Awhile back a friend and I took a stab at building a Juicy Music Tercel phono preamp. Well . . . it didn't work when we'd finished it.

Mark Deneen (owner of Juicy Music) agreed to make it work, for a very reasonable charge, even though he'd shut his doors in the interim. And he did, but the thing has always had a bit of a hum. In my 2 channel only system it is not so bad, and is pretty much covered by the music for the most part.

But today my brother and I hooked it up to my HT/Multi channel/2 channel system, and the hum was really obvious and quite loud (maybe it's the Klipsch speakers that are particularly sensitive?). It seems like your typical 60 cycle hum coming through the speakers, and goes up with the volume and is silent with the volume all the way down.

The ground wire was on tightly (I removed it to test and the hum got a lot louder), so it's not that.

Also, the hum is quite a bit louder in the left channel then in the right, and it is equally present using either of the Tercel's 2 inputs.

I suppose there is a bad soldering joint in there somewhere maybe? I can't really send it back to Mark because I've waited a long time and the shipping alone will be expensive, and I can't imagine finding the problem myself. There's a local guy who would probably not charge much, but I thought I'd turn to VA first for any suggestions.

Thanks in advance!
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"If you are the owner of a new stereophonic system, this record will play with even more brilliant true-to-life fidelity. In short, you can purchase this record with no fear of its becoming obsolete in the future."

 Possible ground loop.... - Salectric 09:21:53 11/08/09 (0)