Expert Service 1-661-257-9993 [Hours]

Alpine SWR-12D2 Open Box Incomplete

12" Dual 2 ohm Type-R Car Subwoofer

We apologize

This item has been discontinued

Item Added to Cart

Alpine SWR-12D2 Open Box Incomplete

12" Dual 2 ohm Type-R Car Subwoofer

$144.95

Keep Shopping

Single 12" Ported Enclosure Custom Black Baffle

Gold Binding post terminals and a high quality 5/8" MDF construction.

$59.99

Add
25 ft. of Streetwires 12 Gauge Speaker Cable

You'll need speaker wire to hook up that new subwoofer!

$37.85

Add
20 Square Feet of Sound Dampening Material

NVX Sound dampening is thicker than competitors, eliminates rattles and gives you bigger bass!

$53.99

Add

Don't see the accessory you're looking for?
View all available accessories for the Alpine SWR-12D2 Open Box Incomplete.

Get FAST answers from customers ASK a Question See questions answers

General Features:

  • Item Condition: Open Box Incomplete
    • Item has been previously installed and used
    • 12" Dual 2-Ohm Type-R Series Car Subwoofer
    • Product is Open Box
      • Missing Manual
      • Previously Installed
    • Power Handling:
      • Peak: 3000 watts
      • RMS: 300-1000 watts
    • Impedance: Dual 2 ohms
    • Kevlar treated pulp cone
    • Durable HAMR Santoprene™ surround
    • Progressive Conex spider
    • Compound Radius Curve pole geometry
    • Oversized 2.6", High-Temperature, 4-Layer Dual Voice Coil
    • Frequency response: 26-300 Hz
    • Resonance Frequency (Fs): 31Hz
    • Top-mount depth: 6-3/8"
    • Sensitivity: 84dB
    • 1-year Sonic Electronix Warranty

    Alpine products are warranted solely by Sonic Electronix, Inc. under the same period and terms as the original Alpine warranty. Sonic Electronix is not an Authorized Alpine Dealer and Alpine requires all merchandise purchased by Sonic Electronix customers to be returned solely to Sonic Electronix. Alpine products are also covered by our Standard Return Policy for returns on exchanges or refunds within 30 days from the date of purchase.

    Subwoofer Specifications

    Subwoofer Series
    Each subwoofer manufactured is part of a series. This is the name of the subwoofer's series.
    Type-R (Alpine)
    Subwoofer Size
    Refers to the diameter of the subwoofer, measured in inches.
    12"
    Peak Power Handling
    Peak power handling refers to the amount of power a speaker can handle during a brief musical burst. The RMS power range figure is a much more reliable rating for determining the speaker's power requirements. The Peak power handling specification is typically rated per speaker unless otherwise noted.
    3000 watts
    RMS Power Handling
    The RMS power is the amount of power the speaker requires to operate safely and properly. RMS Power Handling refers to the amount of power a speaker can handle on a continuous basis. We recommend powering your speakers or subwoofer with 80%-120% of its recommended RMS rating. The RMS power handling specification is typically rated per speaker unless otherwise noted.
    600 watts
    Voice Coil(s)
    Dual voice coil subs have more wiring flexibility than single voice coils subs; however, single voice coil subwoofers provide easier hookup options for wiring multiple subwoofers in parallel or series. You may also run a dual voice coil (DVC) sub in parallel, series, or combination. A quad voice coil has four voice coils and is equal to two dual voice coil subwoofers as far as wiring goes.
    Dual
    Impedance (Per Voice Coil)
    The load value (in ohms) that the speakers present to the amplifier per voice coil - the amount of resistance to the current flow. This is a key specification as subs wired in parallel or low impedances can create problems with your amplifier and potentially void all warranties. We encourage you to ask our support department prior to purchase if you do not understand which impedance level will suit your application best.
    2 ohms
    Frequency Response
    The range of frequencies the speaker will reproduce (lowest frequency to the highest). Bigger is better, meaning the wider the range, the better. The optimal range is 20 - 20,000 Hz (which is the range of human hearing).
    24 - 200 Hz
    Sensitivity
    An efficiency or sensitivity rating tells you how effectively a speaker converts power into sound. The higher the number, the more efficient the speaker and the louder it will play with the same input power. An efficient speaker helps you maximize your available power. Most sensitivity ratings measure the speaker's output with 1 watt of input, 1 meter from the speaker. Some speakers' sensitivity is measured with 2.83 volts of input, instead of 1 watt.
     
