Alpine S2-W8D2 Next Gen S-Series 8" 900W Peak Power Handling at 2 Ohms, Dual Voice Coils Car Subwoofer
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What's Inside?
- • (1) 8" Dual 2-ohm voice coil subwoofer
- • Trim ring (installed)
- • (2) 3" jumper cables (each has a single banana connector on each end)
- • 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-W8D2 Component Car Subwoofer?
Big Bass in a Compact Package
Give your system the bass it’s been missing with the Alpine S2-W8D2 8-inch S-Series subwoofer. With 300W RMS / 900W peak power handling and a 23Hz–215Hz frequency response, it delivers deep, punchy bass without taking up the space of a larger subwoofer.
Built for Deep, Clean Bass
The S2-W8D2 combines a lightweight carbon fiber/polypropylene cone with Alpine’s H.A.M.R. surround for powerful, controlled bass and up to 13mm of one-way excursion. Its dual 2-ohm voice coils also provide flexible wiring options for building your ideal car audio setup.
Ready to Power Up
Pair this 8-inch car subwoofer with the Alpine S2-A60M 600-watt mono amplifier for a perfectly matched system. If you want more impact, the S2-A120M can power up to four S2-W8D2 subwoofers. Compact, powerful, and built for enthusiasts, the S2-W8D2 is an easy way to add serious bass to your ride.
Alpine 8-Inch Subwoofer Comparison Chart | S2-W8D4/S2-W8D2 vs R2-W8D4/R2-W8D2
| Ultimate Alpine 8" Subwoofer Performance Comparison |
S2-W8D4 / S2-W8D2
Next-Gen S-Series 8" Subwoofer – Powerful Bass Performance with Flexible Dual Voice Coil Options
BEST VALUE
- • 8" S-Series Subwoofer
- • 300W RMS / 900W Peak Power
- • Dual 2Ω or Dual 4Ω voice coil options
- • 13mm X-Max for strong bass excursion
- • Wide 23Hz–215Hz frequency response
- • H.A.M.R. surround design
- • Twist-Lock grille compatible
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R2-W8D4 / R2-W8D2
Next-Gen R-Series 8" Subwoofer – High-Output Bass Performance with a Stronger Motor Structure
HIGH PERFORMANCE
- • 8" R-Series Subwoofer
- • 350W RMS / 1000W Peak Power
- • Dual 2Ω or Dual 4Ω voice coil options
- • 12mm X-Max for controlled excursion
- • 30Hz–200Hz frequency response
- • Heavy-duty 56 oz magnet structure
- • H.A.M.R. surround design
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Alpine S-Series 8" Subwoofer Highlights
POWER HANDLING
300W RMS / 900W Peak
Handles up to 300 watts RMS and 900 watts peak power for powerful low-frequency performance from a compact 8-inch subwoofer.
CARBON FIBER CONE
Rigid Carbon Fiber / Polypropylene Cone
The carbon fiber and polypropylene cone construction provides a lightweight, rigid design for accurate, controlled bass reproduction.
H.A.M.R. SURROUND
High-Excursion H.A.M.R. Surround
Alpine H.A.M.R. surround technology allows up to 13mm of one-way X-Max for increased cone movement and strong, controlled bass output.
DUAL VOICE COIL
Flexible DVC Configuration
Available in dual 2-ohm and dual 4-ohm voice coil configurations, giving you flexible wiring options for different amplifier setups.
FREQUENCY RESPONSE
23Hz–215Hz Bass Response
The wide 23Hz–215Hz frequency response delivers deep low-end extension while maintaining smooth and detailed bass across a broad range.
TWIST-LOCK GRILLE
Twist-Lock Grille Mounting
The Twist-Lock grille system provides a clean, secure way to add an optional protective grille while maintaining the subwoofer's sleek appearance.
MAGNET STRUCTURE
High-Grade Ferrite Magnet
A high-grade strontium ferrite magnet provides the motor strength needed for reliable excursion and powerful bass performance.
