Alpine S2-W12D4 S2-Series 12" 600W RMS (1800W Peak Power Handling) 4 Ohms, Dual Voice Coil Component Car Subwoofer
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What's Inside?
- • 12" 4 Ohm Dual Voice Coil Component Car Subwoofer
- • (2) 3" jumper cables (each has a single banana connector on each end)
- • Trim ring (installed)
- • Subwoofer Application Guide (English/ French)
- • On-line product registration information (English/ French/ Spanish)
- • Warranty information (English/ French)
- • Important Notice! (English/ French)
- • Owner's Manual
Why Choose Alpine S2-W12D4 Component Car Subwoofer?
Feel the Bass. Own the Road.
The Alpine S2-W12D4 delivers serious 12" bass with 600W RMS and 1,800W peak power. It’s built for enthusiasts who want deep, powerful bass without spending big on a premium subwoofer.
Deep Bass That Hits Different
A carbon fiber/polypropylene cone, H.A.M.R. surround, and 15mm X-Max help the S2-W12D4 deliver strong, controlled bass with plenty of impact. It’s ready for everything from hard-hitting hip-hop to bass-heavy EDM.
Power Up and Turn It Loose
The dual 4-ohm voice coils give you flexible wiring options for your system. Pair one S2-W12D4 with Alpine’s S2-A60M 600W mono amp for a well-matched setup, or use the S2-A120M for a dual-subwoofer 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-W12D4 Highlights
POWERFUL BASS
600W RMS Power Handling
Enjoy deep, hard-hitting bass with 600 watts RMS power handling and up to 1,800 watts of peak power for an exciting audio upgrade.
S-SERIES PERFORMANCE
High-Output 12" Subwoofer
The 12-inch S-Series design delivers strong low-end impact and deep bass for a more powerful and immersive listening experience.
FLEXIBLE WIRING
Dual 4-Ohm Voice Coils
Dual 4-ohm voice coils provide flexible wiring options for different amplifier and audio system configurations.
DURABLE CONSTRUCTION
Carbon Fiber & Polypropylene Cone
The carbon fiber and polypropylene cone combines strength and a lightweight design for powerful and reliable bass performance.
HIGH EXCURSION
H.A.M.R. Multi-Roll Surround
The H.A.M.R. surround supports smooth cone movement and up to 15mm of one-way X-Max for deep and controlled bass.
ENCLOSURE FLEXIBILITY
Sealed or Ported Enclosure Ready
Build your system your way with enclosure options for both sealed and ported designs to match your preferred bass response.
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-W12D4 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-W12D4, from single-subwoofer builds to high-output multi-sub bass systems
Amplifier Matching Overview
S2-W12D4 Power Rating: 600W RMS / 1800W Peak
Ideal Amp Range: Approximately 500W – 600W RMS for a single subwoofer
S2-W12D4: Dual 4Ω voice coil configuration
Single-Sub Wiring: Wire both 4Ω voice coils in parallel for a 2Ω final load
Best Setup: Alpine S2-A60M 600W mono amplifier for a single S2-W12D4
Best Overall Match – 600W S-Series Mono Amplifier
The S2-A60M is Alpine's recommended match for a single S2-W12D4. Wire the dual 4Ω voice coils in parallel for a 2Ω final load, allowing the amplifier to deliver 600W RMS and closely match 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-W12D4 subwoofers. Its 1200W RMS output provides approximately 600W RMS per subwoofer when powering two S2-W12D4 subs in a properly configured system.
High-Power Alternative – 750W R-Series Mono Amplifier
The R2-A75M provides additional amplifier headroom for enthusiasts running a single S2-W12D4. Its higher power capability can support a strong high-output setup when the gain is properly adjusted to keep the 600W RMS subwoofer within its recommended power range.
Strong Alternative – 800W Class-D Mono Amplifier
The CXA800.1 is a strong third-party option for a single S2-W12D4. Its available power provides additional headroom, but the amplifier should be properly configured so the S2-W12D4 is not driven beyond its 600W RMS power handling.
Why the S2-A60M Is the Recommended Choice
Ideal Power Match: The S2-A60M provides 600W RMS at 2Ω, closely matching the S2-W12D4's 600W RMS rating
Full S2-W12D4 Output: A properly configured single S2-W12D4 can receive the amplifier's full 600W RMS output
DVC Compatibility: The S2-W12D4's dual 4Ω voice coils can be configured for a 2Ω 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-W12D4
S2-W12D4 Dual Voice Coil Amplifier Matching
Voice Coil Configuration: The S2-W12D4 features dual 4Ω voice coils
Parallel Wiring: Wire both 4Ω voice coils in parallel for a 2Ω final impedance
Series Wiring: Wire the voice coils in series for an 8Ω final impedance when required by the amplifier
Best Match: A 2Ω-stable mono amplifier producing approximately 600W RMS is the preferred setup
Important: Always confirm the amplifier's RMS output at the final impedance before connecting the subwoofer
Recommended S2-W12D4 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-W12D4 System Configurations
Single S2-W12D4: Pair one subwoofer with the Alpine S2-A60M for 600W RMS at a 2Ω final load
Single High-Output Build: Use an amplifier capable of approximately 600W–750W RMS, but set the output carefully to avoid overpowering the 600W RMS subwoofer
Dual S2-W12D4: Target approximately 1,200W RMS total, or about 600W RMS per subwoofer
Best Overall Build: Pair one S2-W12D4 with the S2-A60M for a balanced Alpine S-Series system
Dual-Sub Build: Step up to the S2-A120M when running two S2-W12D4 subwoofers
Pro Tip: For a single Alpine S2-W12D4, the S2-A60M is the standout amplifier match. Configure the subwoofer's dual 4Ω voice coils for a 2Ω final load and pair it with approximately 600W RMS of clean amplifier power for a strong combination of output, efficiency and reliability.
