Need Expert Opinions On An Old System

You can change your cables because they are all tone controls to a pure silver which will give you a little brighter sound. If your old room had hard products (wood, concrete, tile or etc.) on the floor, walls or etc. then that will make the music brighter. Just the same softer products (carpet, drop ceilings and etc.) will smooth the music out and also a larger room will do the same thing, because of reflections or lack there of like the smaller room.

Sub/amp combo hooked up following preferred method by NHT where I ran the input into the back of my amplifier, then the cabling from main amp to the NHT amp. From there, the NHT amp splits off into the speakers and sub. Crossover set for lowest setting (35hz). Bypass (whatever that is) is set for ON. Overall sound is better in most regards but I notice a few things:

1. The 8" woofer on my NHT 2.5s don't seem to have a lot energy/sound coming from them. Crossover on NHT amp set for 35hz and specs on NHT 2.5 say 80hz. When I turn the crossover setting higher than 35hz on NHT amp, I get less sound from the NHT 2.5s.

2. Overall sound levels are much lower. I'm having the turn the level on the preamp much higher to get same db levels.

3. When I turn the NHT amp high enough to get the desired bass levels, I notice it picks up a large amount of mids thereby centering the soundstage around the sub (placed between the two speakers). When I dial the NHT amp down to get the right amount of soundstage, the bass seems a bit thin.

*Room is 17'x22' with a 17'x15' kitchen/breakfast area adjacent.....Speakers: NHT Model 2.5*

I can't pretend to be able to figure all this out, & I don't know all your components that well. But that's a very big room, by my standards. I do remember the NHT 2.5's--I listened to them in the mid-90's, I think they cost $1250 new, is that right? They certainly weren't bad.

*sparkled.....any opinions on an inexpensive upgrade path would be welcome*

I just can't figure how a system with NHT 2.5's is going to Sparkle in a room that large. Your components aren't "bad" by any means, but Sparkling can cost fairly big bucks....esp. in a room that large....