Does anyone care to ask an amplifier designer a technical question? My door is open.

Would very much like your advice on what occurred to me a few days ago with my ss stereo amp.
I own a large stereo ss amp and speakers that both allow for bi-wiring. Four connectors per side and therefore I utilize two separate connectors per speaker cable per side ( four in total on each speaker and amp side). i normally connect two positive and two negative to each respective amp terminal and speaker terminal...left and right. A few days ago, I was re-inserting the amp back into the system and was NOT thinking! This time, I connected the amp correctly, BUT I connected the speakers as positive and negative connectors onto wrong terminals! So, what I ended up with was a positive connection and a negative connection X 2 ( per side) at the amp side ( correct) and a positive and negative connection for each terminal at the speaker end...one positive cable on positive, one negative cable on positive, one negative cable on negative, one positive cable on negative. This was done on both speakers!!! I powered up and noticed that I was getting signal only through ONE speaker, the right hand speaker, with no signal from the left hand speaker! What was going on??? Why signal at only one speaker with this bad connection scheme?
Luckily after much head scratching, I realized my mistake and corrected the hook up...and then both speakers were playing fine. Again, any idea as to why i had sound from one channel...and not both or any? Could I have done damage with this bad connection error?
Thanks for the reply.

Thanks. The speakers are bi-wirable at the input, so I am assuming that without a connection at the terminal, which I have removed, that there is no common connection between the woofer and the tweeter. ( it’s a two way). Nonetheless, the right speaker did play, just not the left? I also have a REL sub hooked up to the amp, it is left, right and ground at the amp, as both the amp and the REL are balanced designs. I guess I got lucky and didn’t blow one channel at the amp...or worse that and both speakers! 

Al, the ground wire(black) of the sub is connected to the ground lug on the amp chassis. Rel T5i sub and Sonus Faber Guarneri Homage speakers. The sub is connected with a three wire connection. Left, right and ground. 

Ok, what would be the difference if they are isolated vs not isolated...would this have changed the way the amp behaved...or I guess the right side speaker? 

Thanks, Al. I think that given that I had the cables crossed only at the speaker end...the amp end was wired correctly, that it is unlikely that the amp was connected as in your last paragraph. What I don’t understand, is why the right channel was playing and not the left.No signal to the left whatsoever! Only once i corrected the cabling connection error did the sound return to the left speaker...and all seemed fine.
OTOH, perhaps I hadn’t noticed if one speaker ( the left) was hooked up the way you describe in the last paragraph, Hmm.