gcclubs

I was wondering if any one has changed the factory amp that comes with the M490 option to something with more power and adjustable crossovers. I assume that the door speakers, which I understand are basically for base could have their cross over adjusted so that more was going to them then just bass? Currently it seems like they are doing virtually nothing. Even with based turned up full.

I prefer not to have to start changing speakers etc but will if necessary. What sort of replacements have people used? Is the exchange difficult