MOTM

I was wondering about the difference between the Bourns and Spectrol
pots and why the MOTM-800, which uses Bourns, would need different
spacers.  What had confused me was that the Bourns pots I had been
using for diy are a different size that those used for the 800.

The Bourns 50K linear pots I have been using for diy are labeled
"51AADC20A18 50K MEXICO H9114X" (which I purchased surplus for $2
each).  They have metal bushings and metal shafts.  The only issue I
have with them is that the shafts are a bit short, but they still
work.  My point is that they have 1/2" bodies just like the Spectrol
148.  The Bourns pots for the 800 have 5/8" bodies.  So I'm
wondering, are 1/2" Bourns pots a possible replacement for 148 pots
on MOTM PCB's and does Bourns make 1/2" log pots??

It looks as though all of these pots, the 5/8" Bourns, the 1/2"
Bourns, and the 1/2" Spectrol all have the same lead spacing.  I can
see how the MOTM-800 5/8" body Bourns pots would place the PCB at a
different height so different spacers would be needed, but I don't
understand why they wouldn't fit in MOTM PCB's designed for Spectrol
148/149.

Could someone please explain this??


On 5/22/07, Paul Schreiber put forth:
>  > I'm a bit confused here.  Do the Bourns pots fit the holes in the
>  > PCB's originally designed for Spectrol??
>
>No. All of the pc boards would need to be redone.