Is this dangerous ?

I am trying to incorperate my 2 channel and home theater without comprmising sound .

Here is what i want to do : keep my 2 channel amp wired to the speakers as usual , the speakers are biwireable. I want to use the second binding posts on the speakers for a receiver for home theater .

Both sources would be wired at the speakers . I figure if only one source is powered on at a time this would work .probably use a independent powerstrip for each and keep the source i am not using turned off at the strip .

My main question is if both sorces would send a signal to the speakers at once what would i hear ? would it mix the two together and make some funky noise ? Would this damage the speaker ?