If the Yamaha HTR-5760 has this specifications: Built-in 7-channel power amplifier Front: 95 W + 95 W Center: 95 W Surround: 95 W + 95 W Surround back: 95 W + 95 W This Yamaha receiver model has switch in the back to flip between 4 or 8 ohms speakers. Although I have read somewhere to not use the 4 ohm setting. And I'm running this with: Front: Polk Audio LSi7 (4 ohms each) Center: Polk Audio LSiC Surround: Polk Audio LSi7 (4 ohms each) Subwoofer: SVS PB1-ISD Does this mean I'm getting 47.5 W out of each speaker? If so, will this be enough for home theater setup for mostly movies? How will this effect if I'm only setting up a 5.1 and not a 7.1? Thanks in advance.