pass filter for with 4558d ic. 4558 Ic Subwoofer Circuit Diagram / Above is the circuit diagram for this tda2030 based amplifier circuit.