I recently installed an used stealth box with an upgraded JL sub in my '03 vert. My amp is a JL 300/1 that is tied to my stock Mach 460 system. I have been adjusting on the crossover trying to get the sound I want. I listen to rock music and want pounding bass like you would here at a rock concert not the booming bass I am getting out of it. Is there anyone with a similar setup that could share their crossover settings or help me go in the right direction with my adjustments. I haven't had subs in my car since the late 80's and have never had a crossover that was built into the amp. Any help would be great.