Help! Treble Trouble!

My process is to do the simplest things first and then progress to the more complex things.

I would remove, and replace, all interconnects and speaker wires, maybe even use a bit of contact cleaner. And, although your hearing is good, we can all clog up from time to time. I take a ring of keys and shake them by my left ear and then my right. Damn not scientific, but shaking keys have a lot of high frequency energy and you can tell if your hearing is temporarily compromised pretty quickly. You can also use your phone, or a DVD player that you might have, as a source to try to isolate the problem. 

And good luck with it, I am sure you will get to the bottom of it.

@thecarpathian 

Few questions 

1. Did this just start or that’s the sound you had from the first moment you set up the system in this house?

2. Does it happen with belles integrated with mytek completely out of the loop?

3. Have you tried connecting your system in another room?
4. Tried connecting it to another outlet? 
5. Have you checked outlets to make sure they’re installed correctly?

@audphile1 ,

1. Had it set up for a while, but just started doing more critical listening. No idea why I didn’t notice it before. My only defense is everything else sounds really, really good. 

2. Happens with Belles in the loop by itself and when solely using it as a preamp to Stratos. Happens with Belles out of the loop. Just checked with an old receiver and CD player: I now know it happens with Mytek both in and out of the loop. 

3. I have it in the only room it can be in. I have them dialed in where everything sounds great from where I sit. Can’t be room as I literally gotta stick my ear up to the tweeters to hear the treble.

4. I have the Stratos plugged into its own outlet, and everything else into a Fuhrman in a separate outlet. Both newly installed commercial grade when I set it up. Honestly everything else sounds great and can go louder than I’ll ever listen. Just missing that cymbal crash, etc. 

5. Outlets installed correctly.

The speakers aren’t 6 years old. I can’t believe a simultaneous failure in both crossovers. Plus, it happens on two different pairs speakers.

@viridian ,

I passed the key jingle test!

Given the symptoms, my first thought is to swap out the digital cable. I have seen/heard some weird things when there is incompatibility or compromise with digital cables. 

Revisit all settings on the DAC. 

Also, remove the Furman from the chain to ensure it is not the culprit.