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"Fit perfectly and worked exactly as expected — support was excellent."
Alpine S2-SB12V
Upgrade Your Vehicle With Confidence. This Is Built to Fit, Perform, and Last
Real installer support before and after purchase
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Full Manufacturer 2 Years Warranty
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Ships within 1-3 days
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Alpine S2-SB12V 12-Inch S-Series Halo Ported Enclosure
Product Overview:
The Alpine S2-SB12V is a preloaded ported subwoofer enclosure that draws visual inspiration from the Alpine Halo display series. It features distinctive curved edges, a sleek silver trim, and a brushed aluminum-finished metallic front baffle for a high-end, custom look. This enclosure is specifically engineered to maximize the performance of the next-generation S-Series subwoofer, delivering deep, high-output bass with a professional aesthetic.
Features
Double Your Bass with ProLink™
The standout feature of the S2-SB12V is its ProLink™ technology. This unique design allows you to physically and electronically link two of these enclosures together using the optional KTX-H12 linking kit (sold separately). This setup transforms two single boxes into a sturdy, dual-subwoofer system with a unified appearance, effectively doubling your bass impact.
Optimized Ported Performance
Designed for maximum output, the enclosure features a ported (vented) design tuned specifically to 35Hz (or 36Hz depending on the specific tuning variant). The port is engineered with rounded internal edges to reduce air turbulence, resulting in deeper, more reliable bass response that enhances the richness of your music compared to standard sealed boxes.
Next-Gen S-Series Driver
Inside the enclosure is the S2-W12D4 12-inch subwoofer. It uses a Kevlar-reinforced pulp cone (or a carbon fiber/polypropylene blend in some variants) paired with Alpine’s High-Amplitude Multi-Roll (HAMR) surround. This construction allows for 15mm of linear excursion, enabling the sub to handle a constant 600W RMS while maintaining low distortion and high precision.
Rugged Halo Construction
The cabinet is built from high-quality 3/4" MDF and wrapped in premium black carpet with a silver embossed Alpine logo. It is designed to be a "plug-and-play" solution, with its dual 4-ohm voice coils pre-wired in parallel to a single 2-ohm load. The enclosure features heavy-duty binding post terminals that provide a secure connection for high-current power delivery.
Full Specs:
| Category | Specification |
| General | |
| Subwoofer Size | 12-Inch |
| Enclosure Type | Ported / Vented |
| Power Handling | 600W RMS / 1800W Peak |
| Nominal Impedance | 2-Ohm (Final) |
| Frequency Response | 23Hz – 215Hz |
| Sensitivity (1W/1M) | 86.2 dB |
| Construction | |
| Enclosure Material | 3/4" MDF |
| Finish | Black Carpet / Metallic Front Baffle |
| Subwoofer Model | S2-W12D4 |
| Surround Type | HAMR Rubber |
| Dimensions | |
| Width | 17" |
| Height | 14.625" |
| Depth | 15" |
| Weight | Approx. 33 - 53 lbs (depending on configuration) |
| Expansion | |
| Linking Kit | KTX-H12 (Optional) |
| Optional Grille | Twist-Lock System (KTE-12G.3) |
- Ships within 1–3 business days from our warehouse
- Tracking included with every order
- Free 30-day returns if it doesn’t work for your setup
- 2-year manufacturer warranty
- Authorized dealer guarantee
- Real installer-backed support before and after purchase
Alpine S2-SB12V
Sale price$499.95
Why This Upgrade Makes Daily Driving Better
Ease of Use & Safety
Hands-free control reduces distraction and frustrationwhile driving.
Expandable by Design
Add backup cameras, better speakers, amps, or subsanytime.
FITMENT & INSTALLATION MADE SIMPLE
WHAT VEHICLES IT WORKS WITH
FIND THE RIGHT PRODUCT FOR YOUR EXACT VEHICLE
We verify compatibility before you buy, no guesswork.
DIY FRIENDLY IF:
- You're comfortable with basic tools
- You follow provided instructions
PROFESSIONAL INSTALL RECOMMENDED IF:
- Your vehicle requires dash kits or wiring adapters
- You want a turnkey experience
INSTALLATION CREDIT & SUPPORT:
- $75 Installation Credit when purchased online
- Speak to real installers before you buy
- Bring it into one of our locations for install
40 Years of Installation Experience
Tens of Thousands of Installs Completed
Authorized Dealer Full Warranties
Why Buying This Here Is Safer Than Anywhere Else
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Authorized Products
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Easy Returns
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Physical stores & real installers
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FREQUENTLY ASKED QUESTIONS
FREQUENTLY ASKED QUESTIONS
How do I know this stereo or speaker will fit my car?
Select your year, make, and model using the Vehicle Fit Guide at the top of the page. You’ll only see products that are compatible with your exact vehicle setup.
What happens if I order something that doesn’t fit?
You can return or exchange it within 30 days. We’ll help you identify the correct part for your vehicle so you don’t have to guess again.
Are these products brand new and covered by warranty?
Yes — all products are brand new, authentic, and sold as an authorized dealer, which means they include a full manufacturer warranty.
Can you install this for me, or do I need to do it myself?
You can do either. Install it yourself, or use your $75 installation credit at our shop and have it professionally installed by our team.
What if I don’t know what to choose for my car?
Tell us your vehicle and what you want to improve (sound, bass, CarPlay, etc.). We’ll recommend the exact products that fit your car and your budget.
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