Hey,
Panos tried to discuss this matter in 2005 in this thread:
http://www.audioheritage.org/vbullet...s-reflex/page2
Anyway I found this thread searching for info.
At the moment I am designing a midbass horn with small dimensions due to lack of space. I have a pair of 150Hz Lowther-style Tractrix-horns standing in my garage, the
are the same type as Bo Hanssons at Opus3:
I have also a few 414-8A in my stash to be mated to the horns and a bassreflex. Due to the Altecs qualities we shouldn´t expect to high upper rolloff. Shelving, like in a fullrange, shouldn´t be a problem as the BR only fills in just where the horn starts to fall.
The upper rolloff shouldn´t be a problem together with 2482 in these horns(note the driver at the bottom), also in the upper right corner you get a glimps of the midhorns:
This is a sim of the horn, box is 40dm3. Note, it will be big compromise even if the design could be bettered:
My friend Hoktuna has built 816´s and together with 416 he is quite satisfied with them used as mids down to 100Hz. Also with the same midhorns as I have.
Is there anyone except Panos29 who have tried the concept any tests? We can forget anything but midbass-systems.