TubeNet

In case anybody is interested, here's what worked for me.
Some will say this is overkill; others will say it is insufficient.
(It all depends on how far you plan to drop the package.)

http://www.galvanizedjazz.com/tuba/BigConn.html

Hey Art,
I'd be really interested in knowing how you made this horn and what you used to do it. I read the part about conn sousaphone valves, and I'm hoping you'll expand on this. Thanks. Peace. Arnold S. Gottlieb