By Gadget- "The Infamous One" from Norfolk, Va. on 6/10/2007

For the money, these subs are an overall good value. These were purchased for permanent installation & ceiling mounted. As a rule I usually avoid 15" woofers for subwoofer applications, so I was reluctant in choosing a double 15" system. These weigh in at 120 lbs. which for a double 15" system is not bad, and they move easily with 2 people. They also had to be delivered by truck due to weight (which I knew about) & since these were purchased via credit card, I could not have them drop shipped to the venue even though these were a business purchase.
Asa for sound quality, these are mounted 12' in the air & are mated to 4 of the Nady MC-8 speakers also mounted 12' up. One issue: the specs state these are 4 ohm cabinets, but the label states they are 8 ohms. Without opening them up I'm really not sure, and this is critical if I plan to bridge my amp to run them as it's not 2 ohm stable. They have an overall good sound but as with most double cabinets, they need a healthy amount of power to run efficiently, otherwise they "bottom out" prematurely. The biggest issue I have is that these have screw-down "Binding posts" which I was surprised to find on a subwoofer due to vibration at high levels, which is nightly for me. I ended up changing my connection from 1/4" plugs to the binding posts to keep them from vibrating. Neutrik connectors would help here, and the plastic handles are somewhat clumsy. As these are permanently installed this is no big deal.
Overall these are a good buy, but make sure they match what you are going to use them for.