I have 3 18" Skar Audio v2 subwoofers inside of a custom built birch enclosure that is double baffled and internally braced. Knukonceptz 8 gauge speaker wiring. The speakers mounted on the box are 2 Rockford fosgate pro 8" and 2 Rockford fosgate t1 4". The box is wrapped in camel colored fleece. The amp that is included is an American Bass VFL 500.1 SPL. Puts out over 5600 rms watts clamped and over 11200 watts peak. Call or text for more info.