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dodog 24th April 2013 03:36 PM

Need help finding an ALPS Blue Velvet pot
I'm looking to build a Haller attenuator and need to source a 100K ALPS Blue Velvet. A search on Mouser brings up the following:

RK27112 | Mouser Electronics, Inc.

Can anyone tell me which of them is the "correct" one? FWIW, I'll probably just couple it with a standard 1/4" knob so I'm assuming that a 6mm shaft diameter is correct. If I'm incorrect in this assumption and/or if I'm looking at the wrong part altogether, please let me know. I'd like to order from Mouser so that I can include some RCA jacks, resistors, etc. that I need for other builds.

Thanks in advance for any/all feedback.

coronadischarge 24th April 2013 06:03 PM

Six mm = .236" so should be close enough to .250" to couple the two together.

dodog 24th April 2013 06:25 PM

There is a set-screw on the knob so it'll work out fine then. Any thoughts on which is the correct part? FWIW, I'm looking at this one now:

RK27112-S20C1MN104 (RK271122004D) ALPS | Mouser

coronadischarge 24th April 2013 06:45 PM

The one you listed looks good as long as it meets your requirements. It's spec'd at 100 kOhms with an audio taper. If that's what you want, it appears to be a good choice. Alps makes one of the better pots.

dodog 24th April 2013 07:13 PM

Should be what I need. 100K, dual-ganged, audio taper.

xjr100 26th April 2013 07:45 PM


Originally Posted by dodog (
Should be what I need. 100K, dual-ganged, audio taper.

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