Got a new JL Audio bass knob that goes to 50 Max and I have a 6 JL Audio 20's and a badass Mono Block with 7,000 wats setup this way, but mine has a custom case.
Now I listen to this song 50 Maxed and the volume powered up.
[video=youtube]http://www.youtube.com/watch?v=7FiDUlcdp4k[/video][/CENTER]
[video=youtube]http://www.youtube.com/watch?v=7FiDUlcdp4k[/video][/CENTER]