Alpine R2-W12D4 R-Series 12" 750W RMS (2250W Peak Power Handling) 4 Ohm Dual Voice Coil Car Subwoofer
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What's Inside?
- • 12" Dual 4-ohm voice coil subwoofer
- • Plastic trim ring
- • (2) 4.5" jumper wires (each wire has a single banana connector on both ends)
- • Application guide (English/ French)
- • On-line product registration information
- • Warranty information (English/ French)
- • Important Notice (English /French)
- • Owner's Manual
Why Choose Alpine R2-W12D4 Component Car Subwoofer?
Built Like a Beast and Tuned for Clean Bass
The Alpine R2-W12D4 is the kind of subwoofer that doesn’t just play bass—it controls it. At the core is a Kevlar reinforced pulp cone with a two-piece structural parabolic design, giving you serious strength and tear resistance while keeping distortion low even when you push it hard. Add in the oversized inverted polypropylene/ceramic composite dust cap, and you get extra rigidity that keeps everything tight and accurate when the volume climbs.
Big Excursion, Tight Control, and Zero Sloppiness
This sub is all about moving air with purpose. The HAMRS Santoprene surround allows for high-amplitude movement and serious SPL without losing cone stability, so you get deep bass that still stays controlled. A progressive spider with reinforced tinsel leads keeps everything locked in during heavy excursion, eliminating unwanted noise and helping the sub stay consistent no matter how hard you drive it. Underneath it all, the compound radius pole geometry motor design creates a more balanced magnetic field for improved efficiency, cleaner output, and stronger power handling.
Flexible Wiring for Any Setup
No matter how you’re building your system, this sub gives you options. Dual 4-ohm voice coils let you wire it down to 2Ω for more output or up to 8Ω for different amplifier matching setups. The spring post terminals make installation easy, accepting up to 8-gauge wire, pin connectors, or banana plugs without hassle. It even comes with wiring jumpers, so switching between series and parallel configurations is quick and straightforward.
Enclosure Ready for Real-World Bass Performance
The R2-W12D4 is designed to perform in both sealed and ported setups, depending on how you like your bass. In a sealed box, it works best in 0.65 to 1.1 ft³, with 0.85 ft³ giving you that tight, balanced response. If you want more low-end punch, a ported enclosure between 1.1 and 1.6 ft³ tuned to 36 Hz brings out deeper, more aggressive bass. Either way, this sub is built to deliver clean, powerful output that hits hard and stays controlled.
Frequently Asked Questions (FAQ)
- • What type of enclosure works best for this subwoofer?
This subwoofer performs well in both sealed and ported enclosures when built to the recommended specifications. Choosing the correct box design will have a major impact on bass quality and output.
- • Why does the subwoofer sound distorted at high volume?
Distortion is usually caused by amplifier clipping, excessive gain, or an improperly tuned enclosure. Correct amplifier settings and a properly designed enclosure will help produce cleaner bass.
- • Can I wire the dual voice coils in different ways?
Yes, the dual 4-ohm voice coils allow multiple wiring options depending on your amplifier. Always follow the recommended wiring diagrams to achieve the correct final impedance.
- • Why doesn't the subwoofer produce much bass?
Weak bass is often caused by incorrect wiring, improper crossover settings, or a poorly matched enclosure. Double-check the amplifier tuning and verify the enclosure meets the recommended specifications.
- • How much amplifier power does this subwoofer need?
It performs best when paired with an amplifier that delivers power within the manufacturer's recommended RMS rating. Using too little or too much power without proper tuning can reduce performance.
- • What is the best way to route my speaker wires?
To minimize the risk of electrical interference, keep your signal cables physically separated from the vehicle's power and ground wires. Ensure you use heavy-gauge wire, up to 8 AWG, to handle the current requirements and prevent voltage drop.
- • Can I use two of these subwoofers with one amplifier?
Yes, many users install two subwoofers if the amplifier supports the final wired impedance. Plan the wiring carefully to maximize performance while protecting your equipment.
- • Why does the subwoofer smell hot after playing loud music?
A slight odor during the initial break-in period can be normal, but a strong burning smell may indicate overheating or excessive power. Lower the volume and verify that the amplifier is properly tuned.
- • Do I need to break in the subwoofer before using full power?
Yes, many users recommend a short break-in period with moderate volume levels. This allows the suspension to loosen naturally for more consistent performance over time.
- • How do I determine if my amplifier has enough power?
This subwoofer is rated for 750W RMS, so you should use an amplifier that can provide clean power within this range to ensure reliable performance. Using an underpowered amplifier driven into clipping is more likely to damage the voice coils than a properly sized one.
- Diameter : 12 Inch
- Sensitivity : 84.6 dB
- Impedance : 4 Ohm
- Frequency Response : 24-200 Hz
- Peak Power Handling : 2250 Watts
- Number of Voice Coils : Dual
- Suggested Sealed Box Volume : .55 Cubic ft.
- Suggested Ported Box Volume : 1.71 Cubic ft.
- Mounting Depth : 6.5 Inches
- RMS Power Handling : 750 Watts
- Free Air : Yes
Features:
- Kevlar Reinforced Pulp Cone: Two-piece structural parabolic cone with Kevlar reinforcement for added strength, tear resistance, and reduced distortion at high output levels
- Oversized Dust Cap: Inverted polypropylene/ceramic composite dust cap increases rigidity for cleaner performance at extreme volume
- HAMRS Surround Design: Santoprene High Amplitude Multi Roll Surround allows greater excursion and higher SPL without sacrificing cone area
- Progressive Spider: Reinforced spider design with integrated tinsel leads ensures consistent control and eliminates mechanical noise during heavy excursion
- Compound Radius Pole Geometry: Patented motor structure delivers a more symmetrical magnetic field, improving efficiency, reducing distortion, and enhancing power handling
- Dual 4-Ohm Voice Coils: Provides flexible wiring options with 2 Ohm (parallel) or 8 Ohm (series) configurations for system matching
- Spring Post Terminals: Convenient single-side terminals accept up to 8-gauge wire, pin connectors, or banana plugs for easy installation
- Included Wiring Jumpers: Comes with terminal jumpers for quick and simple voice coil wiring in parallel or series configurations
- Sealed Enclosure Compatibility: Works in 0.65 to 1.1 ft³ sealed enclosures, with 0.85 ft³ as the ideal volume for balanced performance
- Ported Enclosure Compatibility: Optimized for 1.1 to 1.6 ft³ ported boxes, with 1.55 ft³ tuned to 36 Hz for deeper, more powerful bass output
Specifications:
- Size: 12-inch
- Impedance (Ohms): 2, 8
- Cone Material: Kevlar Reinforced Paper
- Surround Material: Santoprene Rubber
- Basket Material: Aluminum
- Grille: None included
- Free-Air: No
- Dual Voice Coil: Yes
- Sensitivity: 84.6 dB at 1 watt
- Frequency Response: 24 – 200 Hz
- Max RMS Power Handling: 750 watts
- Peak Power Handling (Watts): 2250 watts
- Top Mount Depth (inches): 6 1/2
- Bottom Mount Depth (inches): N/A
- Cutout Diameter or Length (inches): 10 7/8
- Frame Width: 12.395
- Frame Length: 12.395
- Vas (liters): 32.8
- Fs (Hz): 30
- Qts: 0.51
- Xmax (millimeters): 20
- UPC: 793276084651
- Weight: 15
- 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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Liking these new Alpine subs, got one with a great deal, goes lower, hits truly hard. Excellent value for its performance. Very clean and powerful.