I have noticed that at levels around 20 or so, the speakers have a crackle in them occasionally. I dont push the stereo to hard for this to be warranted, so i was wondering if it is a problem others were having? Also, does anyone else think the sub is weak? i think more bass comes out of the speakers in the door, anyone agree? Thanks

My speakers are fine up to 31 sounds like you have something wrong.
I'm not the one to ask about the bass from the sub woofer my last e had two 13w7 jl's in it with 3,000 watts so the sub in my 07 is just not what im used to.

Take it to the dealer. The warranty will cover it. Might just be a loose connection to a speaker...

I have an 07 and I think I would be deaf if I turned it up that high!

I had a better sub in my civic and was contemplating putting it in the SC, but where? Where is the sub located? Sorry if these are obvious questions!

In your SC the sub is just below the shifter.