I have understood from helpful users on the forum that a subwoofer would greatly enhance the sound quality of my KN5000. Can someone plaeas advise me of what to look for. i.e company and specs.

I would love to get something "smallish" not one of those heavy bulky things. I would also like to buy it second hand off ebay so if smeone can be kind enough to supply older models which would be easier and cheaper.

THanks.

Oh, one more question, does the subwoofer cut out my onboard speakers or is it just an add-on.