Mixing 4 audio channels to 3?
On Wed, 26 Oct 2011 11:18:39 -0700, DaveC wrote:
For that particular circuit with that chip, the caps are necessary
because those inputs are not at ground potential. If you are feeding
normal hi fi unit inputs the caps aren't needed. Resistor values
around 5 to 10 k would be what you need.
And the value for the potentiometer?
That depends entirely on the input impedance of the subwoofer. You
could try a 100k pot and connect it as a normal volume control - one
end to the incoming signal, the other end to ground and the slider to
the subwoofer.
d
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