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In Reply to: Re: Big subwoofer posted by Mike Bates on January 09, 2002 at 21:08:41:
I had an EV 30W, the Fs=16hz.With it mounted in the wall and a 35 cu ft box with a 12" dia port 13.5" long on the front side of the cone the -3dB points are 9~43hz.It is also almost 100dB/W/1M.
Follow Ups:
pretty impressive DJK! so front chamber about 18Hz?
(think George Wright used one in sealed box with MIDI...)
Yeah, about 18~19hz on the front chamber.Now if you want some real output a type 6A with 100/50 cu ft with an Fb of 19/37hz gives an F3 of 20~50hz and 105dB/W/1M without room gain.Without room gain the type 4, 8hz box is only 90dB.A real novelty, I should have kept it.Sold it for $200 about four years ago.
WOW! I looked at published specs a while back and the fs was in the 30's?What'd you do with it? Seems like something to keep.
Mike Bates
A retired organ buff wanted one for his collection.For $200 I should have kept it.Put it in a 50 cu ft box with an F=22hz and an F3=31hz.With a Vas=210 cu ft, 50 cu ft was about as small as you could go.I just play with this stuff a while and then let it go down the road.Want to play with an M4? I got a spare you could borrow.
Sure! I'd love to compare it to the Adamson some time. I'll shoot you an email after i get my 4-way system working again.Thanks
Mike Bates
One of the recommended setups for this monster was a 64 cu ft box. No port, but the woofer was turned to the wall with a 2-3" spacing to slot load the monster. Like being in an iron lung.E-V used it in the later non-corner non-horn version of the Patrician.
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