148.2 @ 25Hz Term Lab VIDEO

http://www.youtube.com/watch?v=CgIYV5UplrM



I was clipping horribly, especially from 15Hz-20Hz, I need 2 more HO alts and 4 more batteries

 

on my last few burps, after bottoming out a few times, it sounded funny. assumed that a coil or 3 or 4 was bent.













the bottom 2 subs are coil-on-top plate... stuck all the way out. Other 2 subs are scratchy... bent formers, unraveling coils.

Had 2 stuck subs and 2 blown subs on the last few burps and "Put ON"!!!

 

I made a video of candy shop last nite with the top 2 subs, left one is blown but still going, bottom 2 are seazed: coil on top plate... so I disconnected them from the amps. Got all four blue lights, amps are OK.

http://www.youtube.com/watch?v=QvOgWxxG87E

"put on" 148.2

LP set to 31.5Hz, HP set to 20Hz... only wanted the low note. clipping is terrible, not bad for needing 2 more HO alts and 4 more batteries!

http://www.youtube.com/watch?v=zdbdZFjT9Uo

132.5 15Hz 136.7 17Hz 140.3 18Hz 142.5 19Hz 143.8 20Hz 144.9 21Hz 145.7 22Hz

Terrible clipping, not as bad from 23Hz on up, but 15Hz-22Hz was massive clipping. So now I need 2 more HO alts and 4 more batteries.

4 Fi IB3 18's, 50 cubic feet, 20" diameter port 18" long for a 23Hz tune (more like 55 cubic feet 20Hz tune, but I'll do impedance sweeps later to get exact)

http://www.youtube.com/watch?v=Y4QjI1wjej4

147.7 23Hz hair trick unintentional

http://www.youtube.com/watch?v=nhVL0cqf79k

My resonant frequancy appeared to be 43Hz and 63Hz, according to the Tem Lab operator...but I think that was just harmonics he was going by. We never got to make a sweep, I wonder if I could get in the 50's up high where it gets real loud.

 

still in the box, pics taken from inside

 

IDK yet, thats so much money.. and my ears hurt as it is with the IB3's...

 

WinISD:

All things being equal, 23Hz tune vs 33Hz tune, 33Hz gets a 12dB gain



All things equal, Fi Q (built for my application) vs IB3 ( "can't/won't work not designed to work in my application")



Even 23Hz vs 31Hz, 8dB gain