Alpine S2-W8D4 / S2-W8D2 Recommended Amplifiers | Best 8" S-Series Subwoofer Amp Pairings for Powerful Bass
Build Your Alpine S-Series 8" Subwoofer System
Real-world amplifier recommendations for Alpine S2-W8D4 and S2-W8D2 subwoofers, from compact single-sub setups to multi-sub bass systems
Amplifier Matching Overview
S2-W8 Power Rating: 300W RMS / 900W Peak per subwoofer
Ideal Amp Range: Approximately 250W – 350W RMS per subwoofer
S2-W8D4: Dual 4Ω voice coil configuration
S2-W8D2: Dual 2Ω voice coil configuration
Best Setup: Alpine S2-A60M 600W mono amplifier for up to two S2-W8 subwoofers
Best Overall Match – 600W S-Series Mono Amplifier
The S2-A60M is Alpine's recommended power match for up to two S2-W8 subwoofers. It delivers 330W RMS at 4Ω and 600W RMS at 2Ω or 1Ω, making it an excellent choice for maximizing the output of one or two 8" S-Series subwoofers.
Best Compact Option – Space-Saving Mono Amplifier
A compact mono amplifier option for a single S2-W8 when installation space is limited. Its small chassis makes it ideal for tight installations where a full-size amplifier may not fit.
Best Multi-Sub Upgrade – 1200W S-Series Mono Amplifier
The S2-A120M is designed for larger S-Series bass systems. With up to 1,200W RMS at 1Ω or 2Ω, it provides substantial power for multiple S2-W8 subwoofers and future system expansion.
Best High-Power Alternative – R-Series Mono Amplifier
The R2-A75M offers additional power headroom for enthusiasts who want to build a higher-output system around the S2-W8 platform. It is best suited to systems where additional subwoofers or future upgrades are planned.
Why the S2-A60M Is the Recommended Choice
Alpine Power Matching: Alpine specifically recommends the S2-A60M for powering up to two S2-W8 subwoofers
600W RMS Output: Delivers 600W RMS at 1Ω or 2Ω, providing approximately 300W per subwoofer when powering two S2-W8s
Flexible Impedance: Supports 4Ω, 2Ω and 1Ω operation for flexible system configurations
Class-D Efficiency: Efficient amplifier design provides strong bass output without the size of a traditional high-power amplifier
Built-In Controls: Includes adjustable crossovers and bass EQ for easier subwoofer system tuning
S2-W8D2 vs S2-W8D4 Amplifier Matching
S2-W8D2: Dual 2Ω voice coils provide 1Ω or 4Ω final impedance options per subwoofer
S2-W8D4: Dual 4Ω voice coils provide 2Ω or 8Ω final impedance options per subwoofer
Best Practice: Choose the D2 or D4 version based on the final impedance required by your amplifier and overall system wiring
Two-Sub Setup: Wire the subwoofers to achieve an amplifier-safe final impedance before connecting them to the S2-A60M
Recommended S2-W8 Amplifier Settings
Gain Setting: Set gain according to the head unit's output and use a clean test signal to avoid clipping
Low-Pass Filter: Start around 80Hz and adjust according to the vehicle, enclosure and front speaker system
Bass EQ: Keep boost moderate and prioritize clean amplifier output over excessive bass enhancement
Subsonic Filter: Use when running a ported enclosure to help protect the subwoofer below the enclosure's tuning frequency
Phase: Adjust phase to achieve the strongest and smoothest bass integration with the front speakers
Recommended System Configurations
Single S2-W8: Target approximately 300W RMS for a strong balance of output and reliability
Dual S2-W8: Target approximately 600W RMS total, or about 300W RMS per subwoofer
Compact Build: Pair one S2-W8 with the KTA-200M when installation space is the priority
Best Overall Build: Pair one or two S2-W8 subwoofers with the S2-A60M for Alpine-matched performance
Multi-Sub Build: Step up to the S2-A120M when running multiple S2-W8 subwoofers or planning future expansion
Pro Tip: For the best balance of output, efficiency and system compatibility, the Alpine S2-A60M is the standout match for the S2-W8 series. Alpine specifically rates the S2-A60M for powering up to two S2-W8 subwoofers, making it an excellent choice for both single- and dual-8" builds.
Frequently Asked Questions (FAQ)
- • Is an 8-inch subwoofer enough to noticeably improve my car's bass?
Yes, an 8-inch subwoofer can produce tight, responsive bass while requiring less enclosure space than larger models. It is a great choice for compact vehicles or anyone looking to enhance bass without sacrificing cargo space.
