I received the single sdr 12" loaded enclosure in excellent order and earlier than promised. I am extremely pleased with the purchase and quality of product in phenomenal. I have it hooked up to a Skar RP600.5 amp and with the TX series 6 by 9s from a previous order, I have to say that the speakers and amp are not only a great combination, but they are load and clear. By far this setup is a powerhouse of crystal clear sound quality and enough power in the bass to make your ears ring. I highly recommend any purchase one may be considering from Skar and you can bet that I will continue to buy from them because their products deliver what they advertise.