Trying to build dipole sub - a la Celestion 6000

Siegfried Linkwitz has written extensively on dipoles. Read his web site.

http://www.linkwitzlab.com/

Analog solutions to the dipole roll-off and sub-woofer cross-over are simple and are possible in passive line level form if you have enough gain in your preamp + amplifier.

Note SL's Phoenix prototypes page which has an H-frame with passive dipole equalization and LR2 cross-over to the main speakers.

http://www.linkwitzlab.com/proto.htm

Also note his active filter cookbook

http://www.linkwitzlab.com/filters.htm

Enjoy!

Should add that Madisound offers a service to precision cut the wood.

For this purpose, there are some pro amps that offer gain control, delay, crossovers and DSP along with gobs of advertised power for between $500 and $1000. Crown XTi series, Peavey, Powersoft, etc... Even saw that one had RCA's.

Wow,

Thanks a bunch for all the tips.

I was looking into direct drive woofers to deal with potential ringing problem of the drivers.

I have the behringer dcx2496 serving as the active cross over in my setup. So it can do some degree of DSP and filtering if need be.

I currently have more great amps than I should. I'm using my mccormack DNA 500 for bi-amp for my bass currently. I also have another pair of VTL 450MB and nuforce amp on standby as well. My primary amp is a pair of Ampzilla 2000 MKII driving my electrostats right now.

I probably will go with with a crown or peavey in the long run and sell the other amps if this sub arrangement works out.

I don't know if any of you has seen/heard the Celestion 6000 bass system. It is configure with the woofers firing directly into each other with only about 6 inch gap. Haven't figure out how all that works, but what comes out is clean tight bass that can really rock a room. My friend drives his system with just a old Krell 100 watt KSA amp; and that 100 W was more than enough totally roch his music room. Although the 100w krell can be deceiving as it can pump linear amount of juice as impedance goes down; all the way down to 1 ohm.

Does anyone know of a design for dipole sub where the woofers fire into each other like the celestion?

The reason you don't see much of this is because there's not many crazy enough to try. "Dipole subwoofer" is about as close to an audio oxymoron as an unbiased opinion.

NgJockey,

Interesting point you raise there...

I am amazed at the results the Celstion 6000 subs have been able to produce.

I'll have to look into the links provided above to research this better.