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tech question - Need help finding the correct pots

 
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The2and4
ass engineer


Joined: 25 Jul 2004
Posts: 46
Location: L.A.

PostPosted: Wed Feb 16, 2005 6:52 am    Post subject: tech question - Need help finding the correct pots Reply with quote

Got a Demeter Series H tube mic-preamp, but the pots are really scratchy, noisy and even if I find a setting that works, I get a little "ffffT" noise every once in a while.

I think I can handle replacing them myself, but need help finding the right pots. I got some great help over at PSW, just trying to make absolutely sure that I get the exact right stuff. I just can't seem to narrow it down to the right ones. Does anyone here know this particular preamp? And maybe a part number for the right replacements?

Alpha pots, A500K and A20K. Three little connecters soldered to the board.

Please, oh please. This thing sounds awesome when it works!
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kcrusher
tinnitus
http://www.bombastique.com/bucky.jpg

Joined: 09 Oct 2003
Posts: 1200
Location: Location! Location!

PostPosted: Wed Feb 16, 2005 11:54 am    Post subject: Re: tech question - Need help finding the correct pots Reply with quote

Why not contact Demeter directly to find out?

http://www.demeteramps.com/
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puffpastry
pushin' record


Joined: 05 Sep 2003
Posts: 219
Location: Uptown/St. Ben's

PostPosted: Wed Feb 16, 2005 1:56 pm    Post subject: Re: tech question - Need help finding the correct pots Reply with quote

I would advise that you check for the presence of DC voltage on the pot in question before you replace it. A leaky coupling cap can cause the problem that you're experiencing, but replacing the pot itself won't clear it up.
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