TubeNet

I don't know much, but seems affordable and certainly there are folks here who could help with info or maintenance...

http://cgi.ebay.com/CONN-15J-300419-UPR ... 817wt_1167

Good horns. Note that Conn no longer builds this model and only has limited parts availability. What Conn/Selmer/Steinway/Whatever calls a 15J these days is actually a King 1240. Ordering parts for a 15J will get you the wrong parts. If you buy this horn and need parts.... I think I have two parts horns. And no... the pistons won't interchange with the 4J or 5J.

This particular version of the 15J is/was a convertible horn. Swapping the leadpipe for a marching pipe and reversing the 1st and 3rd slides put it into marching configuration.

BTW, Brassdad.... you made a double post. You might delete the OTHER one to avoid confusion.