Carpet Killed High Frequencies In My Music Listening Area

Problems with audio systems are not resolved by sitting and doing nothing. All that does is allow you to slowly accept inferior sound.  See my Audiophile Law articles on Burn In/Break In at Dagogo.com, where I demonstrate that systems do not change over time either with use or warmup. You are wasting your life by sitting and waiting. 

This major change due to a different room is typical, not a problem per se. You're room is radically different than before. You were hearing a lot of extraneous sound, much more reflectivity, and that is why you now hear so much better into the sound, i.e. midrange. You had "Hall effect" and now have "studio effect". I built my room to avoid the high reflectivity that imo impedes hearing into the system and music.

Go back to step one and configure the system in all possible iterations. i.e. preamp and amp settings, power cables swapped, or IC swapped, etc. You most likely can significantly change the ratio of treble to the rest of the frequency spectrum through trial and error. Try the system without the power conditioning and you may prefer it that way now that the carpeting is in play. Now that the environment has changed, you have to try all permutations to fit it to your tastes optimally. It will likely be configured somewhat differently as a result.  :) 

L-PADS,

if you had em, you would do exactly what they were intended to do: boost (reduce attenuation) for dull rooms; cut (increase attenuation) for live rooms. Adjust to Individual Tastes.

And keep your comfy gorgeous thick carpet. Better for preventing too early reflections.

Many Vintage Speakers included L-Pads, my Fisher President II Console had all electro-voice drivers, and each had a pair of AT-37 L-Pads: one for the mid horn; 1 for the horn tweeter.

The crossover was designed with mid-attenuation as 'normal', boost or cut from there.

Their Model 6 has a resistor network with 5 specific frequency curves in a graph, selected by rear switch.

I just replaced my 4 L-Pads, and it took me familiar music, then parts of 5 listening test cds to determine/adjust/refine each, then adjust L to R.

Combined with my new six 9's copper speaker wires and new six 9's copper interconnects, my system has never sounded better.

One of the things you NOW need to take care is about the cables lying on the floor. If possible raise them off the carpets. Will definitely sound silly. But makes a big difference, if you don’t take care of this issue. Use paper cups or cheap stuff to give it a shot. There is static in the new carpet. That’s the reason.

Wall to wall carpet, beautiful balance. Highs clear as can be. https://systems.audiogon.com/systems/8367 Can only be due to the cable elevators.