This is my other project using IC LM3886. A complete LM3886 amplifier with tone control(Bell Bifet HK201), subwoofer filter (Bell BE-SW2075), and speaker protector(Bell HD 40A). Except PCB for ic LM3886, all using the available cheap kits I mention above.
Standard component in the tone controller gain more attention, I replace it with better components. In addition, all coupling capacitors replaced using MKP capacitors.
Here are some photographs…
Tone Control Upgrade
Testing and Checking