Room treatment for reflections is high up the list.
Electronically, it would be to increase the resistor value in the tweeter’s high-pass filter on the crossover (e.g. go from a 2ohm resistor to 2.7ohm resistor). This would reduce the level of the tweeter by a db or so and leave everything else the same. But you’d need to be OK removing the drivers, crossover, and soldering. Tweeter crossover capacitors could also be swapped out for more boutique brands with a warmer sound signature. A couple of resistors would just be a few bucks. Boutique caps could get much more expensive depending on brand and values needed.
Otherwise, cable switching (or biwiring) could give you the normal audiophile "solution" to tone controls!
One might also consider a dsp solution for room eq.
A sub does not "solve" bright treble; it would rather change presentation if low end is lacking. Not the same thing.
TBH, everything except room treatment and the resistor change would be of dubious value for money in my eyes.
Electronically, it would be to increase the resistor value in the tweeter’s high-pass filter on the crossover (e.g. go from a 2ohm resistor to 2.7ohm resistor). This would reduce the level of the tweeter by a db or so and leave everything else the same. But you’d need to be OK removing the drivers, crossover, and soldering. Tweeter crossover capacitors could also be swapped out for more boutique brands with a warmer sound signature. A couple of resistors would just be a few bucks. Boutique caps could get much more expensive depending on brand and values needed.
Otherwise, cable switching (or biwiring) could give you the normal audiophile "solution" to tone controls!
One might also consider a dsp solution for room eq.
A sub does not "solve" bright treble; it would rather change presentation if low end is lacking. Not the same thing.
TBH, everything except room treatment and the resistor change would be of dubious value for money in my eyes.