    Efficiency (1w/1m) is not an accurate indicator of a subwoofer's output capability and should not be used as a comparison to other speakers or subwoofers to determine which one is "louder".
    85 dB
    Xmax (millimeters)
    Typically measured in millimeters, the Xmax value is the measure of a speaker cone's maximum excursion in one direction while maintaining a linear behavior.
    20 mm
    Subwoofer Design
    This is the design of the subwoofer or the opening of the subwoofer enclosure. Each design has it's own benefits, whether it is a square, circle, or oval.

    Round/Circle: This is the typical and common subwoofer design. They have a round cone and are a circle in design.

    Square: These woofers are able to achieve a greater cone area in a smaller space. Because of the greater surface area, some square subwoofers will be louder than a round subwoofer of the same size.

    Round / Circle
    Main Cone Color
    This is the color of the speaker's or subwoofer's cone.
    Dark Gray
    Woofer Composition
    Lightweight woofer cone materials are essential for efficient operation. Poly cones produce exceptional sound and are sturdy against various changes in temperature. Paper cones are very efficient, and when treated for moisture resistance, will perform at a high level. Poly refers to polypropylene, which is thermoplastic or fibers that are polymers of propylene. IMPP refers to injection molded polypropylene, a commonly used process and material in speakers.
    Kevlar Fiber
    Woofer Surround
    A speakers surround is part of the suspension system. The surround protects the cone and prevents it from being displaced as it flexes out from the basket. It is usually made of a durable material like treated foam or rubber in order to withstand the strenuous job of producing bass frequencies.
    Santoprene Rubber
    Subwoofer Grille
    Most subwoofers are able to accommodate a universal grille; however, some subs include a grille and others have a specific, optional grille available for purchase separately. If "yes", then the subwoofer includes a grille. If "optional (sold separately)" the matching grille will need to be purchased in addition to the sub.
    Optional (Accessory required and sold separately)
    Re-Cone Kit Available
    Some higher end subwoofers have replaceable cone assemblies. In case of a blown woofer, a recone kit allows for a simple replacement, as opposed to purchasing an entire new subwoofer.
    No

    Recommended Enclosure Specifications

    Recommended Enclosure Type
    This is the recommended type of enclosure that the subwoofer should be installed into. Some subwoofers are specially designed for particular enclosures.

    Sealed: These enclosures completely enclose the air inside the box. These boxes produce a tight bass.

    Ported/Vented: These enclosures have a slot of air to escape from the box. The result is a sound that has more "boom".

    Bandpass: These are a combination of both sealed and ported enclosures. They can be very efficient, but require tuning for the best response.

    Ported / Vented
    Sealed
    Minimum Sealed Box Volume
    This value indicates the minimum sealed box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
    0.65 cubic feet
    Optimum Sealed Box Volume
    This value indicates the ideal sealed box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
    Maximum Sealed Box Volume
    This value indicates the maximum sealed box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
    1.25 cubic feet
    Minimum Ported Box Volume
    This value indicates the minimum ported box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
    1.0 cubic feet
    Optimum Ported Box Volume
    This value indicates the ideal ported box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
    Maximum Ported Box Volume
    This value indicates the maximum ported box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
    2.0 cubic feet
    Top-Mount Depth
    The depth when installed on top of the mounting surface. Measured from the bottom of the speaker's magnet to the bottom of the mounting holes on the rim of the speaker.
    6-3/8"
    Cutout Diameter
    The actual diameter of the hole you will need to cut out if you are creating a new mounting location for this speaker, or if you are mounting a subwoofer in a box.
    10-13/16"
    Shallow Mount Installation
    This means that the subwoofer/speaker is designed to be installed in areas that do not have a lot of space. Shallow mount subwoofers are typically found under a seat or behind the seat in some trucks.

