I doubt i could slim it down without re-doing it all and getting different subs. I've got two RF power HX2's which weigh a ton. And yes,it's the loudest car stereo i've ever heard. I'm sure, of course, there are louder ones though. It makes TV monitors in buildings(ones you can see inside at night) bounce up and down(the picture). Obviously from very high SPL. I guess you can't have loud and fast at the same time.