Do the M80's need an Amp to push them? We really enjoy watching normal tv through our surround and this is usually done at lower volume levels. Also, with me having two kids under the age of two, I was wondering how they sound at lower levels? I've read that they need to be up at a half decent level before they come alive.

Receiver: Yamaha RX-V2200
Main: Axiom m80
CC: Axiom VP150
Surround: Axiom QS8
Sub: SVS PC13-Ultra