E- Stat: Are you mention that you have your sub accounting for the frequencies above 80 hz and I assume unfiltered, therefore you blend your sub without using a crossover by essentially let the sub fill in the gaps where the speakers roll and let the speakers handle the rest? Hope that made sense. Or I assume you have a high crossover. By the way, which equalizer do you use in your room.

I have a sub I am happy with and heres the link http://www.crystalaudiovideo.com/product.aspx
It was 650 dollars new, but only has an LFE input, no crossover and limited function. Seems like a quality woofer, I brought it to my dealer and even he said it was accurate, low distortion, andfairly well controlled. By far not the best sub, but worth keeping. I have refrained from using it for two reasons. With only and LFE input I assume the sub was made primarily for HT use and not HIFI. After all its maker, crystal acoustics is primarily a HT speaker company. The other being with no crossover, my purpose for using the sub would be defeated. I want a sub which can fill in for my mains via low pass filter and take some stress off of them via high pass filter.

I had considered keeping the sub, because I think it was blackraven who told me of an inexpensive crossover. The unit was the behringer SUPER-X PRO CX2310. I checked it out and decided against it for two reasons even though it was an affordable 100 dollars. The unit has a DJ style look which has no place in my hifi room, and because I was afraid that the crossover to my preamp would distor the signal to my mains. Unfortunately to my knowledge most other stand alone crossover units are very exepensive .

As for DIY, I am seventeen and in all honesty am afraid I would mess it up. So DIY is not my best choice, but for those capable, has to be cost effective.

With a dedicated listening room I have the luxury of placing the sub anywhere in the room so if you think two subs are substantially better if place well, than I have the room to work with.

One more question for E Stat. You talked about the frequency response being very smooth in your room, do you have bass traps as I am strongly considering building some of those you mentioned in my last thread? Would you consider properly placed and constructed traps as or more important to the frequency response than the quality or lack of a sub?