About the Alpine W12S4

Holding down the BassLine
Holding down the BassLine
If you're a car sound enthusiast, you understand the importance of bass. Alpine shares that view, and they've created the BassLine Series of subwoofers to give you the low-frequency punch you need to create a well-balanced system. You won't just hear the bottom end, you'll feel it. And best of all, Alpine's made these subs affordable so you can fill your vehicle with bass without emptying your savings account.
Built solid
Alpine's BassLine W12S4 12" sub is built around a polypropylene/mica cone that stays stiff at high volumes to avoid distortion. The poly-foam surround and tough steel frame give the cone the support it needs to pump out the volume. This sub handles up to 250 watts RMS and its 4-ohm impedance makes it a great match for most amplifiers.
Subwoofer Wiring Diagrams
To see sample wiring diagrams for all common subwoofer/amplifier combinations, check out this informative article.
Product highlights:
- 12" 4-ohm subwoofer
- polypropylene and mica cone with poly-foam surround
- stamped steel frame
- power handling: 50-250 watts RMS
- peak power: 750 watts
- sensitivity: 87.9 dB
- frequency response: 22-200 Hz
- top-mount depth: 5-5/16"
- sealed box volume: 1.09 cu. ft.
- ported box volume: 1.91 cu. ft.
- grille not included
- warranty: 1 year
- MFR # W12S4
What's in the box:
- One 12" Subwoofer
- Adhesive backed foam gasket
- Application Guide (English/ French)
- On-line product registration information (English/ French/ Spanish)
- Warranty information (English/ French)
- Important Notice! (English/ French)
Reviews (25)
Customer reviews for Alpine W12S4
Loading reviews...
Average review:
5.0 out of 5 starsThanks for submitting your review
Customer photos
This review was collected as part of a promotion
Pros:
Cons:
More details on the Alpine W12S4

Features & specs
Features and Specs | ||
---|---|---|
Size | 12 -inch | |
Impedance (Ohms) | 4 | |
Cone Material | Polypropylene and Mica | |
Surround Material | Poly-Foam | |
Port diameter (inches) | N/A | |
Port length (inches) | N/A | |
Free-Air | No | |
Dual Voice Coil | No | |
Sensitivity |
87.9 dB at 1 watt | |
Frequency Response | 22 - 200 Hz | |
Max RMS Power Handling | 250 | |
Peak Power Handling (Watts) | 750 | |
Top Mount Depth (inches) | 5 5/16 | |
Bottom Mount Depth (inches) | N/A | |
Cutout Diameter or Length (inches) | 10 9/16 | |
Vas (liters) | 64.3 | |
Fs (Hz) | 30 | |
Qts | 0.49 | |
Xmax (millimeters) | 10 | |
Parts Warranty | 1 Year | |
Labor Warranty | 1 Year | |
Box Requirements | ||
Ideal Sealed Box Volume (cubic feet) | 1.09 | |
Minimum Sealed Box Volume (cubic feet) | 0.75 | |
Maximum Sealed Box Volume (cubic feet) | 1.5 | |
Ideal Ported Box Volume (cubic feet) | 1.84 | |
Minimum Ported Box Volume (cubic feet) | 1.43 | |
Maximum Ported Box Volume (cubic feet) | 2.43 |
Product Research
Features
PWR Cone Design: The subwoofer's Progressive Wavelet Ribs (PWR) cone design helps break up standing waves and cone resonances to keep distortion low. The sub uses a polypropylene and mica damped cone assembly and a high-excursion poly-foam surround.
Progressive Polyester Spider: The progressive polyester spider provides accurate control of the subwoofer cone motion.
Two-Piece Yoke: The two-piece yoke uses a vented pole to provide improved air flow and help cool the voice coil.
Spring Terminals: The spring post terminals accept pin connectors, single or dual banana plugs, or bare wire up to 8 gauge.
Sealed Box Volume: The recommended sealed box volume range is from 0.75 ft³ to 1.5 ft³, with 1.09 ft³ being the ideal size.
Ported Box Volume: The recommended ported box volume range is from 1.43 ft³ to 2.43 ft³. The ideal size is 1.84 ft³, using a slot port measuring 12-1/2" (W) x 1" (H) x 10" (L).
Loading accessories...
Customer Q&A
7 questions already asked
Loading articles...
Sound and clarity sure pack a punch and the sound quality is consistent across the board. I've always been a fan of Alpine products and knew what I wanted when I went to purchase my subwoofer.
Sashamarie from Anacortes, WA