ChriSS K
Junior Member
I have an 08 envoy denali with the bose premium sound without DVD/Nav. I'm looking to keep the factory HU since I already added the IPOD adapter. I'm going to add aftermarket speakers and an amp such as a JL 300 or something? The speakers could either be a set of JL seperates up from and a set of coaxials in the rear. I could also maybe do polk DB's?? Either way how does this JL cleansweep work really well to clean up the voltage to the amp since this owould be prviding me with my preamp outputs? Also do I HAVE to do the summing device? Advice??
