I have 2 Brahma's (15's) laying around from my car audio days and I was thinking of a 10^3 box/Sonotube tuned to 20hz with [email protected] Ohms(any amp suggestions?). I modeled it up and it seems to be a pretty nice flat response from 20hz up. Does this sound good? You see I already am pretty good in the bass department in 2 of my 3 "active" rooms. The Living room has 2 SVS25-31CS+'s with a Sampson1000 amp. The HT Room has a 4 Tempest Duel Sonotubes tuned to 16hz with 2400 watts. I'm hoping the 2 Brahma's will out do the 4 Tempests so I can throw them into the HT room but that is going to be close IMO.