Name: Alpine R2-W12D2
Brand: Alpine
SKU: 500R2W12D2
Price: 499.00 CAD
Availability: InStock
Rating: 5 (9 reviews)

Overview

by Crutchfield's Bob Bihlmayer

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-W12D2 12" 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.

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Maximum bass output

A versatile performer

The R2-W12D2 handles up to 700 watts RMS, so it's ready for your high-powered amp. Its dual oversized 2-ohm voice coils allow you to draw maximum power from your mono amp. 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.

Subwoofer Wiring Diagrams

To see sample wiring diagrams for all common subwoofer/amplifier combinations, check out this informative article.

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Product highlights:

12" subwoofer with dual 2-ohm voice coils
Kevlar reinforced pulp cone with HAMR Santoprene rubber surround
frequency response: 24-200 Hz
power handling: 300-750 watts RMS (375 watts per coil)
peak power: 2250 watts
sensitivity: 85 dB
top-mount depth: 6.43"
sealed box volume: 0.65-1.1 cu. ft.
ported box volume: 1.1-1.6 cu. ft.
grille not included
warranty: 1 year
MFR # R2-W12D2

What's in the box:

Alpine R2-W12D2 owner's manual

One 12" Dual 2-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	12 -inch
Impedance (Ohms)	1, 4
Cone Material	Kevlar Reinforced Paper
Surround Material	Santoprene Rubber
Port diameter (inches)	N/A
Port length (inches)	N/A
Free-Air	No
Dual Voice Coil	Yes
Sensitivity	85 dB at 1 watt
Frequency Response	24 - 200 Hz
Max RMS Power Handling	750
Peak Power Handling (Watts)	2250
Top Mount Depth (inches)	6 1/2
Bottom Mount Depth (inches)	N/A
Cutout Diameter or Length (inches)	10 7/8
Vas (liters)	36.9
Fs (Hz)	29
Qts	0.41
Xmax (millimeters)	20
Parts Warranty	1 Year
Labor Warranty	1 Year
Box Requirements
Ideal Sealed Box Volume (cubic feet)	0.85
Minimum Sealed Box Volume (cubic feet)	0.65
Maximum Sealed Box Volume (cubic feet)	1.1
Ideal Ported Box Volume (cubic feet)	1.55
Minimum Ported Box Volume (cubic feet)	1.1
Maximum Ported Box Volume (cubic feet)	1.6

The Alpine R2-W12D2 replaces these items:

Alpine R-W12D2

Product Research

Features
Enclosure Compatibility

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 2Ω voice coils. When the voice coils are wired in parallel, the woofer presents a 1Ω load; when 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 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 1Ω load) or series (for a 4Ω load).

Enclosure Compatibility

Sealed Box Volume: The recommended sealed box volume (gross) range is from 0.65 to 1.1 ft³ cubic feet, with 0.85 ft³ cubic feet being the ideal size.

Ported Box Volume: The recommended ported box volume range is from 1.1 to 1.6 ft³. The ideal size is 1.55 ft³ using a slot port measuring 12½" (width) x 1½" (height) x 22" (length), resulting in a tuning frequency of 36 Hz.