    Shallow mount speakers will typically have a mounting depth of 2" or less, while shallow mount subwoofers will typically have a mounting depth of 3" or less.

    No

    Electromechanical Parameters

    Efficiency Bandwidth Product (EBP)
    This number represents the trade off between having an efficient woofer and one with a wide bandwidth. To calculate this number, take the Fs and divide it by the Qes. If the number is below 50, the woofer is designed for a sealed enclosure only. If it's between 50-100 it can be used in either. Lastly, if it's greater than 100 it's designed for vented enclosures.

    Specials with this Item

    Promotions
    Promotions we have offer More Ways to Shop for items that are on clearance, last chance, special offer and sales, Made in America, and more!

    Warranty and Return Policy

    Parts Warranty Duration
    1 year
    Labor Warranty Duration
    1 year
    Warranty Provider
    Sonic Electronix

    Summary of Customer Ratings & Reviews

    Rating Distribution

    5 Star
    0%
    4 Star
    0%
    3 Star
    0%
    2 Star
    0%
    1 Star
    0%

    Average Attribution Rating

    Durability
    0.0
    Value
    0.0
    Features
    0.0
    Design
    0.0
    Usability
    0.0
    Accessory Tools and Products

    Accessories added

    Single 12" Ported Enclosure Custom Black Baffle

    Gold Binding post terminals and a high quality 5/8" MDF construction.

    Your Price $59.99

    12" Dual Hatchback Style Medium Sealed Subwoofer Enclosure

    CARB Compliant, 3/4" MDF Dual Hatchback Style Sealed Enclosure w/ Premium Carpeted Finish

    Your Price $69.95

    12" Medium Sealed Subwoofer Enclosure

    CARB Compliant, 3/4" MDF Dual Sealed Enclosure w/ Premium Carpeted Finish

    Your Price $58.99

    12" SingleHatchback Style Small Sealed Subwoofer Enclosure

    CARB Compliant, 3/4" MDF Dual Hatchback Style Sealed Enclosure w/ Premium Carpeted Finish

    Your Price $39.99

    12" Single Hatchback Style Medium Sealed Subwoofer Enclosure

    CARB Compliant, 3/4" MDF Single Hatchback Style Sealed Enclosure w/ Premium Carpeted Finish

    Your Price $43.95

    12" Subwoofer Small Sealed Enclosure

    CARB Compliant, 3/4" MDF Sealed Enclosure Lined with Premium Carpeted Finish

    Your Price $34.95

    12" Medium Sealed Subwoofer Enclosure

    CARB Compliant, 3/4" MDF Sealed Enclosure Lined with Premium Carpeted Finish

    Your Price $39.99

    12" Vented Subwoofer Enclosure

    CARB Compliant, 3/4" MDF Vented Enclosure Lined with Premium Carpeted Finish

    Your Price $65.95

    Single 12" Venteded MDF Subwoofer Enclosure

    12" Vented 3/4" MDF Enclosure Lined w/ Polyfil.

    Your Price $44.99

    25 ft. of Streetwires 12 Gauge Speaker Cable

    You'll need speaker wire to hook up that new subwoofer!

    Your Price $37.85

    Belva 23 ft. of 12 Gauge Speaker Wire

    Ultra-flexible PVC blended jacket for easy installation.

    Your Price $14.99

    20 Square Feet of Sound Dampening Material

    NVX Sound dampening is thicker than competitors, eliminates rattles and gives you bigger bass!

    Your Price $53.99

    Stinger Sound Dampening Trunk Kit

    Stinger's Roadkill sound dampening series is sure to kill unwanted road noise and rattles! Enough sound dampening for your whole trunk!

    Your Price $64.99

    Dynamat Sound Dampening Trunk Kit

    Did you know sound dampening will reduce those annoying rattles and even increase your SPL?

