bi-amping with Tube and SS amp

Please explain why this would not work?  If you keep the jumper and connect both amps the speaker will sense the signal from either top or bottom binding post. If OP turns off his SS amp, his speaker will only get signal from the amp that is active. 

in theory this should work. Unless the extra SS amp connection will interfere with the tube amp 

If I get what you are doing, you'll have both amps connected and one will be on at a time. The problem with that is that the amp that is not on is now a load to the other amp and you will be feeding the amp a lot of current. Probably a good way to start a fire. 

You could use a switch that uses a 12V trigger to switch between the two. 

Zory is a fireman, nothing he can't handle 

@ei001h I am not an electrical engineer, but I wouldn't connect to amplifier together with speaker cables which is essentially what this would be doing.  I doubt amplifiers have a lot of circuit protection from this type of load.