4 15" Solo-Barics in a ported rhino-lined box. With 1 set KS693, 1 set KS525, 1 set KS25, and 2 Power Acoustik BAMF 4000/1 amps. All in a single cab Dodge Ram 1500. (Yes, I know the amps are wrong for this setup. I'm getting 2 Kicker ZX2500.1 soon.....) I originally had 4 10" Kicker CompVR's behind the seat. But I had to go bigger and louder, and I do believe I succeeded.