Yes, it only has speaker-level inputs.
However, it doesn't have pairs of them- only a single left/right. If I 'continue' the wires to the sats, won't that drop the impedence to 4O, since I'm making the connection parallel?
I'm guessing I have to power the sub with a 'B' connection on my amplifier. That seems odd- do all amps have 'B' connections?
Here's a picture:
(I'm selling them locally, but want to explain how to hook them up)