Hello all! I haven't posted in quite some time, but I wanted to inquire about an issue I'm having with upgrading my stock Alpine system with a Digital Signal Processor (Rockford Fosgate DS1), T- Harness, 5-channel amp to power 2 pairs of Pioneer D-series component speakers and an 8" Pioneer sub in the factory box. After talking to Crutchfield they said I could have the upgrade installed and still utilize the center channel speaker (3.5" tweeter) by having it powered by the factory amp. After taking it to a local installer, they said I would have to lose the center channel speaker when using the DSR1 interface for an aftermarket amp. Otherwise I would have to buy a 6-channel amp, which is hard to find, then go through the rigmarole of returning the 5-channel amp, and waiting to have the 6-channel come in only to power the center channel speaker when my 2 pairs of component speakers will likely be sufficient. Now I've heard that the center channel speaker runs a mixture of L and R signals, and when tinkering with the radio balance L<>R it seems as though the center channel speaker is substantially louder than the corner dash speakers, hence, why I thought it would be beneficial to have a center channel speaker installed. So I guess my question is, does this local installer know what he's talking about, or is Crutchfield's stance on being able to wire the center channel off the factor amp skewed after installing the DSR1 interface? Any help or suggestions are appreciated! Thanks!