Powered with main power IC TDA1554, this circuit works up to 22W. A few externel components required to support the main component. Heatsink on the power IC is a must.
Components:
R1__________39K 1/4 Watt Resistor C1,C2_______10uf 25V Electrolytic Capacitor C3__________100uf 25V Electrolytic Capacitor C4__________47uf 25V Electrolytic Capacitor C5__________0.1uf 25V Ceramic Capacitor C6__________2200uf 25V Electrolytic Capacitor U1__________TDA1554 Two Channel Audio Amp Chip MISC________Heatsink For U1, Binding Posts (For Output), RCA Jacks (For Input)
The works best with 4 ohm speakers, but 8 ohm units will do. This circuit dissipates roughly 28 watts of heat, so a good heatsink is necessary. The chip should run cool enough to touch with the proper heatsink installed.
Operated at 12 Volts and at about 5 Amps at full volume. Lower volumes use less current, and therefore produce less heat. Printed circuit board is preferred, but universal solder or perf board will do. Keep lead length short.
