I have built this audio amp circuit the second opamp on the right is a lm386 not the tL072 that it says but am having the following problems with the circuit:
1.Getting unwanted noise when the led sensitivity indicator lights.
2.How can i modify the circuit to reduce other unwanted noises for example if i replace the 9v battery with a 9v wallwart ?
3.How hard would it be to add a bass and treble control to this ?
4.What else can i do to improve the circuit in general ?
1.Getting unwanted noise when the led sensitivity indicator lights.
2.How can i modify the circuit to reduce other unwanted noises for example if i replace the 9v battery with a 9v wallwart ?
3.How hard would it be to add a bass and treble control to this ?
4.What else can i do to improve the circuit in general ?
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