Q-Logic Custom Enclosures models ending with "LD" are Pre-Loaded with Rockford Fosgate Subwoofers.  All you need to do is connect an Amplifier and you're up and running!  Save Time and Money and Order "Loaded Versions" of your Custom Enclosure.

Product Code: NTTNK04-T45 Price: Check Latest Custom MTX Thunderforms Enclosure NISSAN KING and CREW Cabs - 2004-2008 FREE SHIPPING* on MTX Thunderforms *Free Ground UPS to lower 48 states Available Colors Amplified Version Available Available Loaded with MTX Sub/Subs also Note: Thunderforms available in three versions.  See Title above for this specific purchase   Model #: NTTNK04_20   Dual 10" Enclosure Features: Mounts Under rear bench seat (jack stays in factory location) high-density polyethylene enclosure Colors: Charcoal and Gray Install hardware supplied Subwoofer: two 10" Dimensions: 9" H x 53" W x 12 1/2" D Volume 1.75 cu ft Sealed UNLOADED - NTTNK04_20U LOADED W MTX SUB - NTTNK04_20-T45 AMPLIFIED W MTX SUB - NTTNK04_20A-T45