How to tame a bright system?

Check the tweeter height versus your ear height. I personally like my ear in between the tweeter and midrange. Also, try toeing out to not have the tweeter directly pointed at your ears. Finally, implement room treatment, especially at first reflection points. You'd be amazed at the difference in a well - treated room with appropriate speaker and sweet spot positioning.

Small Incremental Tweaking to the Toe Alignment of the Speakers and Vertical Alignment can reduce the impact of the Upper Mid's and Highs on the Ears. This is a cheap experiment and might produce a improvement that has been overlooked even if it does not completely overcome the frequency levels impaction on yourself.

A Ring Donut of Soft Foam surrounding the Tweeter can have a very noticeable effect on controlling a Intense Upper Frequency, a few Donuts can be produced with differing Hole Diameters.   

The above two suggestions combined might prove enough and is quite cost effective as a method.

Another overlooked cause for such a intense presentation in the Upper Frequencies that are able to be detractors to certain listeners, is if a little too much gain is present through the device matching.

I have a -5db and -10db attenuator on standby for when such a suspicion is aroused. I at present have a -5db permanently in place, as a Pre Amp was able to produce a little too much gain, I can't detect any detriment to the SQ with the -5db in constant use.

As a Cable Suggestion I would recommend a D.U.C.C Wire in a Cable, these are a available from Mitsubishi (Manufacturer of Wire ) or Acrolink. My experience is that they are exceptional at resolving details and have a perception of a richness when compared to other Cables able to produce the detail. There might be just enough richness on offer from this wire to draw back on the High Frequency impact being detected by the ear, and keep the presentation close to the absolute preferred delivery.     

I use D.U.C.C in my System on certain devices and it is used alongside PC Triple C Wires, all Triple C wires can be startlingly revealing, the combination of wires and -5db, create the balance in presentation that is desired by myself.     

Put some felt over the tweeter.

@Millercarbon Yes it is copy past because I stated "Its One of the solutions" in this case https://mathaudio.com/room-eq.htm.

https://mathaudio.com/testimonials.htm

I could have taken the same point from other solutions like Dirac, Lyngdorf , REW etc etc.

Point is you avoid the statement from me that really matters "whats wrong with measuring". Further more we could have an endless discussion about EQ, DSP, Room correction an again IMO leave it to the listener that has to decide. Probably we agree on one statement “Music/sound is in the ear of the beholder”.😉

• I like the idea of a measurement.
• I like the idea of compensating the room.

The idea of swapping cables to get some magic synergy seems like more of a crap shoot.

I am onboard.

"Chord + Chord + B&W.  There you have it: a recipe for brightness"

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