[xero]

hello all,
i have be interested in open baffle speakers for some time and i a m considering building some H-frame open baffle bass units.
so here is my question.  when you look at  voice of the theater bass units they sometimes have a horn type flare. why have we
not seen the same type of flare built into an H-frame?

thanks in advance
E

[TRADERXFAN]

Well, I am not sure what exactly that speaker is, but sounds like a horn loaded speaker, so the horn flare would be the mouth of the horn.  The H frame is completely different in that it doesn't use compression as its open baffle. Baffle width would factor into off axis cancellation frequency. 

[xero]

wolf von langa has produce something similar to what i am thinking.

here is a link to his design.  this is an open baffle dipole bass with wave guide.  all drivers are field coils!

http://www.hqspeaker.com/cabinets/a820i-design-model-2.html

[JohnR]

This is another one that seems similar (posted in Open Baffle circle):

http://www.audiocircle.com/index.php?topic=112246.0

[xero]

yes, i have seen these before but forgot about them when i posted my example.
the other question that i have is that in these designs the woofer is partially covered
by the wave  guide.  why is that.  why not make a curve in the waveguide so that
all of the driver is exposed.  just curious.....

thanks again