| Electronics > Projects, Designs, and Technical Stuff |
| A variable stereo blend circuit? |
| (1/1) |
| cvanc:
Hi all- I have an interesting problem with recent changes to my home system. Some recordings actually seem too stereo. I think a variable stereo separation control would be very useful. I would like a continuously variable knob that goes between full stereo & full mono. This control was common on old preamps, FWIW. A good example is the Apt Holman which is highly regarded; photo attached. I'd like to build one passively if possible. It'll probably be lossy but my preamp has a ton of output and can afford to spare some dBs. So... how do I make a passive variable separation control? |
| jiarui:
Just buy a small mixer. You only need two channels. Plug the left and right into the two channels. You can then just use the pan control to do what you need. |
| Zero999:
This is the simplest I could come up with. R2 will need to have an exponential curve, as it will have little effect towards the high end of its setting. A taper potentiometer could be used, but it'll have to be wired backwards. |
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