Diagnosis unknown

General Asylum

General audio topics that don't fit into specific categories.

Last night, my system cycled through a strange set of events. I heard a thump or pop, then soundstage collapsed, highs were muffled, and volume reduced. Switched sources, same problem. The effect was the same in both channels, so I assume that it was not a tube in my Sonic Frontiers Pre-1 (6x 6922s). And I also assume that if it was something like a tube, it would not get better nor would it fail to exhibit some sort of noise. No funny noises going on. Everything seems OK this morning, back to normal. Could something like what happened be the result of some sort of power sag? Since the TV/DVR/Sat. receiver were fine when I switched on the TV after shutting down the audio system, I wonder: Can a basic Monster power filter that feeds the preamp somehow be the culprit? (My amps are fed off of a Wiremold strip with no filtering. All power connections seem tight.
Any ideas of where to start a diagnostic sequence?
Thanks for your thoughts.

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Topic - Diagnosis unknown - William 09:58:37 02/25/07 (6)

Re: Diagnosis unknown - Chuck Y 09:38:00 02/26/07 (0)

Do you know how to begin trouble shooting your problem? - Vic D 08:23:20 02/26/07 (0)

P.S. Pre is a "line-1", not what I wrote.nt - William 15:33:50 02/25/07 (0)

It's BAAAACK! - William 15:32:19 02/25/07 (0)

If its back to normal, be happy........ - Chuck Y 12:22:13 02/25/07 (0)

"Everything seems OK this morning, back to normal" - Richard BassNut Greene 10:22:30 02/25/07 (1)

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