Reverb feedback on Session 400

Bill Wilson · Post by **Bill Wilson** » 27 Apr 2001 10:06 pm

This amp has always had a tendency to suddenly start high pitch feedback in the reverb - when it is turned to zero the feedback stops. I have had this happen on stage to some considerable embarassment. I think it is about a '94 model.

Recently it has gotten worse, to where the reverb is unusable. Has anybody else experienced this or know the fix for it? I am switching to my Twin Reverb for gigs and putting the Peavey in the garage. Maybe I'll sell it, but I can't do that in good conscience while it has a problem like this.

Jack Stoner · Post by **Jack Stoner** » 28 Apr 2001 2:26 am

Check the Reverb I/O connector on the chassis. I think the reissued Session 400LTD's used the same Molex (white or cream colored nylon connector) that the Nashville 400's use. That connector is the source of almost all the reverb or reverb noise problems in the Nashvilles.

Unplug the connector and spray both the male and female pins with contact cleaner and then reconnect, and see if that fixes the problem. The connector is located on the underneath part of the chassis and has the two cables that go to the reverb pan. You might have to take the back cover off to see it.

Derrell Stephens · Post by **Derrell Stephens** » 29 Apr 2001 4:31 am

Try putting an old folded bath towel overit; just fold and lay ot over the pan. Sometimes it will help.

If that doesn't do it, get a new pan from magic parts or align the spring end connectors within the transducers. Lots-a-luck.

Mike Brown · Post by **Mike Brown** » 1 May 2001 8:24 am

Or, you may purchase the new pan direct from the Peavey factory by phoning 1-877-732-8391.