it wil be a large room, approx 28ft x 19ft or so.

:-D

i am progressing in the modeling,im up to getting the labsub onto paper to compare it to mine,with the folding.i reduced the 1st fold in from the mouth to cram it into necessary size :^)

at the 'horn loudspeaker forum' W H geiger has helped alot.
http://f16.parsimony.net/forum27133/

Regards
_Mike