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My experience adding subwoofers to 2 channel

My Kappa 9 speakers are rated to 29hz and they sound pretty good in my 18x24 room...powered by McIntosh mc1.25 amps...l was looking for another layer of bass to enhance the sound..my first experiment l took my SVS pb16 ultras from my theater room and tried them first...it sounded terrible,didn't blend well..couldn't hear a difference until you turned in up then it rattled the room apart........my final experiment worked..l used 4 Velodyne minivee subwoofers(1000 watt rms class D sealed 8 in.) and after hours of calibration l hit it......lve got the bass response that exeeded my expectations. ....l should have done this along time ago....can anybody tell me of another subwoofer that may work even better?
128x128vinnydabully
clio09
3,355 posts
 
@mijostyn, yes that includes the direct drive amps and bass amp with active crossover. As for why it's not on the website the main reason that Roger doesn't have the time to bother with it.
bdp24's avatar
bdp24
9,800 posts
 
@clio09, are you sure the $12,000 price is with the d-d amps? I stated that a few months ago in another thread, and you informed me that was incorrect, the $12k was for the panels and subs, the d-d amps were an added-cost option. If the price includes the amps, that is quite the bargain!
clio09
3,355 posts
 
@bdp, thanks for pointing that out and sorry the mistake. The DD amps are extra. If purchased without the DD amps a separate power supply for the panels is included for use with other amplifiers.
mijostyn's avatar
mijostyn
8,570 posts
 
Are the DD amps designed after the Acoustat amps. How tall and wide are the ESLs. Single flat panel? Does he use them himself?
clio09
3,355 posts
 
The DD amps are not designed after the Acoustats other than they provide the requisite voltage to the panels. A while back Roger designed a drop in board for the Acoustat amp that used 3 x 6DJ8/6922 for a tube input. IIRC his amps also use this input, but he also designed a different output. The ESL is a single flat panel designed for wider dispersion than other panels of this type. I am not sure of the measurements but it has a small footprint. If I had to guess it is 40" tall by 18" wide. Roger does use the panels and amps in his system with an active crossover and two bass speakers.
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