How good are Q power subwoofers?

How much power would I lose running passive subwoofers through my front channel?

• How much power would I lose running passive subwoofers through my front channel? I have a Sony STDRH700 Receiver that 105 watts x 7 channels, at 8 ohms; two NXG NX-W8SUB passive in-wall subwoofers that are 150 watts, 8 ohms; and two 150 watt 8 ohm in-wall front speakers. I would run the front channels out to an impedence matching 150 watt volume control, and then out of the volume control to the pair of passive subs and then through the subs to the front speakers. Let me know what you think. Will I absolutely need an additional amplifier or any other gadgets? Is the volume control gonna actually improve anything? Im not looking to blow anyone away with this system, just to have enough bass to make movies and sports sound good in my family room thats 12' x 15'. Thanks

• Answer:

  While it would probably work I don't think it wouldn't work well enough for you to be happy. Total power for the front speakers would be divided between the subwoofer and regular speakers making both inefficient. If possible it might be a better idea to build a crossover network that would send just the very low frequencies to your subwoofers and all the higher frequencies to your regular in-wall speakers. This would allow all of the power from your amp to be delivered to the appropriate speakers with none of the power wasted.