Posted by trolling... on April 02, 2003 at 14:13:33:
In Reply to: Re: Re: Re: Re: bass bone posted by Mary Ann on April 02, 2003 at 14:07:11:
Independent valves can be used independently. an F attachment and some other interval (it varies).
Dependent horns have an F attachment and then a second rotor in the tubing of the F attachment.