I don't know, but my K & N 900 watt 17 speaker blew one of my windows out and I thought that was enough. Use to J B Ls and Marantz speaker's, amp, pre amps 1000 watts. This system seems to be doing very well not over dong it with the power it as to offer. My vettes had JBLs and did very well. The K & N has dual 8 inch dual woofers with a 12 volt full size battery with no room for a battery. No room for a spare tire or jack. Just a tire pressure gauge and accessories. That was enough. Still have the car,,, having the engine painted,, and 800 h/p out runs El Ric's Red Eye and like Rico's Red Eye and him. Not too many Demons around. Hogans and that's about it.