In article , Mike Coatham
wrote:
On 26/01/2010 4:51 a.m., Jim Lesurf wrote:
In , Ian Bell
wrote:



I think I know exactly which pot you are looking for. It is the very one
that Quad used in their 44 Control Unit - 40mm Alps pot, Dual gang
500kohm (stepped attenuator with 21 detents of approx 2db each ?). I've
had a look at one and the numbers on the back of the dual pot are :
024B-494.55K# x 2. Underneath this is another number : A3/12425

No, that isn't what I am using - although that have the same physical
appearance IIRC.

What I'm using is the 20k semi-log pot for volume as a conventional passive
potential divider.

I've tried a search on these but haven't come up trumps but I suspect
that anyone wanting one could probably get them from Quad.

Yes, I'd expect to buy the pot used by Quad from them. But it isn't what I
am using.

FWIW I have these Alps pots in 20k, 50k, and 100k values.[1] Also various
examples of the physically smaller ones, mainly with the law convenient for
balance with a center detent and no attenuation at center detent.

[1] Have them partly as 'spares' from my Armstrong days and blagged from
suppliers at various times. :-)

Slainte,

Jim

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