-Two JL Audio 12W7AE-3 Subwoofer Drivers
-Two JL Audio HD750/1 Monoblock Class D Wide-Range Amplifiers
-One HD600/4 Four Channel Class D Full-Range Amplifier
These five items were bought from JL Audio for $4,689.95 plus tax.
The ported enclosure was customized to fit in my Jeep Wrangler...