Bottlehead Forum

Bottlehead Kits => Legacy Kit Products => Seduction => Topic started by: smithanh on February 12, 2013, 03:45:11 PM

Title: Intermittent change in sound
Post by: smithanh on February 12, 2013, 03:45:11 PM

Recently, I've developed a significant change in sound in my left channel after playing a couple albums. The sound gets louder, brighter with a drop in bass output and with more glare. If I turn the seduction off for a while, then turn it on again, the same pattern repeats. I suspect I've got a bad solder joint, but I was hoping someone might be able to give me some direction about where to start locating it.
Thanks as always

Title: Re: Intermittent change in sound
Post by: Paul Joppa on February 12, 2013, 04:53:32 PM

It's somewhere in the RIAA equalization circuit, in or around the 0.033uF cap.

There's a slimmer chance the tube is going bad - swap tubes to check that.

Title: Re: Intermittent change in sound
Post by: smithanh on February 13, 2013, 05:21:56 PM

Thanks Paul, I unclipped the C4s board and cleaned up some extra solder that I couldn't see. That did the trick!