Dave :^)

http://www.euronet.nl/users/temagm/audio/dipolesub.htm

http://babelfish.altavista.com/babelfish/urltrurl?url=http%3A%2F%2Fmitglied.lycos.de%2FMundU%2Faudio%2Fdipolsubwoofer.htm&lp=de_en&tt=url

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

http://www.adireaudio.com/diy_audio/drivers/adire/dpl12.htm

http://www.diysubwoofers.org/dipole/

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