Posted by Lew on August 16, 2002 at 16:43:20:
In Reply to: Re: Re: Conn 20j S/N? posted by ED on August 16, 2002 at 16:27:04:
You can tell the short action valves by the oval valve ports. If any of the ports in the valve are oval rather than circular, they are short action. With 4 valves it would be a 24J with a recording (front) bell or 25J with an upright bell. If they are not short action valves it would be a 34J. I find these horns to be open playing and responsive, but they do take a lot of air. If you try to play them without enough air volume they won't respond quickly.