Do you know this Project from Beyma ?

Ibex wrote: bitzo, driver displacement is not subtracted from vtc, I expected that the driver is fireing into the chamber and reverse mounted so that the magnet extends into the horn/port... KenTech, http://mywebsite.bigpond.com/dmcbean/ cheers

with this displacement I have to add cone volume to vtc, instead if it's mounted straight I have to substract all the driver displacement.

the magnet downwords, beacause eitherwise, it won;t fit.

bitzo wrote: Ibex wrote: bitzo, driver displacement is not subtracted from vtc, I expected that the driver is fireing into the chamber and reverse mounted so that the magnet extends into the horn/port... with this displacement I have to add cone volume to vtc, instead if it's mounted straight I have to substract all the driver displacement.

this is what confused me.

incidentally, im interested here because it looks like a good compact sub for a 12v system - if build it as a 12inch-er.

Any recomendation for 12inch driver to get the most bang for my buck - i dont want to make the mistake of inefficient car sub drivers again...

hold your horses

theres a new fashion for flat subs - they are only a few inches thick..

http://www.google.co.uk/search?q=flat+sub

people with expensive sports cars with nowhere for proper enclosures to go put them behing seats and whatnot..

presumably efficiency is sacraficed... dont really know. they are interesting looking things anyway..

Have you compared them to the ES18 that you were talking about. How do they sound?