This is the 3rd pair of speakers I have put in the rear of my G1800. They are the best ones I have put in to date. Much improved bass and volume compared to the previous 2 pairs I have tried. All the speakers have been driven off a kenwood 100 watt amp. An added benefit was that no modification was needed to install these little jewels. Previous speakers used were jm audio which were an easy placement but I wasn't satisfied with the sound and Sony exploid which I modified to fit the housing.