I have a set. They are rated 500 watts each. So you must have a serious amp to drive them. A regular car receiver will not do it. I matched mine with a Lanzer, Max Pro 2000 watt 2 channel amp. With ported 6X9 boxes bought from Sonic. Do not worry about the wattage. These speakers will take anything this amp can throw at them. Provided you do like me, and do not run the gain up on the amplifier. I run mine "all the way down". I simply like the amp head room. I supply double power to every speaker I drive. It produces crystal clear clarity even in a ported box. Most people's system's cannot compete with the clarity of system's that I build. These are no exception. Massive Mid Bass. Find out what your Sub has been denying you. My sub is set at 60 HZ and is clean. with these added 6x9's it sounds as if I added two other subs to the system, Due to the Mid Base Response of these 6x9's. When I say Massive Mid Base, I mean Massive! I am going to add another set, and amp to my Freightliner Truck. To give you an idea of the mid base. The sub can't even compete with one of these 6x9"s for the DB gain, of mid base added by one speaker. And I have a 12" Sony Sub that hit's like a Freight Train. People can't belive I only have one sub in the truck.