Summary: As a mobile DJ who averages nearly 120 events annually, I love my KW181. I've had the first one for a little over three years, and it has a six year factory warranty. I didn't purchase it from Amazon (I have a friend who is a dealer), but since I'm always shopping on Amazon, I wanted to share my opinion with others. It has clear sound, and really adds quality to your audio.
Summary: A DJ "MUST HAVE"!! If you are a DJ just starting out, resist the temptation to buy one of those $700 active subs out there. Also don't buy the K-SUB for DJ use- it is not enough (learned that the hard way). After approx. 100+ faithful gigs on my KW sub in every possible situation (generator power, bad power, on boats etc...), last month I had a drunk person spill a full drink down the back of the sub- the sub "blew-out" and stopped working.