Have had these in the front doors of my Chevy crew cab for about 6 months. They sound FANTASTIC! Very accurate & natural sound. Loud enough to scare my wife even though powered by OEM head unit (the 2 ohm impedance really helps here). The tweets are smooth & sparkling to my ears-very good (I set my crosovers flat on the tweeter EQ). Lots of supplied adapters for many mounting options. HOWEVER-I did not give these 5 stars because the wire terminals on the tweeters have allen set screws that are smaller than the screws in a pair of eyeglasses (1.0 or so mm, don't remember). They are so tiny that it is impossible to get any meaningful torque on them before the (supplied) allen wrench rounds the flats (partially because of the crappy metal EVERYTHING from China is made from). I have had to disassemble my door panels several times to retighten them-a MAJOR pain. I wound up buying a new wrench, putting some valve grinding compound on the wrench for grip, and using some blue loctite on the screw threads. They cannot be soldered because of the design. I have been a professional aircraft mechanic for 25 years, so all of this wasn't that big of a deal for me, but an inexperienced installer might have a problem getting a good connection. They sound so good that at this price it's worth the hassle, but it would have been SO easy to make them with some proper terminals. All of this being said I am buying another set for my son's car. SONIC ELECTRONIX SERVICE ROCKS!!!!!