The Spectrol pots are being re-tooled for Y2K. So here is a head's up! First, the leads are longer. If you have built a MOTM-800, the Bourns pots (the blue ones) have the longer leads. The new Spectrol leads are 0.650 long and slightly thinner than the Bourns (which are quite stiff!). Second: I may be switching to Series 148, which are conductive plastic elements (as opposed to cermet) for *some, not all* cases. Cermet is #1 for temperature stability, but has a shorter rotational life (by 4X) that CP. CP is also somewhat quieter, for applications like audio attenuation. The log pots on the '420 are CP. The Bourns pots are all CP. I do not want to revise all the docs at this time, having just spent $390 on printing. So, if you see a 148 part instead of of 149, *DON'T PANIC*. Third: Spectrol changed the body to be 1 piece molded for all new 148/149 orders. Lastly: The 148 CP pots will have a *lower rotational torque*, somewhere between the 'tight' 149 and the 'looser' Bourns pots. But it's actually "smoother" to me than the 149. Sadly: They raised the prices about 80 cents per pot. So, future module pricing will reflect this. I have about 600 of the current 149 cermet pots. The 148s will appear in about 3 months. Just covering this today as I run around in a panic placing orders (12 week lead times!!) Paul S.
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The pots, they are a-changin'
2000-02-08 by Paul Schreiber
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