I've had these for about 6 months now. They have filled every venue so far with really nice tight low end. I play in a classic rock band so our needs are different from a DJ playing bass heavy program material. We are not even pushing them, but for a DJ, you may need to look at 18's. I like the weight of these cabinets a lot, and the sound is really smooth. We use these with a pair of 12" ZLX cabinets and a Behringer XR 18, all bought from Sam Ash in Tampa. Great products and service.