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Why does my system now have shrill top end.

The equipment in my system (listed below) has not changed but I now find on both CD and Vinyl a high end shrillness to the sound (treble is very harsh) that has become very annoying, especially at high volume levels. I have no idea why this happened all of a sudden.

Endevour E-3
Pass 30.8
Pass XP 20
Esoteric K01x
Linn LP12 (Ortofon Black cartridge)
Linn Linto Phono Preamp
PS Audio P5 (Amp plugged in directly to wall)
JL Audio F112 v2 sub
OCOS Speaker cable (15 feet)
Pass XLR interconnect (Preamp to Amp)
Harmonic Technology Cable Magic Link (not current version). RCA termination

Any ideas?
proacman
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toddverrone's avatar
toddverrone
840 posts
 
+1 @grannyring 

Al and (most of the time) shadorne do a good job of disagreeing without attacking. 

Criticize the idea, not the person..
almarg's avatar
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almarg
9,670 posts
 
Jea48 11-28-2017
Al,

Is it possible the P5 is the problem? ... When the OP is using the P5 for the front equipment could the P5, because of some internal problem, be causing the sound problem?
I would think it’s unlikely, Jim, but I suppose it’s a possibility. For example, perhaps the MultiWave circuitry is misbehaving and doing funny things with the AC waveform, even when it is supposedly not being used.

In any event it’s easy enough to find out, as you suggested.

Also, another thing I would suggest that the OP do, if he already hasn’t, is to use the P5’s oscilloscope function to look at its incoming and outgoing AC waveforms. And see if either looks dramatically different than a sine wave.

Best regards,
-- Al

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geoffkait's avatar
geoffkait
23,365 posts
 
Proposition: There are less Morphic fields 👻 👻 👻 floating around late at night. And early in the morning. Especially Sunday morning. Morphic fields are frequently misinterpreted as "power grid activity." You should notice excellent sound quality issuing forth from your system during those times, generally speaking. Very weather dependent, too, low pressure systems bad ⛈ , high pressure systems good 🌞. It’s doesn’t take a rocket scientist 🚀 to realize there are a great many variables involved, certainly not (repeat not) only one or two.
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