Alpine S2-W12D2 Next Gen S-Series 12" 600W RMS (1800W Peak Power Handling) at 2 Ohms, Dual Voice Coil Car Subwoofer
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What's Inside?
- • 12" 2 Ohms Dual Voice Coil Car Subwoofer
- • Trim ring (installed)
- • Subwoofer Application Guide (English/ French)
- • (2) 3" jumper cables (each has a single banana connector on each end)
- • On-line product registration information (English/ French/ Spanish)
- • Warranty information (English/ French)
- • Important Notice! (English/ French)
- • Owner's Manual
Why Choose Alpine S2-W12D2 Component Car Subwoofer?
Feel the Bass. Own the Road.
If you want deeper, harder-hitting bass without going overboard on your budget, the Alpine S2-W12D2 12-inch S-Series subwoofer is ready to bring your car audio system to life. With 600W RMS and 1,800W peak power handling, this next-generation S-Series subwoofer delivers powerful low-end punch that makes every beat feel more impactful.
Built to Move Some Serious Air.
The S2-W12D2 combines a carbon fiber/polypropylene cone, high-grade strontium ferrite magnet, and Alpine's H.A.M.R. surround technology to deliver deep, accurate, low-distortion bass. With a 23Hz–215Hz frequency response and 15mm of one-way X-Max, it moves serious air while keeping your bass controlled and musical.
Turn Up the Bass Your Way.
The dual 2-ohm voice coils with configuration jumpers give the Alpine S2-W12D2 flexible installation options, making it easier to build the system you want. Pair a single subwoofer with Alpine's S2-A60M 600W mono amplifier for a well-matched setup, or step up to the S2-A120M 1200W mono amplifier when running two or more subs. If you're ready for bigger, deeper, and more exciting bass, the S2-W12D2 is a serious upgrade for your car audio system.
Alpine 12-Inch Subwoofer Comparison Chart | S2-W12 vs R2-W12 vs RS-W12 vs HDZ-W12 vs W12S4
| Ultimate Alpine 12" Subwoofer Performance Comparison |
Alpine S2-W12D4 / S2-W12D2
Next-Gen S-Series 12" Subwoofer – Powerful Bass
BEST VALUE
- • 12" S-Series Subwoofer
- • 600W RMS / 1,800W Peak
- • DVC 4Ω or DVC 2Ω options
- • 15mm X-Max
- • Excellent daily-driver bass
- • Great performance for the price
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Alpine R2-W12D4 / R2-W12D2
Next-Gen R-Series 12" Subwoofer – High-Output Bass
HIGH PERFORMANCE
- • 12" R-Series Subwoofer
- • 750W RMS / 2,250W Peak
- • DVC 4Ω or DVC 2Ω options
- • 20mm X-Max
- • High-output bass performance
- • Ideal for serious car audio builds
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Alpine RS-W12D4 / RS-W12D2
R-Series Shallow 12" Subwoofer – Powerful Bass in a Slim Design
SHALLOW PERFORMANCE
- • 12" R-Series Shallow Subwoofer
- • 600W RMS / 1,800W Peak
- • DVC 4Ω or DVC 2Ω options
- • 20mm X-Max
- • 3.25" shallow mounting depth
- • Ideal for space-limited installations
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Alpine HDZ-W12
Alpine Status 12" Subwoofer – Premium Bass & High-Power Performance
PREMIUM PICK
- • 12" Alpine Status Subwoofer
- • 800W RMS / 2,400W Peak
- • 20mm X-Max
- • Premium carbon-fiber dust cap
- • Cast-aluminum frame construction
- • Designed for premium systems
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Alpine W12S4
12" Single Voice Coil Subwoofer – Affordable Bass Upgrade for Entry-Level
BUDGET PICK
- • 12" Single Voice Coil Subwoofer
- • 250W RMS / 750W Peak
- • Single 4Ω voice coil
- • 5.31" mounting depth
- • Simple amplifier pairing
- • Great for entry-level systems
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Alpine S2-W12D2 Highlights
POWERFUL BASS
600W RMS Power Handling
Bring deep, powerful bass to your car audio system with 600 watts RMS power handling and up to 1,800 watts of peak power.
S-SERIES PERFORMANCE
High-Output 12" Subwoofer
The 12-inch S-Series design delivers rich, deep bass and strong low-end impact for an exciting car audio experience.
FLEXIBLE WIRING
Dual 2-Ohm Voice Coils
The dual 2-ohm voice coils provide flexible wiring options, making it easier to match the subwoofer with your amplifier and audio system.
DURABLE CONSTRUCTION
Carbon Fiber & Polypropylene Cone
The carbon fiber and polypropylene cone combines strength and a lightweight design for responsive, accurate, and powerful bass performance.
