I am planning on buying a set of Diamond hex s500's...i currently have a set of 5 1/4 and 6x9 clarions in my car running off of the JL 500/5....the sq of these coaxals basically suckazz...so I am buying the Diamonds...but I need a suggestion of possibly replacing the rear 6x9's or keeping them and what should I replace them with that will coincide with the setup I have. Take in mind the rear channel on the JL 500/5 is 25 rms.