I recently completed a test box built from the 1952 Jensen folded corner horn plans. This is not the Imperial horn, but a generic horn that offered two different vertical dimensions. One at 36.5" tall for a 15" driver, or the other at 27" tall for a 12" driver. The only mod I did was to make the box 23.5" wide. Since it is a corner horn, the "wings" are redundant. Doing so made it less intrusive also.

This is not the Ultra-flex or Tri-flex box, but a folded horn, although I haven't mapped out the cross section to determine if it is a folded horn, or a long horn loaded vent. I loaded the box with the Jensen G610 Triax as Jensen did, and the system sounds remarkable. The bass is tight, punchy, and articulate.

Any thoughts?

http://yras.users.photofile.ru/photo...e/97847643.jpg