HIGH EXCURSION
H.A.M.R. Multi-Roll Surround
The H.A.M.R. surround allows efficient cone movement with up to 15mm of one-way excursion for deep, powerful, and controlled bass.
ENCLOSURE READY
Sealed & Ported Enclosure Ready
Designed for sealed or ported enclosures, giving you the flexibility to build a system with tight bass or stronger low-end impact.
SMOOTH BASS RESPONSE
Wide Frequency Response
A 23Hz–215Hz frequency response helps deliver deep low notes and smooth bass across a wide range of music.
Alpine S2-W12D2 Recommended Amplifiers | Best 12" S-Series Subwoofer Amp Pairings for Powerful Bass
Build Your Alpine S-Series 12" Subwoofer System
Real-world amplifier recommendations for the Alpine S2-W12D2, from single-subwoofer builds to high-output multi-sub bass systems
Amplifier Matching Overview
S2-W12D2 Power Rating: 600W RMS / 1800W Peak
Ideal Amp Range: Approximately 500W – 600W RMS for a single subwoofer
S2-W12D2: Dual 2Ω voice coil configuration
Single-Sub Wiring: Wire both 2Ω voice coils in series for a 4Ω final load
Best Setup: Alpine S2-A60M 600W mono amplifier for a single S2-W12D2
Best Overall Match – 600W S-Series Mono Amplifier
The S2-A60M is Alpine's recommended match for a single S2-W12D2. Wire the dual 2Ω voice coils in series for a 4Ω final load, allowing the amplifier to deliver the appropriate power for the subwoofer's 600W RMS power handling.
Best Multi-Sub Upgrade – 1200W S-Series Mono Amplifier
The S2-A120M is Alpine's recommended amplifier for two or more S2-W12D2 subwoofers. Its 1200W RMS output provides approximately 600W RMS per subwoofer when powering two S2-W12D2 subs in a properly configured system.
Why the S2-A60M Is the Recommended Choice
Ideal Power Match: The S2-A60M provides 600W RMS of mono power for a strong match with the S2-W12D2's 600W RMS rating
Full S2-W12D2 Output: A properly configured single S2-W12D2 can receive the amplifier's available power
DVC Compatibility: The S2-W12D2's dual 2Ω voice coils can be configured for a 4Ω final load
Class-D Efficiency: The S2-A60M uses Alpine's Class-D amplifier design for efficient mono bass power
Alpine System Matching: Alpine specifically recommends the S2-A60M for a single S2-W12D2
S2-W12D2 Dual Voice Coil Amplifier Matching
Voice Coil Configuration: The S2-W12D2 features dual 2Ω voice coils
Series Wiring: Wire both 2Ω voice coils in series for a 4Ω final impedance
Parallel Wiring: Wiring both voice coils in parallel creates a 1Ω final impedance and should only be used with a properly rated amplifier
Best Match: A mono amplifier that is compatible with the final impedance and provides appropriate RMS power is preferred
Important: Always confirm the amplifier's RMS output at the final impedance before connecting the subwoofer
Recommended S2-W12D2 Amplifier Settings
Gain Setting: Set the gain for clean output without clipping rather than using gain as a volume boost
Low-Pass Filter: Start around 80Hz and adjust according to the vehicle, enclosure and front-stage response
Bass EQ: Keep bass boost moderate to maintain clean output and protect the subwoofer
Subsonic Filter: Use a subsonic filter with a ported enclosure, typically set below the enclosure's tuning frequency
Phase: Adjust phase for the strongest and smoothest bass integration with the vehicle's front speakers
Recommended S2-W12D2 System Configurations
Single S2-W12D2: Pair one subwoofer with the Alpine S2-A60M using the appropriate voice-coil configuration
Single High-Output Build: Use an amplifier capable of approximately 600W RMS, while properly setting the output to avoid overpowering the subwoofer
Dual S2-W12D2: Target approximately 1,200W RMS total, or about 600W RMS per subwoofer
Best Overall Build: Pair one S2-W12D2 with the S2-A60M for a balanced Alpine S-Series system
Dual-Sub Build: Step up to the S2-A120M when running two S2-W12D2 subwoofers
Pro Tip: For a single Alpine S2-W12D2, the S2-A60M is the standout amplifier match. Configure the subwoofer's dual 2Ω voice coils appropriately for the amplifier's final load and use clean amplifier power for a strong combination of output, efficiency and reliability.
Frequently Asked Questions (FAQ)
- • What enclosure type should I use for the best bass performance?
The subwoofer performs well in both sealed and ported enclosures when built according to the recommended specifications. Selecting the proper enclosure helps maximize bass response, efficiency, and overall sound quality.
- • Why does the bass sound weak even though the subwoofer is moving?
This is commonly caused by incorrect crossover settings, improper enclosure volume, or amplifier gain that is set too low. Carefully tuning the amplifier and using the recommended enclosure usually restores stronger bass performance.
