Alpine R2-W8D2 R Series 8" subwoofer with dual 2-ohm voice coils

Name: Alpine R2-W8D2
Brand: Alpine
SKU: 500R2W8D2
Price: 299.95 USD
Availability: InStock
Rating: 5.0 (4 reviews)

Item # 500R2W8D2

With over 40 years of experience, Alpine has the know-how to deliver the kind of hard-hitting bass you want.

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Crutchfield: Alpine R2 dual voice coil subwoofers

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With over 40 years of experience, Alpine has the know-how to deliver the kind of hard-hitting bass you want.

Item # 500R2W8D2

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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-W8D2 8" 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.

Power play

The R2-W8D2 handles up to 350 watts RMS. 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.

Product highlights:

Featured in our article: Best 8" car subwoofers for 2025
8" subwoofer with dual 2-ohm voice coils
Kevlar reinforced pulp cone with HAMR Santoprene rubber surround
frequency response: 30-200 Hz
power handling: 150-350 watts RMS (175 watts per coil)
peak power: 1,000 watts
sensitivity: 83.6 dB
top-mount depth: 4.631"
mounting height: 0.875"
sealed box volume: 0.3-0.5 cu. ft.
ported box volume: 0.3-0.75 cu. ft.
grille not included
warranty: 1 year
MFR # R2-W8D2
Item # 500R2W8D2
California customers: Please click here for your Proposition 65 WARNING.

What's in the box:

Alpine R2-W8D2 owner's manual

One 8" 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)

Featured video:

Researched by Crutchfield's Pat M.

Features & specs

Features and Specs
Size	8-inch
Impedance (Ohms)	1, 4
Cone Material	Kevlar Reinforced Paper
Surround Material	Santoprene Rubber
Basket Material	Aluminum
Grille	None included
Free-Air	No
Dual Voice Coil	Yes
Sensitivity	83.6 dB at 1 watt
Frequency Response	30 - 200 Hz
Max RMS Power Handling	350
Peak Power Handling (Watts)	1000
Top Mount Depth (inches)	4 11/16
Bottom Mount Depth (inches)	N/A
Cutout Diameter or Length (inches)	6 15/16
Frame Width	8.288
Frame Length	8.288
Vas (liters)	10.1
Fs (Hz)	42
Qts	0.48
Xmax (millimeters)	12
Parts Warranty	1 Year
Labor Warranty	1 Year
Box Requirements
Ideal Sealed Box Volume (cubic feet)	0.3
Minimum Sealed Box Volume (cubic feet)	0.2
Maximum Sealed Box Volume (cubic feet)	0.5
Ideal Ported Box Volume (cubic feet)	0.73
Minimum Ported Box Volume (cubic feet)	0.3
Maximum Ported Box Volume (cubic feet)	0.75
Port diameter (inches)	N/A
Port length (inches)	N/A

The Alpine R2-W8D2 replaces these items:

Alpine SWR-8D2

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 12-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 0.2 cubic feet to 0.5 cubic feet, with 0.3 cubic feet being the ideal size.

Ported Box Volume: The recommended ported box volume range is from 0.3 cubic feet to 0.75 cubic feet. The ideal size is 0.73 ft³ using a slot port measuring 8" (width) x 1" (height) x 17½" (length), resulting in a tuning frequency of 39 Hz.

The Alpine R2-W8D2 replaces these items:

Alpine SWR-8D2

Type-R 8" subwoofer with dual 2-ohm voice coils

22 reviews

Kevlar reinforced pulp cone with HAMR Santoprene rubber surround
power handling: 150-350 watts RMS
frequency response: 30-200 Hz

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2 questions already asked

Alpine R2-W8D2 R Series 8" subwoofer with dual 2-ohm voice coils. Please, what's the recommend amplifier for this subwoofer?? Would a CLARION XC2410 be a good fit??

cuauhtemoc Mar 12, 2025

1 answer

The 4-channel Clarion XC2410 would not be a great match, Cuauhtemoc. Wiring the Alpine R2-W8D2's voice coils in series to show 4-ohms at your amp and using the AudioControl EPIC750 mono amplifier below would be a great match. The AudioControl would provide 300-watts RMS to the Alpine R2-W8D2 subwoofer for excellent sonic performance without overpowering. https://www.crutchfield.com/p_161EPIC750/AudioControl-EPIC750.html

bo Mar 13, 2025 (Staff)

I am considering this speaker for my factory plastic 8 inch enclosure. I filled it with water to get an approximate volume and came up with roughly .6 cubic feet. The recommended is .15-.45 with .3 being ideal. If I choose this speaker, should I fill part of my box with closed cell foam or glue something solid in it or will it still work fine at .6 cubic feet?

jefferson Oct 26, 2022

1 answer

It is likely that this will work just fine with 0.6 cu. ft. of volume. Nevertheless, it would be possible to experiment with foam to help with tightening bass response by reducing internal volume. It will likely be a matter of preference.

zachary Oct 26, 2022 (Staff)

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Alpine R2-W8D2 R Series 8" subwoofer with dual 2-ohm voice coils

Other options

Get questions answered fast & free

About the Alpine R2-W8D2

Product highlights:

What's in the box:

Featured video:

Featured review

More details on the Alpine R2-W8D2

Features & specs

Product Research

Features

Enclosure Compatibility

The Alpine R2-W8D2 replaces these items:

Alpine SWR-8D2

Customer Q&A

2 questions already asked

Frequently compared with

Alpine R2-W8D2

Alpine S2-W8D4

Alpine R2-W8D4

JL Audio 8W3v3-4

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