Frequently Asked Questions (FAQ)
- • Is a 12-inch subwoofer too much for a daily driver?
No, a properly tuned 12-inch subwoofer can deliver deep, controlled bass without overwhelming the rest of your system. The final sound depends on your enclosure, amplifier, and tuning.
- • Why does the bass sound good at low volume but distorted when I turn it up?
This usually happens when the amplifier gain is set too high or the amplifier is clipping. Proper gain adjustment and clean power will help maintain clear bass at higher volumes.
- • Can I use this in a sealed enclosure for tighter bass?
Yes, a sealed enclosure is an excellent choice if you prefer accurate and punchy bass. It also requires less space than many ported enclosure designs.
- • Why does the subwoofer stop playing after a few minutes?
This is often caused by the amplifier entering protection mode because of overheating, incorrect wiring, or low impedance. Inspect the wiring and verify that the amplifier is compatible with your setup.
- • Will this work with my existing amplifier?
It will if your amplifier delivers the recommended RMS power at the correct impedance. Matching the amplifier properly helps maximize performance and reliability.
- • Why does the bass seem delayed compared to my door speakers?
This can happen because of incorrect phase, crossover settings, or time alignment. Adjusting these settings will help the bass blend more naturally with the rest of your speakers.
- • Can I install this subwoofer facing down?
Down-firing installations can work well if the enclosure is designed for that mounting position. Make sure there is enough clearance beneath the enclosure for proper cone movement.
- • Why does the bass sound different after a few weeks?
As the suspension breaks in, the subwoofer may produce smoother and slightly deeper bass. This is a normal part of the break-in process for many new subwoofers.
- • Is one 12-inch subwoofer enough, or should I install two?
One subwoofer is enough for most daily listening systems and provides excellent low-frequency performance. Installing two can increase output and deliver more even bass throughout the vehicle.
- • How can I make the bass hit harder without buying another subwoofer?
Use the recommended enclosure, fine-tune the crossover and gain settings, and verify that the polarity is correct. Proper tuning often improves bass output more than simply increasing amplifier power.
Alpine S2-W12D4 Related Videos
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Learn How To Wire Subwoofers
- Diameter : 12 Inch
- Impedance : 4 Ohm
- Frequency Response : 23-215 Hz
- Peak Power Handling : 1800 Watts
- Number of Voice Coils : Dual
- RMS Power Handling : 600 Watts
Features:
- Dual Voice Coil Subwoofers with Configuration Jumpers: Flexible wiring options for multiple setups.
- Carbon Fiber / Polypropylene Cone: Lightweight and rigid for tight, accurate bass.
- Polypropylene / Ceramic Dust Cap: Adds cone rigidity for enhanced performance.
- High-Grade Strontium Ferrite Magnets: Strong motor structure for powerful output.
- Twist-Lock Grille Mount System: Easy installation of protective grilles.
- High-Amplitude Multi-Roll (H.A.M.R.) Surround: Maximizes cone excursion for deep bass.
- Push-Type Speaker Terminals: Supports up to 8AWG wire size.
Specifications:
- Size: 12-inch
- Impedance (Ohms): 2, 8
- Cone Material: Carbon Fiber/Polypropylene
- Surround Material: Rubber
- Basket Material: Steel
- Grille: None included
- Free-Air: No
- Dual Voice Coil: Yes
- Sensitivity: 86.2 dB at 1 watt
- Frequency Response: 23 – 215 Hz
- Max RMS Power Handling: 600 watts
- Peak Power Handling (Watts): 1800 watts
- Top Mount Depth (inches): 5 1/16
- Bottom Mount Depth (inches): N/A
- Cutout Diameter or Length (inches): 10 5/8
- Frame Width: 12.5
- Frame Length: 12.5
- Vas (liters): 51.5
- Fs (Hz): 28.8
- Qts: 0.44
- Xmax (millimeters): 15
- UPC: 793276085221
- Weight: 14.27
- 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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Write a review!
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Just more a bit of 5-inches depth for a 12-inch subwoofer, which can be shallow, but it still loud and powerful. I am using an Alpine S2-A60M to power it up and it really fulfills its bass potential. Totally worth the price for more than 170 bucks. Would gladly recommend it to others.
