kusum65:The simple theory of power is more watts the louder it goes. Thats how i used to think any way. So on that simple understanding if youre just underpinning the main speakers and closing down the volume until you cant hear it on a sub as you would with music then low power isnt a concern. But low watts normally means lower bass
Mmm. Tricky one.
I have the MK1 rated at 50W or so. Whilst I can't claim it's the best sub out there It has been used with different systems, including AVI's 9.1 and I never found it wanting, even at high volume. In fact, the volume control is only advanced a fraction of zero.
Now, to produce deep, powerful bass you need a big driver in a big box or some sort of isobarik loading. A big amplifier helps too. These small subs are none of these. They won't make bass that you can feel in your stomach but then your neutrons and most domestic speakers don't produce soundwaves that pin you back either. These small subs just subtly enhance what's already there, perhaps extending it slightly but the difference is surprisingly large.
As regards to setting one up, you're right there. Ideally you should not be able to identify the subwoofer as a separate, working entity but as Igg said, it's a bit of a dark art, or more to the point, trial and error. What it does give you is flexibility and a more room friendly alternative to big boxes in each corner, which can have their own drawbacks though as I've mentioned before, I used mine with floorstanders from several manufacturers too, to good effect. Good luck.