Hi there,
I am making a stereo tube amp. I am using a 100K dual (ALPS, six legged) pot for volume.
Instead of having another power switch, I want use a rotary volume pot with built-in on/off. So basically, I need 100K dual on/off volume pot.
I can't find an unused dual one. All I find is mono (with three legs) Maybe I am looking at the wrong places. Is there any place that I can find good quality dual pot with on/off?
Thanks...
I am making a stereo tube amp. I am using a 100K dual (ALPS, six legged) pot for volume.
Instead of having another power switch, I want use a rotary volume pot with built-in on/off. So basically, I need 100K dual on/off volume pot.
I can't find an unused dual one. All I find is mono (with three legs) Maybe I am looking at the wrong places. Is there any place that I can find good quality dual pot with on/off?
Thanks...
As far as i now pots with power-switches has not been made in 20 years. If you find one then the chances of obtaining a spare is minimal.
You _might_ make one with a microswitch and a cam om the pot shaft, the cam
activating the switch at bottom level. But i admit it's flaky as best , better is
to use a separate power switch it's safer, it may be replaced in the future.
You _might_ make one with a microswitch and a cam om the pot shaft, the cam
activating the switch at bottom level. But i admit it's flaky as best , better is
to use a separate power switch it's safer, it may be replaced in the future.
As far as i now pots with power-switches has not been made in 20 years.
As the OP stated, you can still buy them, but they are not "ganged"/stereo. Alpha (Taiwan) item # RV16A03F-10-15R1-B5K is an example.
Not good idea...AC near to audio signal.
Agreed.
I remember long ago there where potm.s with a push-off/pull-on switch, no useless turning.Dono if there are still made.because the pot wears out more quickly if has to be moved every time you switch on or off.
Mona
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