iekobrid
Authorized XSr Dealer
Yeah, my Ampeg combo had similar no-/fading- sound issues a few years ago that a fresh pair of 6550s cleared up in a jiffy. Here's hoping that's all this is, and not, say, a cracked PCB or something.
Might the woofiness suggest that new preamp tubes wouldn't be a bad idea either, or is that just what 5150s tend to sound like in person (hence the existence of a clarity mod)? My first hand experience is limited to this unit and a few minutes with a 6505 combo a year ago.

Might the woofiness suggest that new preamp tubes wouldn't be a bad idea either, or is that just what 5150s tend to sound like in person (hence the existence of a clarity mod)? My first hand experience is limited to this unit and a few minutes with a 6505 combo a year ago.
