Scott,
The other thing you could try is to take a "Y" adapter of 2 1/4" males down to a single female 1/4". So you would mix L&R out of the 2k into a single female and then plug to your speaker.
A ring and tip / send return Y will do this.
jam on,
Terry
[This message has been edited by trtjazz (edited 11-13-2002).]