This is the circuit diagram of a fully transistorized subwoofer amplifier that can produce full output 100W.There seven including four in the output stage. Transistors Q1 and Q2 form the pre-amplifier. The transistors Q4 to Q7 as the output stage. Since no integrated circuits used in the circuit is very robust and can be easily mounted on a general purpose PCB.Notes.
- The circuit can be powered from a +35V/-35V, 5A dual power supply.
- Use a 100W, 12 inch sub woofer at the output.
- All electrolytic capacitors must be rated 100V.
- The transistor Q4 to Q7 must be fitted with heat sinks.
