[HummerNewbie]

I personally would add the sub if I got the system without it. I have been into car audio for many years and used to compete. I am not that a-hole next to you at the light rattling your windows or driving through your neighborhood at 2AM though. I love a crisp, clean and full sounding system. A sub, even an 8" just adds so much to the overall sound and it doesn't have to be turned up to be a benefit. I would like to find out about possibly bumping the factory sub and enclosure up from an 8" to a 10" but no bigger than that.