I have made the following power amplifier circuit.It can produces 60W rms at 50V supply on a 8 Ohm load. The transistors--2N3055 serves the function of driving the speaker here. The capacitor C1 controls low frequencies and capacitor C2 controls high frequencies.The circuit ia basically a class B amplifier.
I have made it successfully and sound quality is good but lots of noise is coming when no input is given.When I connect a source and mute it some radio channel’s voice is coming. Doesn't 2N3055 suitable here ? I can't really find any problems! ! ! If you need more details about hardware please refer to the datasheet of 2N3055: http://www.kynix.com/uploadfiles/pdf86758/2N3055.pdf .
What can I do? Thanks in advance.