Hi, I was wondering where exactly are the 2 extra subs. I can count 11 speakers but I read somewhere that the 2 subs are an option eventhough one may have the premium SC902 with surround sound. I can't tell by listening because it has nice bass however, I want more bass sometimes. I heard that the 2 extra subs can be switched off also. I can't find any switch and I can't see any subs behind the back seats where I read would be located. And what if I want to add 2 subs? Would that be easy cause it was already set up! Thanks

The subs are in the seats (actually inside the seat that is why you wont see them).rear seats i believe they are either 10s -8s. I am not sure if you have the dyno audio pkg. the amp is under the front seat i think. or driver side in the trunk you might have to remove the cover. Not an easy unit to work with. i would consider speaking to a pro to install. It is a pretty complex design. Would recommend connecting 2 sub to exsisiting amp because you won't get the bass responce you are loooking for. You will need to push an other amp to run additional subs.

Thank you for your input. I actually found out that my car didn't come with the extra option 2 subs because I based it on the fact that there is a switch to turn those subs off and I was looking at the manual and locate where the switch which in my case, is replaced by a place holder.