Rockford Fosgate T1S-1X12: Power-Series 12" T1 Sealed Enclosure

Handles up to 500 W RMS:

At a little over 6" deep, this Enclosure will go behind a lot of seats.

Rockford Fosgate has earned a reputation for building superior subwoofer Enclosures, and the T1S-1X12 Sealed Enclosure exemplifies their expertise.  This Sealed Enclosure houses a Power-Series slim line 12" subwoofer that handles up to 600 W RMS, for maximum bass from a minimum of space.  The truck style Enclosure is only a shade over 6" deep, so it'll fit behind a truck seat and in other tight spaces, while its 1 ohm impedance draws maximum power from your compatible mono amplifier.

Made from 5 / 8" MDF:

Rockford Fosgate took care to build the Enclosure to last, through a cabinet constructed of 5 / 8" MDF that's protected by industrial grade carpeting.  It'll stand up to the knocks of life on the street and come back for more. If you've got the room, Rockford Fosgate's ready to bring on the boom.

Important note: you'll want to make sure that your amplifier is compatible alongside this sub's 1 ohm impedance.  Most mono amps are stable down to 2 ohms, so check your amp's manual.