Quote Originally Posted by kexodusc
What do you mean "surround speakers"? Ideally you want the same speakers as your front mains, or smaller versions of them, say from the same product line. So whatever RB-series speaker is available. Of course budgets and real world factors can play a limiting role in this...
Surround speakers are shaped differently than conventional speakers, for one thing. Instead of having one 'face' of components, i.e., one woofer and one tweeter facing one direction, surrounds have one woofer and one tweeter facin. RR6 put a link to one of them in his post in this thread--it's the one that ends in rs-35.aspx.

I didn't know that ideally I should strive for two pairs of the same speakers for a 5.1 setup. Though in retrospect it makes sense that you'd want to have equal speakers so as not to have the fronts overpowering the rears, for example.