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John Allen 31st July 2004 12:00 AM

dipole surround XO design -Visaton
New here, so please bear with me......

I'm in the planning stage of building a set of dipole surround speakers and I have a couple questions.

I came across a german website that some of you may be familiar with,, that has some kits similar to what I I'm looking for. The interesting thing about this site is that they show construction drawings and crossover designs without having you purchase anything.... Anyways, their crossover claims to operate the woofers in phase below 200hz then out of phase above that.

Here is a quote from their website:

"The all-pass circuitry in the deep-bass department ensures that, at frequencies above 200 Hz, the woofers are also cross-connected, and below that level they work in synch. This prevents the bass completely cancelling itself out."

The webpage for this item is at

The crossover schematic is at

Does anyone have any comments on this kind of design? Does it work? Is it noticable?

Thanks in advance

John Allen 6th August 2004 08:07 PM

No comments on this design?

I'm going to go forward with using this design (modified for my drivers, of course) and we'll see how it works.


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