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What's Going On?? Sound changes every night

O.K., this is what I'm experiencing: Some nights my system is superb and I just get sucked in and have to force myself to stop. This will be for 2-3 night and then all of a sudden, the next night or three, the music looses life and I can't get involved. The sound looses high end sparkle and extension. Things sound closed in a bit and percussions instruments that the night before were right in front of me are now fake with a closed in and shelved down presentation. Cymbals no longer sound like wood sticks on bronze but as if someone threw a blanket btw me and them.

Is this a power conditioning problem? I use a hospital grade outlet but not a dedicated circuit and no power conditioners. Or could it be my DAC which is a Perp Tech w/ Level 2 WrightMods and cryo treament. When the system works right I couldn't be happier but it seems something weird is going on every few days or so. Could it possibly be coming from the local power company and I need some sort of powerful line conditioner?

System:

Merlin TSM-MX speakers
REL Strata III subwoofer
Air Tight ATM300 stereo amp
Joule-Electra LA150 pre-amp
WrightModded Perp Tech DAC
CEC transport or Marantz SE 5 disc changer as transport
Cardas Golden Reference interconnects
TG Audio speaker cables
tomryan

Showing 1 response by sns

sns
3,571 posts
 
Stehno makes a key point in that dedicated lines will not clean up the AC from outside your home, and unless you have a dedicated ground on that dedicated circuit you will still get feedback from other appliances in the house. I have 3 dedicated lines (10 guage, 20 amp, power ports) but grounding those on existing ground did nothing to alleviate EMI from other appliances. Some use a seperate (dedicated) ground for their dedicated lines but I've heard this can be potentially hazardous because of potential between the 2 grounds.
Even after the dedicated lines I heard variable quality from system so I went to power condtioning as well. Originally PS300 on sources only, now I have BPT 3.5 Sig. on everything. No variability anymore, noise floor has dropped considerably, stable image, etc. If you have dirty AC this is the way to go.
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