i thought it was about time i added a subwoofer to to my system. i have a single phono on the sound processor for the sub.
im guessing its a pre-out for a actve sub ?
so my question is..can i use any size sub as regaurds to wattage.?
If your "sound processor" has a subwoofer output, you can connect any powered subwoofer to that output. Connecting a sub is usually pretty straighforward; the more important element is integrating that sub into your system.
Sorry, I'm not sure what the point of post #3 is. Picking the sub is fairly straightforward: Determine your budget and other requirements (size restrictions, aesthetics, etc.) and look for a well-rated sub that meets them. Buy it, hook it up to your processor and then integrate it into / calibrate it to the rest of your system.