[sdiy] ALPS RK09K 9mm "knob shaft" pots

Robin Whittle rw at firstpr.com.au
Mon Aug 27 07:29:51 CEST 2012

Tom Bugs pointed me to a Tiawanese equivalent of the ALPS RK09K "knob
type" snap-in pots.  He uses them on some of his instruments, including
the BoardWeevil:


There are single versions (R0903N and R0904N for vertical mount, without
or with "colour" - I am not sure what this means) and dual versions
(R0903G and R0904G):


They also make horizontal versions and have D shape and other shaft options.

I meant to ask for a quote on single units but accidentally asked for a
quote on a R0903G-B10K,L-20KT, which is a dual 10 linear with 20mm knob
shaft, without painted slot.  The price was USD$0.40 with a minimum
order quantity (MOQ) of 1000.  They could paint the slot white, but this
involved an MOQ of 2000.

Song Huei also make 9mm metal shaft pots with spline shafts, which would
suit the Re-an P570 knobs Andre Majorel pointed me to (see "Re: [sdiy]
Inexpensive Rolandesque spline knobs from Thailand, 2012-08-07).  ALPS
don't make spline shaft pots of this type - as far as I know, only
Tiawan Alpha and BI Technologies do.

 - Robin

More information about the Synth-diy mailing list