    Your Price $94.95

    2" Universal, Professional Heavy Duty Roller for Sound Damping/Dampening

    Universal rubber roller to make it easy to install sound dampening.

    Your Price $7.99

    Car Stereo and Speaker Installation Tool Kit

    Includes Test Light, Crimp/Splice Tool, Multi-bit Screwdriver and more.

    Your Price $18.99

    Cordless Multi-Functional Heat Tool Soldering Iron Kit

    Continuous working lock allows you to work without holding down trigger.

    Your Price $74.99

    12 oz. Can of Adhesive Spray

    Spray adhesive used for adhering carpet to subwoofer boxes without bubbles.

    Your Price $8.99

    Gold Plated Dual Terminal Banana Plug Connector

    Enables an expandable, secure connection accepting up to 8 gauge wire.

    Your Price $1.99

    Universal 12" Subwoofer Grille

    Keep your subwoofer safe from accidental damages with this amazing grill.

    Your Price $19.95

    Universal 12" Subwoofer Grille

    Keep your subwoofer safe from accidental damages with this amazing grill.

    Your Price $19.95

    12" Protective Waffle Subwoofer Grille

    Keep your subwoofer looking amazing while keeping it safe.

    Your Price $6.99

    Scosche SPL Meter

    Monitor the noise level of your new car audio system with this SPL meter measuring from 60-135 dB.

    Your Price $21.99

    1 Alpine SWR-12D2 Open Box Incomplete Subwoofer

    Mono Amp

    Mono Amp - Option 1

    2 Channel Amp - Bridged

    2 Alpine SWR-12D2 Open Box Incomplete Subwoofers

    Mono Amp

    2 Channel Amp

    4 Channel Amp - Bridged

    3 Alpine SWR-12D2 Open Box Incomplete Subwoofers

    Mono Amp

    Mono Amp - Option 1

    4 Channel Amp

    4 Alpine SWR-12D2 Open Box Incomplete Subwoofers

    2 Channel Amp

    4 Channel Amp

    Browse 2 questions and 2 answers
    Hide answersShow all answers | Sort by
    This is a mono amp, but has two sets of out terminals. Running a single sub, 2 ohms DVC, final load of 1 ohm, which terminals do I hook the sub to? The amp says not bridgable and the instructions only detail hooking up two subs
    A shopper on Sep 11, 2015
    Alpine SWR-12D2-OBI
    Alpine SWR-12D2-OBI
    Rockford Fosgate R750-1D
    Rockford Fosgate R750-1D
    Best Answer: Hello,

    You are free to pick any pair of opposite polarities, it does not matter which ones. The amplifier cannot be bridged because it is a MONOblock. The two outputs are simply that, Outputs - NOT CHANNELS. They are there to make installation of multiple subwoofers easier. For example, if you had a second subwoofer, wired down to a 1ohm each, and gave each one its own output, the amp would see 0.5ohm load. Obviously the amp isn't stable that low, so don't do it, but that gives you an idea of why the amp is set up that way. Back to the point, pick a pair of outputs. Yes, Any.
    Reply · Report · Rick MStaff on Sep 11, 2015
    · Add Answer · I Have This Question Too (1)
    would this be a good set up for 2 alpine type r 12s wired at 2 ohms?
    Jared W on Dec 28, 2015
    Alpine SWR-12D2-OBI
    Alpine SWR-12D2-OBI
    Planet Audio AC4000.1D
    Planet Audio AC4000.1D
    Best Answer: I have this amp running two Pioneer champion series DVC 2 ohm 10's and it does a very good job. I would say that this amp would do well with the mentioned 12's.
    Reply · Report · Lee Montgomery on Dec 28, 2015
    · Add Answer · I Have This Question Too (0)

    Product Summary

    Manufacturer

    Model Number

    SWR-12D2-OBI

    Weight

    26.50lbs

    Internal SKU

    LS-swr12d2-OBIra215210

    Internal Product ID

    96030

    Sonic Electronix Wiring Guide

    Wiring Diagram Legend

    Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

    Product Name: Alpine SWR-12D2 Open Box Incomplete