About the Alpine R2-W10D4 Maximum bass output With over 40 years of experience, Alpine has the know-how to deliver the kind of hard-hitting bass you want. The R2-W10D4 10" sub capitalizes on this knowledge with a new motor structure with double-stacked magnets for deeper bass and tighter sound. Its Kevlar-reinforced pulp cone features a durable HAMR Santoprene™ surround that allows for huge amounts of excursion, and an oversized poly ceramic dust cap supplies rigidity to keep the sound tight. It's the perfect sub for bassheads that want the best of both worlds: accurate response and otherworldly thump. A versatile performer The R2-W10D4 handles up to 750 watts RMS, so it's ready for your high-powered amp. Its dual oversized 4-ohm voice coils offer wiring flexibility for multiple subwoofer setups. Since it works well in sealed or ported enclosures you'll enjoy your music the way you like to hear it. Note: If you are wiring this DVC sub for lower impedance, make sure that your amp is compatible. Product highlights: 10" subwoofer with dual 4-ohm voice coils Kevlar reinforced pulp cone with HAMR Santoprene rubber surround frequency response: 26-200 Hz power handling: 300-750 watts RMS (375 watts per coil) peak power: 2250 watts sensitivity: 82.8 dB top-mount depth: 5.975" mounting height: 0.8" sealed box volume: 0.48-0.93 cu. ft. ported box volume: 0.83-1.38 cu. ft. grille not included warranty: 1 year MFR # R2-W10D4 Item # 500R2W10D4 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 10" Dual 4-ohm voice coil subwoofer Plastic trim ring Two 4.5" jumper wires (each wire has a single banana connector on both ends) Application guide (English/ French) On-line product registration information Warranty information (English/ French) Important Notice (English /French) Features & specs Features and Specs Size 10-inch Impedance (Ohms) 2, 8 Cone Material Kevlar Reinforced Paper Surround Material Santoprene Rubber Basket Material Aluminum Grille None included Free-Air No Dual Voice Coil Yes Sensitivity 82.8 dB at 1 watt Frequency Response 26 - 200 Hz Max RMS Power Handling 750 Peak Power Handling (Watts) 2250 Top Mount Depth (inches) 6 Bottom Mount Depth (inches) N/A Cutout Diameter or Length (inches) 9 1/8 Frame Width 10.456 Frame Length 10.456 Vas (liters) 18.2 Fs (Hz) 32 Qts 0.48 Xmax (millimeters) 20 Parts Warranty 1 Year Labor Warranty 1 Year Box Requirements Ideal Sealed Box Volume (cubic feet) 0.58 Minimum Sealed Box Volume (cubic feet) 0.48 Maximum Sealed Box Volume (cubic feet) 0.93 Ideal Ported Box Volume (cubic feet) 1.33 Minimum Ported Box Volume (cubic feet) 0.83 Maximum Ported Box Volume (cubic feet) 1.38 Port diameter (inches) N/A Port length (inches) N/A The Alpine R2-W10D4 replaces these items: Alpine R-W10D4 Features Kevlar Reinforced Pulp Cone: This Alpine R-Series subwoofer has a two-piece structural parabolic Kevlar reinforced pulp cone. Kevlar adds strength and tear resistance to the woofer cone while maintaining the benefits of a pulp cone design. There is also an oversized inverted polypropylene/ceramic composite dust cap, which increases rigidity and reduces cone distortion at extreme volume levels. HAMRS: The woofer features a High Amplitude Multi Roll Surround (HAMRS), made of Santoprene Rubber, that allows a large linear excursion and greater SPL. The HAMRS design allows extreme excursions without sacrificing valuable cone area. 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 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 4Ω voice coils. When the voice coils are wired in parallel, the woofer presents a 2Ω load; when wired in series, the woofer presents an 8Ω load. Spring Terminals: The spring post terminals are all located on one side of the woofer. The terminals will accept bare wire up to 8-gauge, pin connectors, or single banana plugs. Jumpers: Included with the woofer are two voice coil terminal jumpers, allowing you to easily wire the voice coils in parallel (for a 2Ω load) or series (for an 8Ω load). Enclosure Compatibility Sealed Box Volume: The recommended sealed box volume (gross) range is from 0.48 to 0.93 ft³ cubic feet, with 0.58 ft³ cubic feet being the ideal size. Ported Box Volume: The recommended ported box volume range is from 0.83 to 1.38 ft³. The ideal size is 1.33 ft³ using a slot port measuring 10" (width) x 1½" (height) x 19½" (length), resulting in a tuning frequency of 37 Hz.
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