Adding Bass and Treble control to existing schematic

amplifieraudioportablestereo

I have a little project in mind that I want to try.
This picture below is a stereo amplifier circuit. For more info about it, you can see this page. Stereo Amp

Stereo Amplifier

The circuit above only has Gain and Volume control, how do I add Bass and Treble control?
Where do I add them?
How's the circuit layout/schematic?

Thank you.

Best Answer

Here are two circuits you could use:

http://www.diyaudio.com/forums/parts/144872-help-understanding-tone-circuit.html

Whichever you choose, you will need two of them, one for left, and one for right. Connect the output of the tone control circuit above to the input of your amplifier circuit. Use dual pototentiometers so you can have one treble control, and one bass control, each of which will affect both left and right channels simultaneously.

Here are some other bass / treble circuits:

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