- • Why does the bass sound weak after I installed the subwoofer?
Weak bass is usually caused by incorrect amplifier gain, crossover settings, or an enclosure that doesn't meet the recommended specifications. Proper tuning and verifying the enclosure design typically improve low-frequency performance.
- • Can I wire the dual 2-ohm voice coils in different configurations?
Yes, the dual voice coil design supports multiple wiring options depending on your amplifier's impedance requirements. Following the proper wiring diagram ensures reliable performance and protects your equipment.
- • What size amplifier should I pair with this subwoofer?
An amplifier whose RMS output closely matches the recommended continuous power rating will provide the best balance of performance and reliability. Proper amplifier matching also helps reduce distortion and extends the life of the subwoofer.
- • Why does the subwoofer sound distorted at higher volume levels?
Distortion is commonly caused by amplifier clipping, excessive gain settings, or too much bass boost. Lowering the gain and properly adjusting the crossover usually restores clean and accurate bass reproduction.
- • How do I wire it for the lowest possible impedance, and is that safe for my amp?
The dual 2-ohm voice coils can be wired in parallel for a 1-ohm final load using the included configuration jumpers, but you should only do this if your amplifier is rated stable at 1 ohm. Wiring it incorrectly for your amp's minimum impedance can cause overheating or trigger the amp's protection mode.
- • Does this subwoofer need a break-in period?
Yes, many users notice smoother bass response after several hours of moderate listening. This allows the suspension components to loosen naturally and perform more consistently over time.
- • Why does my car rattle more after installing it?
The stronger bass output can cause loose interior panels, trim pieces, and license plates to vibrate. Installing sound-deadening material and securing loose components can significantly reduce unwanted rattles.
- • Can I run two of these off a single amplifier without buying two separate amps?
Yes, the S2-A60M mono amp is specifically rated to power up to two of these subwoofers at once, making a dual-sub setup straightforward without needing separate amplifiers. Just be sure the combined wiring configuration keeps the final impedance within what that amp supports.
Alpine S2-W8D2 Related Videos
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Learn How To Wire Subwoofers
- Diameter : 8 Inch
- Sensitivity : 83.4 dB
- Impedance : 2 Ohm
- Frequency Response : 34 - 200 Hz
- Peak Power Handling : 900 Watts
- Number of Voice Coils : Dual
- RMS Power Handling : 300 Watts
- Free Air : No
Features:
- Dual Voice Coil (DVC) Subwoofers with Configuration Jumpers: Easily switch between 1-ohm and 4-ohm configurations for versatile system setup.
- Carbon Fiber / Polypropylene Cone: Lightweight yet strong for responsive, distortion-free bass performance.
- Polypropylene / Ceramic Dust Cap: Enhances cone rigidity and durability while maintaining clean, accurate output.
- High-Grade Strontium Ferrite Magnets: Provides strong magnetic force for tight and impactful bass reproduction.
- Twist-Lock Grille Mount System: Simplifies grille installation and ensures secure protection (grilles sold separately).
- High-Amplitude Multi-Roll (H.A.M.R.) Surround: Enables long cone travel for deeper, more controlled bass response.
- Push-Type Speaker Terminals (Up to 8AWG Wire Size): Supports large-gauge wiring for improved current delivery and easy installation.
Specifications:
- Size: 8-inch
- Impedance (Ohms): 1, 4
- Cone Material: Carbon Fiber / Polypropylene
- Surround Material: Rubber
- Basket Material: Steel
- Grille: None included
- Free-Air: No
- Dual Voice Coil: Yes
- Sensitivity: 82.6 dB at 1 watt
- Frequency Response: 35 – 215 Hz
- Max RMS Power Handling: 300 watts
- Peak Power Handling (Watts): 900 watts
- Top Mount Depth (inches): 3 7/8
- Bottom Mount Depth (inches): N/A
- Cutout Diameter or Length (inches): 6 7/8
- Frame Width: 8.268
- Frame Length: 8.268
- Vas (liters): 7.2
- Fs (Hz): 46.5
- Qts: 0.59
- Xmax (millimeters): 10
- UPC: 793276085276
- Weight: 8
- 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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Perfect for tight spaces. You do not have to find a huge enclosure for it to fit. Sound is quality is excellent for the price.
