This Package Includes the Following Items:
1 x Car Audio Single 12" SPL Bass Subwoofer Labyrinth Vent Sub Box Stereo Enclosure
1 x Alpine S-W12D4 Car Audio Type S Series Sub Dual 4 Ohm 1200W Peak 12" Subwoofer

Car Audio Single 12" SPL Bass Subwoofer Labyrinth Vent Sub Box Stereo Enclosure:
Features:Single 12" Vented Sub Box
Mounting Depth: 12-1/4"
Air Space: 1.75 Cubic Feet
Vented Enclosure
Dimensions: Width 18-1/4" x Height 15-1/2" x Depth 16-1/2"

Vented design allows for maximum output
Constructed with High Quality MDF
High Quality Binding Terminal Cup (Accepts Banana Terminal Plugs OR Bare Wire 'up to 10GA')
High Quality Gray Carpet

Alpine S-W12D4 Car Audio Type S Series Sub Dual 4 Ohm 1200W Peak 12" Subwoofer:
General Features:12" 4 Ohm Type-S Series Subwoofer
Power Handling:Peak: 1800 watts
RMS: 600 watts

Recommended power range: 250- 600W RMS
Pulp/Kevlar Cone
High Amplitude Multi-Roll (HAMR) Surround
Progressive Spider with Reinforced Layer Tinsel Leads
Airflow Optimized Dual Flare Pole Vent
High Strength Steel Frame Basket
8 AWG Push Terminals with VC Configuration Jumpers
Dual Voice Coil
High Grade Strontium Ferrite Magnets
Top-mount depth: 5-1/16"
Cutout diameter: 10-9"
Frequency Response: 26- 200Hz
Sensitivity: 86.4dB
Resonance Frequency (Fs): 31 Hz