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Alpine SWA-12S4 (LIKE NEW DAMAGED PACKAGE)

250W 12" BASSLINE Single 4 Ohm Subwoofer

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This item has been discontinued

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Alpine SWA-12S4 (LIKE NEW DAMAGED PACKAGE)

250W 12" BASSLINE Single 4 Ohm Subwoofer

$44.99

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12" Dual Hatchback Style Small Sealed Subwoofer Enclosure

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

$68.95

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NVX 25 ft. of True Spec 12 Gauge Speaker Wire

100% OFC wire with EnvyFlex metallic jacket insulates and protects against damage from extreme conditions.

$39.99

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20 Square Feet of Sound Dampening Material

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

$53.99

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Item Condition: Like New

  • Like new Damaged Package:
    • General Features:

      • 12" Single 4 Ohm BASSLINE Series Subwoofer
      • Power Handling:
        • Peak: 750 watts
        • RMS: 250 watts
        • RMS Power Range: 50-250 watts
      • Polypropylene & mica damped cone with Progressive Wavelet Rib (PWR) design
      • High-excursion poly-foam surround
      • Polyester progressive spider
      • Two-piece yoke with vented pole for improved air flow and voice coil cooling
      • High strength custom steel frame
      • Optional Protective Grille available KTE-12PG
      • 8 Gauge push pin terminals
      • 2" Aluminum voice coil
      • 60 oz. Single stacked magnet
      • Resonance Frequency (Fs): 30 Hz
      • Top-mount depth: 5-1/2"
      • Sensitivity: 87.6 dB
      • 1-year Sonic Electronix Warranty

    Subwoofer Specifications

    Subwoofer Series
    Each subwoofer manufactured is part of a series. This is the name of the subwoofer's series.
    BASSLINE (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.
    750 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.
    250 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.
    Single
    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.
    4 ohms
    Voice Coil Diameter
    Diameter of voice coil, usually measured in inches.
    2"
    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).
    22 - 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".
    87.6 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.
    10 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.
    Black
    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.
    Polypropylene
    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.
    Poly-Foam
    Magnet Structure
    Defines the overall structure of the subwoofers magnet.
    Single Stacked
    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.
    No
    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.
    0.75 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.
    1.09 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.
    1.5 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.
    1.5 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.
    1.91 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.
    2.5 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.
    5-1/2"
    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.
    10-9/16"
    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

    Free-Air Resonance (Fs)
    The free-air resonance frequency of the subwoofer, measured in Hz. At this frequency the weight of the moving parts is perfectly balanced with the subwoofers suspension system.
    30 Hz
    Equivalent Compliance (Vas)
    This is the amount of air that has the same stiffness as the subwoofers suspension. The greater the rating, the lower the stiffness and larger recommended enclosure. It is measured in Liters.
    67.8 liters
    Total Speaker Q Value (Qts)
    This is the subwoofers relative damping (Q) at the resonance frequency (Fs), including all dimensionless losses. Essentially, a high Qts value (closer to 1.0) means the subwoofer is great for sealed enclosures and a low Qts value (closer to 0) means the woofer is great in vented enclosures. A Qts of around 0.45 means the woofer will work decently in either enclosure type.
    0.49
    Electrical Q Value (Qes)
    The subwoofers relative damping (Q) at the resonance frequency (Fs), including electrical losses. Also called the mechanical damping of the subwoofer. The unitless measurement usually varies from 0.5 – 10.
    0.53
    Electrical Resistance of Voice Coil (Re)
    Amount of DC resistance of the subwoofer when measured with an ohm meter. Typically, this will read less than the impedance rating of the subwoofer.
    3.6 ohms
    Mechanical Q Value (Qms)
    This is the subwoofers relative damping (Q) at the resonance frequency (Fs), including mechanical losses. Also called the mechanical damping of the subwoofer. This unitless measurement usually varies from 0.5 – 10.
    7.07

    Specials with this Item

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    Warranty and Return Policy

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

    Summary of Customer Ratings & Reviews

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    Accessory Tools and Products

    Accessories added

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    Single 12" Venteded MDF Subwoofer Enclosure

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    Dual 12" Sealed MDF Subwoofer Enclosure

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    Single 12" Sealed MDF Subwoofer Enclosure

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    NVX 25 ft. of True Spec 12 Gauge Speaker Wire

    100% OFC wire with EnvyFlex metallic jacket insulates and protects against damage from extreme conditions.

    Your Price $39.99

    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

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    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.

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    Car Stereo and Speaker Installation Tool Kit

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    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

    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 SWA-12S4 (LIKE NEW DAMAGED PACKAGE) Subwoofer

    Mono Amp

    2 Channel Amp - Bridged

    2 Alpine SWA-12S4 (LIKE NEW DAMAGED PACKAGE) Subwoofers

    Mono Amp

    2 Channel Amp

    4 Channel Amp - Bridged

    3 Alpine SWA-12S4 (LIKE NEW DAMAGED PACKAGE) Subwoofers

    4 Channel Amp

    4 Alpine SWA-12S4 (LIKE NEW DAMAGED PACKAGE) Subwoofers

    Mono Amp

    Mono Amp - Option 1

    2 Channel Amp

    2 Channel Amp - Bridged

    4 Channel Amp

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    Product Summary

    Manufacturer

    Model Number

    LS-SWA-12S4-LNDP

    UPC

    793276012548

    Weight

    12.50lbs

    Internal SKU

    LS-swa12s4-LNDP

    Internal Product ID

    106687

    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 SWA-12S4 (LIKE NEW DAMAGED PACKAGE)