Two amps to one speaker

Thanks for the responses.  Al, I was pretty sure I knew the answer was don't do it, but I couldn't give an explanation as you did -- now I understand why I shouldn't do it.

Except for Oppos, I buy almost all my equipment used, and that's true of the Clear Day speaker cables. They're a bit longer than I want, so I think I'll have them cut into four pieces, each with spade-to-amp and banana-to-speaker termination.

BTW:  Ayre C-5xeMP, K-5xeMP, VX-5 Twenty to KEF LS50s delivers fine sound.  I supplement the LS50s with a pair of Velodyne HGS-10s, low passed with a 100-Hz card by a Beverage RM-3.

Sounds like a very bad idea good luck though!!

Here’s a very recent thread with some suggestions

https://forum.audiogon.com/discussions/a-rookie-question-re-two- amps-one-pair-of-speakers

The above link was only good for switching between two solid-state amplifier, to switch between a tube amplifier and solid-state amplifier, there was a thread discussed two years ago:

https://forum.audiogon.com/discussions/speaker-switch-that-protects-tube-amplifier

I've decided that each amp will have its own speaker lead, terminated at the speaker end with a banana plug.  When a particular amp is in use it will first be connected to a speaker and only then powered up.  So at no time will two amps be connected to any speaker, nor will any amp be powered up without first being connected to a speaker.  I certainly don't want to put the Ayre VX-5 Twenty nor the Cary 572 SE monoblocks at risk. 

db