Why do you think I went to a 160" screen

Trikos, LOL . At least it's an excuse to upgrade .

Check out this free software for setting up the BFD:
http://homepage.ntlworld.com/john.mulcahy/roomeq/index.html

Dundas, thanks for the tip . Looks like it could be worth a try . Have you used it and if so to what success .

Dundas,

Yes, good info. I can do all these things without. But for people that don't have the equipment, this would be an excellent solution.

If it works..

Trikos, what do you mean by that?

Assid,

You need to supply 48v to the mic in the balanced mic supply.

You can buy some small pro mixer used from a pro audio store, or a new small pre-amp like http://www.behringer.com/MIC800/index.cfm?lang=ENG

or you can build one like Eric Wallin's at http://mysite.verizon.net/tammie_eric/audio/preamp2/preamp2.html

Even new, some of these mic supplies are like $50.

What about this model of theirs, that has a built in mic amplifier?

http://www.behringer.com/DSP110/index.cfm?lang=ENG

EDIT: Oh, after reading a little of the manual, I don't think it would work as we'd want to use it...

That unit is fine, but is based on the Feedback Destroyer, but not the Pro. It is missing some features and has some that can cause you a bit of headache. Like compressor/noise gate which is not for this application. Its $30 more than the FBD so I prefer to go with a $30 used mic mixer since the FBD will end up staying in your HT equipment.

The rest can be extracted to test other speakers or used in another room for building speakers. You don't want to put your FBD out of the loop every time you want to do some speaker testing.

Update: Also you will want to be able to download your FBD settings thru the MIDI port to a PC for a backup, and also to play with different group settings. The FBD is nice that way. You can use it to test other subs and easily go back to your base settings for your current HT setup.