Steve Schell
01-16-2007, 01:22 AM
I have been building horns as a hobby since 1992, and recently as a business. These bass horns were one of my more successful hobbyist projects. They were built in 2000 and were mainstays in my system for at least three years, something of a record. I have since gone on to build mid bass horn/compression driver systems as well as really large 20 to 80Hz. horn subwoofers. These bass corner horns have been mothballed for several years now, but I recently had the opportunity to put them back together and use them again. It has been a rewarding experience.
They are a pure exponential design with a 35Hz. flare constant. Their response is very good from 40 to about 400Hz, and sound like they go lower than they measure. They feature a very solid, powerful, clean bottom end, the sort that people unaccustomed to good front loaded bass horns often find shocking on first listen. I was pleasantly surprised at how well they perform when I got them going again. Dr. Bruce Edgar once told me that he thought these were the best bass horns I ever built, and that I "got lucky" with this design. IMO these units exceed the performance of the Klipschorn bottom end by quite a bit, due to the 10' path length and single 90 degree bend.
They are built in upper and lower sections; the joint is hidden by the midrange horn in the picture. The bottom section disassembles for easy moving. They are about 7'9" tall. They can be assembled on the floor and raised into position if your ceiling is at least 8'3" as mine is. If not they can be assembled standing up with a helper.
Each horn is driven by a single 15" woofer, installed in the sealed back chamber near the ceiling. The triangular shaped expanding throat section makes a 90 degree bend at the floor to the mouth which measures 18" tall by 69" wide. The mouth is extended by side walls and floor if one has good corners (I don't), creating an unusually smooth transition between horn and room.
With heavy heart I must sell these, as I no longer have room to store them; they must make way for my current development efforts. They are built from 3/4" baltic birch plywood and 3/4" preformed curved plywood. Some aspects of their construction are a bit crude. I always intended to clean up the woodworking a little and apply a finish, but never got a Round Tuit. I am asking $500 for the pair, which is less than I have into the materials. A freshly reconed pair of 1950s Stephens Tru-sonic woofers is currently installed and performing very well. They can be included for an additional $300 if the buyer prefers. Any interested parties in southern CA are welcome to contact me at (562)421-5145 for a listening session.
Here is a picture I took back in 2000; they still look the same.
They are a pure exponential design with a 35Hz. flare constant. Their response is very good from 40 to about 400Hz, and sound like they go lower than they measure. They feature a very solid, powerful, clean bottom end, the sort that people unaccustomed to good front loaded bass horns often find shocking on first listen. I was pleasantly surprised at how well they perform when I got them going again. Dr. Bruce Edgar once told me that he thought these were the best bass horns I ever built, and that I "got lucky" with this design. IMO these units exceed the performance of the Klipschorn bottom end by quite a bit, due to the 10' path length and single 90 degree bend.
They are built in upper and lower sections; the joint is hidden by the midrange horn in the picture. The bottom section disassembles for easy moving. They are about 7'9" tall. They can be assembled on the floor and raised into position if your ceiling is at least 8'3" as mine is. If not they can be assembled standing up with a helper.
Each horn is driven by a single 15" woofer, installed in the sealed back chamber near the ceiling. The triangular shaped expanding throat section makes a 90 degree bend at the floor to the mouth which measures 18" tall by 69" wide. The mouth is extended by side walls and floor if one has good corners (I don't), creating an unusually smooth transition between horn and room.
With heavy heart I must sell these, as I no longer have room to store them; they must make way for my current development efforts. They are built from 3/4" baltic birch plywood and 3/4" preformed curved plywood. Some aspects of their construction are a bit crude. I always intended to clean up the woodworking a little and apply a finish, but never got a Round Tuit. I am asking $500 for the pair, which is less than I have into the materials. A freshly reconed pair of 1950s Stephens Tru-sonic woofers is currently installed and performing very well. They can be included for an additional $300 if the buyer prefers. Any interested parties in southern CA are welcome to contact me at (562)421-5145 for a listening session.
Here is a picture I took back in 2000; they still look the same.