DIY Bipole speakers

[Mr A]

Hello,

has anyone built any of these or know where I can find out the design sizing theory. I have winisd which sizes convetional speakers but it cannot do Bipole or three way units either.

[ReTrO]

Try ssearching the net, there are plenty of sites dedictaed to speaker building. Madisound in the US is a good place for x-over design.