I had my system done and I can notice fan noise from the 6600 when the volume is real low. I don't plan on keeping the volume real low too often, but I would like to know if this is normal. Thanks.
Larry

Wow, I never heard of fan noise on any double din.
This is good to know because I am planning on putting this unit as well.
Did you have to modify to play dvd's. If so, how or can you explain what you did, thanks.

There is a modification they do to allow you (I mean your passenger) to watch dvds while driving, the shop that installed my system knows how to get around this. From what I understand, it's just a matter of grounding a certain wire to a certain spot.