Resilient Sounds Single 15" Gold v2 Ported Enclosure 12 inch subwoofer 7Xi was made for amplifiers

7Xi was made for amplifiers but can be used in factory settings with 4-ohm factory amplifiers in most cases for great sound and clarity over factory OEM speakers

S/N Ratio (ref: rated power): 107 dBA

Size 12" RMS Range 300w-1000w (500w RMS Ideal)  Peak Power 1600w Cone Textured Non-Pressed Pulp with Resin Voice Coil 2

Engineered specifically for the DC Audio Level 4 10" subwoofer

Resilient Sounds Single 15" Gold v2 Ported Enclosure 12 inch subwoofer 7Xi was made for amplifiersResilient Sounds Single Gold v2 15" Ported Enclosure 3. 5 Cu Ft @ 32Hz Engineered specifically for the Resilient Sounds Gold v2 15" subwoofer, this enclosure delivers optimal airspace and tuning for deep, controlled bass response. Enclosure Specifications: Net Volume: 3. 5 cubic feet Tuning: 32 Hz Port Area: 50. 38 sq in Port Size: 15. 502" x 3. 25" Cutout: 14. 236" Construction: 3 4" (18mm) Russian Baltic Birch 13 ply Baffle: Solid 1" (24mm) front