- • Can I wire the dual 2-ohm voice coils in different configurations?
Yes, the dual voice coil design allows multiple wiring options to match compatible amplifier impedance requirements. Following the recommended wiring diagram helps achieve reliable operation and maximum performance.
- • What amplifier size works best with this subwoofer?
An amplifier whose RMS power closely matches the subwoofer's continuous power rating provides the best balance of output and reliability. Proper power matching also minimizes distortion and helps extend the life of the subwoofer.
- • Why do I hear distortion or crackling when I turn the volume up?
Distortion is often caused by amplifier clipping, excessive bass boost, or incorrect gain settings. Reducing the gain and properly tuning the amplifier usually restores clean and controlled bass.
- • Can I install two of these subwoofers for even more bass?
Yes, many users install a pair to achieve greater low-frequency output and more balanced bass throughout the vehicle. Be sure your amplifier, enclosure, and vehicle's electrical system can support the increased power requirements.
- • What size power wire can the heavy-duty input terminals safely support?
The integrated spring-loaded push terminals on the basket frame are designed to securely accommodate bare speaker wire up to 8 AWG. Utilizing a high-quality thick gauge wire ensures maximum current transfer from your amplifier stage and prevents loose connections over time.
- • Why does my trunk or rear hatch rattle so much after installing the subwoofer?
The increased bass output can cause loose trim panels, license plates, and interior components to vibrate. Installing sound-deadening material and securing loose parts can greatly reduce unwanted rattles.
- • Does this speaker come with a protective mesh cover or grille inside the box?
No, a physical speaker grille is not included in the standard retail box and must be purchased as an optional accessory. The basket frame does, however, feature an integrated screwless twist-lock mounting rim designed to accept the compatible protective grille easily.
Alpine S2-W12D2 Related Videos
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Learn How To Wire Subwoofers
- Diameter : 12 Inch
- Sensitivity : 85.7 dB
- Impedance : 2 Ohm
- Frequency Response : 23-215 Hz
- Peak Power Handling : 1800 Watts
- Number of Voice Coils : Dual
- Suggested Sealed Box Volume : 0.85 Cubic ft.
- Suggested Ported Box Volume : 1.51 Cubic ft.
- RMS Power Handling : 600 Watts
Features:
- 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 extended 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 the voice coils are 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 pin connectors, single banana plugs, or bare wire up to 8-gauge.
- Jumpers: Included with the woofer are two voice coil terminal jumpers. These jumpers allow you to easily wire the voice coils in parallel (for a 1Ω load) or series (for a 4Ω load).
- Sealed Box: Alpine recommends a sealed enclosure with an internal volume between 0.61 and 1.06 cubic feet, with an ideal volume of 0.85 cubic feet. Sealed enclosures provide the most control over a woofer, will handle a lot of power, and provide accurate sonic reproduction, making them suitable to all types of music.
- Ported Box Volume: The recommended ported box volume ranges from 1.06 cubic feet to 1.56 cubic feet, with the ideal size being 1.51 cubic feet, using a slot port measuring 12½" (W) x 1" (H) x 16" (L).
Specifications:
- Size: 12 -inch
- Impedance (Ohms): 1, 4
- Cone Material: Carbon Fiber/Polypropylene
- Surround Material:Rubber
- Free-Air: No
- Dual Voice Coil: Yes
- Sensitivity: 85.7 dB at 1 watt
- Frequency Response: 23 - 215 Hz
- Max RMS Power Handling: 600
- Peak Power Handling (Watts): 1800
- Top Mount Depth (inches): 5 1/16
- Cutout Diameter or Length (inches): 10 5/8
- Frame Width: 12.5
- Frame Length: 12.5
- Vas (liters): 55.1
- Fs (Hz): 26.6
- Qts: 0.43
- Xmax (millimeters): 15
Box Requirements:
- Ideal Sealed Box Volume (cubic feet): 0.85
- Minimum Sealed Box Volume (cubic feet): 0.61
- Maximum Sealed Box Volume (cubic feet): 1.2
- Ideal Ported Box Volume (cubic feet): 1.51
- Minimum Ported Box Volume (cubic feet): 1.06
- Maximum Ported Box Volume (cubic feet): 1.6
- UPC: 793276085238
- Weight: 22.45
- Authorized Internet Dealer
Warranty: 2 Year(s) Warranty.
This item is accompanied by a manufacturer's warranty. If it is found to be defective, it may be returned to OnlineCarstereo.com for repair within 1 year from the original date of purchase with proper return authorization.
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This subwoofer is truly a powerhouse and it produces a deep, booming bass that has elevated my car audio entertainment to a whole new level. I've been a long time fan of Alpine speakers and subs, and with sub, I don't think it will be changing any time soon
