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Alpine SS-SB12
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Real installer support before and after purchase
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Alpine SS-SB12 12-Inch S-Series Shallow Preloaded Subwoofer Enclosure
Product Overview:
The Alpine SS-SB12 is the 12-inch version of Alpine's ultra-shallow S-Series enclosures. Measuring only 5.25 inches deep, this unit is specifically designed for customers who want the deep, low-frequency impact of a 12-inch driver without sacrificing limited cabin or cargo space. Its downward-firing, sealed design allows it to be installed under seats or in truck cabs while remaining protected from shifting items.
Features
Innovative Front-Mounted Motor
The SS-SB12 features a unique front-mounted neodymium magnet motor. By placing the motor assembly in front of the cone rather than behind it, Alpine significantly reduced the overall depth of the enclosure while still allowing for a massive 22mm of peak-to-peak linear excursion. This ensures the driver moves enough air to deliver true 12-inch bass performance from a shallow footprint.
Advanced Precise Bass Control
Equipped with Alpine’s Gen2 DD-Linear Magnetic Circuit technology, this subwoofer uses a dual-gap voice coil structure for maximum efficiency. This provides the driver with exceptional control over the motor, resulting in precise, punchy bass with lower distortion than typical shallow-mount designs.
Rugged, Weather-Resistant Build
Built to handle more than just a trunk environment, the enclosure is constructed from a rugged polymer composite that is IPX-rated for water resistance. This makes it an ideal choice for placement under seats where moisture from floor mats might be an issue, or for use in utility vehicles where durability is a top priority.
Flexible Down-Firing Installation
The enclosure includes four adjustable, foam-padded steel mounting brackets. These brackets can be oriented in multiple directions to fit various vehicle floors and contours, while the integrated foam padding helps reduce unwanted vibrations. The down-firing configuration naturally uses the vehicle's floor to reinforce the bass while shielding the speaker cone from damage.
Technical Specifications
| Category | Specification |
| Performance | |
| Subwoofer Size | 12-Inch S-Shallow |
| Power Handling | 300W RMS / 600W Peak |
| Nominal Impedance | 2-Ohm (Dual 4-Ohm internally wired) |
| Frequency Response | 30Hz – 200Hz |
| X-Max (Linear) | 11mm (one-way) |
| Construction | |
| Enclosure Type | Sealed Down-Firing |
| Cabinet Material | IPX-Rated Water-Resistant Polymer |
| Cone Material | Polypropylene |
| Voice Coil | 2.0" (50mm) Copper |
| Dimensions | |
| Width | 22.25" |
| Height | 5.25" |
| Depth | 13.125" |
| Weight | Approx. 10.0 lbs |
- 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 SS-SB12
Sale price$599.95
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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Verified Vehicle Fit
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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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