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Alpine RS-W12D4

1800W Peak (600W RMS) 12” R-Series Dual 4-ohm Shallow Car Subwoofer

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• Peak Power: 1800 watts
• RMS Power: 600 watts
• Impedance: Dual 4 ohm
• Polypropylene Cone
• Butyl Rubber Surround
• Mount depth: 3.22"
• Sensitivity: 81 dB

Learn more about the rsw12d4
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List price $960.00
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NVX NVX SQW124 1200W Peak (600W RMS) 12" SQ-Series Dual 4-ohm Shallow-Mount Car Subwoofer
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Current Promotions (2 offers)


Get a Free roll of Belva 16 Gauge Speaker Wire. Simply click the "Add Both to Cart" button and you will see your savings at checkout. This offer cannot be combined with any other coupons or offers.

Alpine RS-W12D4

100% off


Priced separately $812 94

Promo Savings of $12 99

Total price:

$799 95

Get a Free roll of NVX 25 ft. of True Spec 12Gauge EnvyFlex Speaker Wire (100% Oxygen-Free Copper). Simply click the "Add Both to Cart" button and you will see your savings at checkout. This offer cannot be combined with any other coupons or offers.

Alpine RS-W12D4

100% off


Priced separately $829 94

Promo Savings of $29 99

Total price:

$799 95

Description


Alpine brand icon

Authorized dealer


Alpine RS-W12D4

For those looking to add powerful, hard-hitting bass performance to their vehicle but lack the space to add a subwoofer, Alpine’s R-Series Shallow Subwoofer delivers the same fun and loud sound you’ve come to expect, now in a shallow subwoofer that’s designed to fit in most vehicle applications. Don’t let the size fool you – the R-Series Shallow Subwoofers feature the same cone movement (20MM of excursion) as the full-size R2-Series Subwoofers for extreme output in a shallow woofer design. At the heart of the R-Series Shallow Subwoofers is an oversized 4-inch voice coil that is controlled by a powerful neodymium magnet for 600W RMS of power handling.


Product Details:

  • 12" Dual 4 ohm R Series Subwoofer
  • Power Handling:
    • Peak: 1800 watts
    • RMS: 600 watts
  • Polypropylene Cone
  • Butyl Rubber Surround
  • Alpine Gen2 DD Linear Magnetic Circuit
  • 4" High Temperature Voice coil
  • 20 mm Xmax
  • 10.4 oz. Double Stacked Neodymium magnet motor structure
  • Frequency Response: 25 - 100 Hz
  • Resonance Frequency (Fs): 29 Hz
  • Sensitivity: 81 dB
  • Recommended sealed box volume: 0.6 cubic feet - 1.5 cubic feet
  • Top-mount depth: 3.22"
  • Subwoofer mesh grille: Alpine KTE-RS12G (sold separately)
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

  • Priced Individually

PDF IconAlpine RSW12D4 owner’s manual

Subwoofer Wiring Guide


Wiring Guide to Wire 1 Alpine RS-W12D4 Subwoofer

Mono Amp

2 Channel Amp - Bridged

Wiring Guide to Wire 2 Alpine RS-W12D4 Subwoofers

Mono Amp

Mono Amp - Option 1

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp - Bridged

Wiring Guide to Wire 3 Alpine RS-W12D4 Subwoofers

Mono Amp

4 Channel Amp

Wiring Guide to Wire 4 Alpine RS-W12D4 Subwoofers

Mono Amp

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp


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Specifications & Details


Subwoofer Specifications
Series
R Series
Subwoofer Size
12"
Peak Power Handling
1800 watts
RMS Power Handling
600 watts
Voice Coil(s)
Dual
Impedance (Per Voice Coil)
4 ohm
Voice Coil Diameter
4"
Frequency Response
25 - 100 Hz
Sensitivity
81 dB
Xmax (millimeters)
20 mm
Subwoofer Design
Round / Circle
Main Cone Color
Black
Woofer Composition
Polypropylene
Woofer Surround
Butyl Rubber
Magnet Structure
Double Stacked
Magnet weight
10.4 oz.
Magnet Type
Neodymium
Subwoofer Grille
Optional (Accessory required and sold separately)
Recommended Enclosure Specifications
Recommended Enclosure Type
Sealed
Minimum Sealed Box Volume
0.6 cubic feet
Maximum Sealed Box Volume
1.5 cubic feet
Top-Mount Depth (Mounting Depth)
3.22"
Cutout Diameter
11.62"
Shallow Mount Installation
Yes
T/S Parameters (Electromechanical)
Free-Air Resonance (Fs)
29 Hz
Equivalent Compliance (Vas)
43.84 liters
Total Speaker Q Value (Qts)
1.49
Electrical Q Value (Qes)
1.17
Electrical Resistance of Voice Coil (Re)
3.6 ohm
Mechanical Q Value (Qms)
7.04
What is in the box?
Paperwork
User manual
Warranty/Registration card
WITB: Subwoofers
Subwoofer
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Item Details


Manufacturer:

Model Number:

RS-W12D4

Weight:

18.00lbs

Internal SKU:

rsw12d4

Internal Product ID:

195543

Customer Ratings & Reviews


Alpine RS-W12D4 thumbnail image

5 star
100%
4 star
0%
3 star
0%
2 star
0%
1 star
0%



Durability
0
Value
5
Features
0
Design
5
Usability
0

Customer Photos & Videos


Customer Reviews

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Do it!

If you have a truck and want to maintain your seating and ALSO have some good music….get these subs in dual 4 ohm and get the Alpine 1500 mono, have a reputable shop build your box and enjoy. These things beat for shallow subs under my back seat. I was anxious about the money I spent, but as soon as I heard the results, all concern went away.

By lonnie on August 1, 2025 Checkmark Icon Verified purchase




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