Posted by Gus Pratt on January 04, 2004 at 17:14:47:
In Reply to: Re: Double-bell Euphonium posted by idea shelved on January 04, 2004 at 13:07:54:
I made my own double bell once. I used a 4 valve front action Conn for the main horn, and the bell and bows of a trombonium. I then installed a rotary switch valve that converted the use of the 4th valve from normal 4th valve use to double bell use.