Ran these numbers - SVS 20-39+ in room

[Ron Temple]

This morning (late) we decided to wake up my daughter to some test tones. I posted this at AVS, got good advice, thought I'd run it here. I'm pretty impressed with the output from 30hz down. John and I were watching the clock trying to shake off a nail..."It's gonna go" ... didn't . Discovered some interesting room reasonances doing the tones that go unnoticed during music or movies. Some were pretty stressful.

Calibrated to 80db, sub only, numbers adjusted to 75db and RS correction tables, receiver at minus ten, slight null in LP, biggest peak in the room is 8db against a wall.

160hz - 76db
142 - 78
125 - 78
111 - 90
100 - 91
89 - 94
80 - 88
71 - 94
63 - 95
56 - 95
50 - 87
45 - 88
40 - 97
36 - 104
31.5 - 105
28 - 106
25 - 106
22 - 105
20 - 104
18 - 102
16 - 96

I'm considering a BFD. Craigsub suggested cutting 18-36 with minor boosts from 42-53, which seems logical, a flatter response. Anyone know what I'm likely to gain? More definition? impact? Primarily I'm interested in SQ. I've got tons of headroom.

Room size 2000^3 opening into another 2&1/2 rooms totalling 7000^3 (which I didn't consider before purchase, but doesn't seem to be much of a factor) 20hz tune, preferred...

Thanks to JG for the player and time...had fun.

 

[j_garcia]

Yep, it sounded best in 20Hz tune with the 80Hz x-over. I'm very impressed with this sub It has immense and clean output at the bottom. With a BFD, you will most likely be giving up some output. You don't want to boost the dips, so you would have to reduce the higher peaks, meaning most likely the 36-18Hz range The 80Hz dip is probably crossover related, and since we didn't have the mains playing, that one may or may not be an issue. The 50-45Hz dip is the one you might want to try to correct, shooting for a nice blend with the 36 and below without killing it off.