Hello Mr. Rogers,
This is the classic way to do it:
Left in-----[R1]--+--[R2]--+--[R3]------+
| | +-----\ |
| +--|- \ |
[P1]<--+ | |Op-Amp |-+-- Out
| | | +|+ /
| GND | |+-----/
Right In ---[R4]--+--[R5]--+ |
GND
where R1=R2=R4=R5=10k, R3=30k, and P1=10k "W"-taper pot (a linear
taper is OK for testing).
Michael Rogers wrote:
>
> Can anybody show me a simple circuit to fade between two audio sources?
> I know how to make a simple mixer with an op amp and how to calculate
> the gain on each channel, but since I always want to fade out channel 1
> when I fade in channel 2 (and vice versa) I would like to be able to
> have both controls on one pot. Is there a more elegant way than using a
> dual-ganged pot?
>
> Thanks in advance.
>
> Michael Rogers
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| Richard Sulin
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Date: Thu, 3 Dec 1998 01:05:26 GMT
Original Subject: Re: Simple crossfader circuit?