I am selling a corner dipole subwoofer that is based off of plans from the November 2004 issue of Audioxpress magazine.
It features two Acoustic Elegance IB15HT drivers.
It is a unique beast it gives up max spl for a quick decay of bass in the room.
An active eq is a must. I can include my minidsp if the price is right.
It is heavy so I imagine this would be local pick up only in Minneapolis, MN USA
It is made from 3/4" baltic birch with tropical tigerwood bracing.
More info and pictures here: http://projectgallery.parts-express.com/speaker-projects/corner-dipole-subwoofer/
$400
It features two Acoustic Elegance IB15HT drivers.
It is a unique beast it gives up max spl for a quick decay of bass in the room.
An active eq is a must. I can include my minidsp if the price is right.
It is heavy so I imagine this would be local pick up only in Minneapolis, MN USA
It is made from 3/4" baltic birch with tropical tigerwood bracing.
More info and pictures here: http://projectgallery.parts-express.com/speaker-projects/corner-dipole-subwoofer/
$400
What are you replacing it with? Looks like a well done build, using excellent drivers! The only limitation I could imagine would be serious home theater bass (15 - 25 Hz.).
What a fascinating dipole sub. With the dipole sub set-up with two woofers which way do you wire the paired woofers to move? I guess they can be opposed (opposite phase) like a ripole or alternatively they could move in unison (in-phase)?
Kazap, I tried it both ways and measured distortion. What worked better was a ripole setup, so in the central cavity that fires into the corner the drivers are opposite phase. Because of the way I mounted the drivers the 2nd harmonic distortion is cancelled somewhat and is real low.
Here's an IMD test I conducted with the corner dipole of 30 and 72hz tones at 80db at 2m in my room you can see the 2nd order distortion at 60hz is way down (-45 db down) and the 2nd order IMD product of 102 hz is fairly low too (-36 db down)
Here's an IMD test I conducted with the corner dipole of 30 and 72hz tones at 80db at 2m in my room you can see the 2nd order distortion at 60hz is way down (-45 db down) and the 2nd order IMD product of 102 hz is fairly low too (-36 db down)
Compare this to AE SBP 12" in a 3 cu ft sealed box. Yes, this test is in a different room and at a closer distance (4ft) but you can really see the difference in 2nd order harmonic distortion -(5 db down!).
