It's small Thomson speakers, only says the impedance on the back, nothing else. Yes I have a subwoofer and I can set the speakers to either "small" or "large" which has to do with low frequencies being passed to the sub.
I have a 6.1 home theater amp ( centrum titan 500 ) That's rated at 8 ohm. Would it work If I'd connect 5 speakers at 6 ohm each? Would that cause any strain or harm to my amp?