moving OD trim pot to back panel. difficult?

docmh
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moving OD trim pot to back panel. difficult?

« on: May 01, 2009, 06:33:15 AM »

I have an ODS later model with the OD trim pot inside. How difficult would it be to add a pot on the back panel ala the new bluesmaster amp layout. Is the 100K L pot mean linear? Is it an easy mod? Can I just remove the old trimmer and bring wires over from the old circuit board location to the new pot? any Noise issues? I think it would be a great advantage to be able to dial in the OD amount on a gig.
I appreciate any input from forum members.


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hywelg
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Re: moving OD trim pot to back panel. difficult?

« Reply #1 on: May 01, 2009, 07:46:37 AM »

I did mine a long while ago (and the FET) when I was building it. I used shielded cable and Nik does in the bluesmaster. I used a small diameter pot Linear I think, but I really can't remember, same value as the trim pot. I used the spare holes in the back panel.

If you're competent with a soldering iron its a doddle. You'll need some heatshrink for the cable shield.


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mcinku
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Re: moving OD trim pot to back panel. difficult?

« Reply #2 on: May 01, 2009, 05:45:04 PM »

easily done... no noise issues (use shielded cable)

... definitely worthwhile mod
Wink


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roadapple
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Re: moving OD trim pot to back panel. difficult?

« Reply #3 on: May 21, 2009, 09:17:53 PM »

Exactly how did you mount the small pot to the back panel? Could I use a larger pot, Linear, 100K like the volume knobs?

What size wire did you use? 22/4 shielded good enough or heavier shielded cable?

Any special routing on the wiring?

I doing this because (even being extremely careful) I got zapped big time last night, even using a 100% non-conductive plastic trim adjuster.

Guess what? It HURT! It jumped about 3-5 inches to get to my hand.


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