We use these at or carshows in hot sunny Florida for the past 3 years. They still sound great to this day. Best features is on the back panel you can connect to almost anything even an iPod via a $6 wire jack. or a mic or daisy chain them in a series. Hands down just a good rugged product. Only negative there around 50 lbs but hey there powered speakers and have amp built in 4 stars. so they weigh more. And 4 stars overall cause lets face it theres better speakers out there. but not at this price. i got more than I payed for with these so there a great buy at this price. and yes they sound great and i have Makie Thunder 15's and Yammaha 12's both powered and they rank close but here again these were alot cheaper. and this is running from a Numark cdmix 1 or my icdmix2 Numark.