Trending Subwoofer 4558 Ic Bass Treble Circuit Diagram / This is the circuit only for bass booster using 4558 ic, by using this bass circuit for woofer the audio is bass boosted. Welcome to the ct sounds subwoofer wiring wizard. Subwoofer 4558 Ic Bass Treble Circuit Diagram / Chahe wo 4watt ka ho ya 40w ya 100w, 400w kisi me bhi.