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Variable phase circuit for sub
Variable phase circuit for sub
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Old 29th August 2001, 11:32 AM   #1
ergo is offline ergo  Estonia
diyAudio Member
Join Date: Mar 2001
Location: Tallinn, Estonia
Does anyone know if there is a circuit layout available for variable phase adjustment for subwoofer?

I'm planning to build a sub to compliment my stereo speaker setup (Dynaudio BM5 studio monitors) to extend the very lowest frequencies a bit. I would also like to build my own sub amp with active filters and variable phase adjustment. The problem is that I don't have a schematic for this variable phase circuit.....

If anyone can help me I would appreciate it very much

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Old 29th August 2001, 12:06 PM   #2
Geoff is offline Geoff  United Kingdom
diyAudio Member
Join Date: Apr 2001
Location: UK

Have a look at Siegfried Linkwitz (of Linkwitz-Riley filter fame) site at:


There is a mass of information on active filters, time alignment, phase alignment etc. If you cannot find what you are looking for here (though you may need to delve into the various project files) then I doubt you will find it anywhere on the web.

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