About the Alpine S2-W12D2 Great bass for less For the best in bass, you need the best in materials and engineering. Alpine's redesigned Next-Generation S-Series subwoofers apply technology from their higher end subs to bring you the depth and punch that'll make your tunes come alive. With high-tech materials and Alpine know-how, these subs deliver the lows you crave at a budget-friendly price. Redesigned for better sound The S-W12D2 12" sub handles up to 600 watts RMS, so you can drive it hard without any worries. The redesigned cone combines carbon fiber and polypropylene for light weight and sturdiness, while its rubber High Amplitude Multi-Roll (HAMR) surround enables maximum excursion for impressive performance. Handy jumpers make it simple to switch from 1-ohm to 4-ohm impedance to adapt to your system. This sub is equally suited for sealed and ported boxes, so you can enjoy your bass big and boomy or tight and precise. A twist-lock mounting system makes it easy to add one of Alpine's specially-designed speaker grilles (sold separately). Product highlights: 12" subwoofer with dual 2-ohm voice coils carbon fiber/polypropylene cone with HAMR rubber surround frequency response: 23-215 Hz power handling: 600 watts RMS (300 watts per coil) peak power handling: 1,800 watts sensitivity: 85.7 dB top-mount depth: 5.05" mounting height: 0.95 sealed box volume: 0.61-1.2 cubic feet ported box volume: 1.06-1.6 cubic feet grille not included warranty: 1 year MFR # S2-W12D2 Item # 500S2W12D2 California customers: Please click here for your Proposition 65 WARNING. What's in the box: If you need assistance accessing this owner's manual, please give us a call. One 12" Dual 2-ohm voice coil subwoofer Trim ring (installed) Two 3" jumper cables (each has a single banana connector on each end) Subwoofer Application Guide (English/ French) On-line product registration information (English/ French/ Spanish) Warranty information (English/ French) Important Notice! (English/ French) Features & specs Features and Specs Size 12-inch Impedance (Ohms) 1, 4 Cone Material Carbon Fiber/Polypropylene Surround Material Rubber Basket Material Steel Grille None included Free-Air No Dual Voice Coil Yes Sensitivity 85.7 dB at 1 watt Frequency Response 23 - 215 Hz Max RMS Power Handling 600 Peak Power Handling (Watts) 1800 Top Mount Depth (inches) 5 1/16 Bottom Mount Depth (inches) N/A Cutout Diameter or Length (inches) 10 5/8 Frame Width 12.5 Frame Length 12.5 Vas (liters) 55.1 Fs (Hz) 26.6 Qts 0.43 Xmax (millimeters) 15 Parts Warranty 1 Year Labor Warranty 1 Year Box Requirements Ideal Sealed Box Volume (cubic feet) 0.85 Minimum Sealed Box Volume (cubic feet) 0.61 Maximum Sealed Box Volume (cubic feet) 1.2 Ideal Ported Box Volume (cubic feet) 1.51 Minimum Ported Box Volume (cubic feet) 1.06 Maximum Ported Box Volume (cubic feet) 1.6 Port diameter (inches) N/A Port length (inches) N/A The Alpine S2-W12D2 replaces these items: Alpine S-W12D2 Features Progressive Spider: The progressive spider has reinforced layer tinsel leads to ensure reliable and consistent control of the tinsel leads and eliminate any mechanical noise or interference often seen in high excursion cone designs. Compound Radius Curve Pole Geometry: Alpine's Patented Compound Radius Curve extended pole geometry ensures a symmetrical magnetic field, while optimizing flux density to reduce distortion and further improve power handling and output. Dual Voice Coils: For system flexibility, the woofer has two 2Ω voice coils. When the voice coils are wired in parallel, the woofer presents a 1Ω load. When the voice coils are wired in series, the woofer presents a 4Ω load. Spring Terminals: The spring post terminals are all located on one side of the woofer. The terminals will accept pin connectors, single banana plugs, or bare wire up to 8-gauge. Jumpers: Included with the woofer are two voice coil terminal jumpers. These jumpers allow you to easily wire the voice coils in parallel (for a 1Ω load) or series (for a 4Ω load). Enclosure: Sealed Box: Alpine recommends a sealed enclosure with an internal volume between 0.61 and 1.06 cubic feet, with an ideal volume of 0.85 cubic feet. Sealed enclosures provide the most control over a woofer, will handle a lot of power, and provide accurate sonic reproduction, making them suitable to all types of music. Ported Box Volume: The recommended ported box volume ranges from 1.06 cubic feet to 1.56 cubic feet, with the ideal size being 1.51 cubic feet, using a slot port measuring 12½" (W) x 1" (H) x 16" (L).
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