Volunteer Audio

Alpine – X-W12D4


12 Inch Subwoofer
  • Peak power handling: 2700 watts
  • Frequency response: 22-200 Hz
  • Warranty: 1 year
  • More Features!

10 in stock


Subwoofer Features

Alpine X-W12D4 Subwoofer

Subwoofer Features


Alpine’s X-Series subwoofers are designed to deliver a loud output while still maintaining the details of your music, so you get the best of both worlds. The X-W12D4 can perform up to 900-watts for a powerful, loud performance. Built with a powerful motor comprised of a premium, elongated voice coil and triple stacked ferrite magnets, you’ll get the most air movement from your sub resulting in accurate sound reproduction for the bass you crave.


While some subwoofer systems focus on volume or clarity, the X-W12D4 gives you both power and accuracy for the clearest imaging in your music. In order to achieve this, Alpine created groundbreaking technology that controls the 48mm of total excursion and cone motion. Dual spiders in the cone ensure a rigid movement that keeps the cone under control. Alpine’s High Amplitude Multi-Roll (HAMR) surround technology is made of rubber to allow the cone to move air while staying cool. These technologies work together to eliminate unnecessary movement and noise that can lead to distortion for the most accurate sound.
Install-Friendly Design
The overbuilt motor and high-controlled suspension in the X-W12D4 allows a small box requirement that can be either sealed or ported based on the desired bass experience. The X-W12D4 has a twist-lock trim ring for easy attachment to the included metal mesh grill. The locking trim ring features an Alpine logo and conceals the mounting screws for a premium fit and finish to your subwoofer enclosure.
Strong Construction
The X-W12D4 was built to handle the loudest music and roughest ride. The subwoofer has a cast aluminum frame and HAMR rubber surround that supports and protects the pulp-mica cone so the subwoofer can move a large quantity of air yet maintain its accuracy.
Alpine: Image Defined
Alpine took the guesswork out of complete sound system building with Alpine Image Defined (ID), an approach to creating sound system “families” that include matching core components that complement each other for the ultimate sound imaging.
Tuned for X-Series
The X-W12D4 can we wired in parallel for a 2Ω to get the most optimized performance from the X-A90M Mono Power Density Amplifier for the best results in your sound system. With 900-watts RMS of power performance, the X-W12D4 benefits from the clean output and low distortion of the X-A90M for the most accurate sound imaging.

Subwoofer Specifications

Alpine X-W12D4 Subwoofer
Voice Coil Dual
DC Resistance (Ω) 2 ohm (Ω)
Peak Power (Watts) 2700W
Continuous Power (RMS) 900W
Sensitivity 84.3 dB at 1 watt
Effective Frequency Range 23 – 200 Hz
Cone Material Pulp-Mica
Surround Material Rubber
X-MAX 24 mm
Thiele/Small Parameters
Resonance Frequency (Fs) 27
Mechanical Q Factor (Qms)
Electrical Q Factor (Qes)
Total Q Factor (Qts) 0.56
Port Information
Free Air No
Recomended Box Volume Sealed 0.97
Recomended Box Volume ported 1.77
Mounting Hole Diameter
Top Mount Depth 7-5/16″
Bottom Mount Depth
Weight 29
Grille No
Warranty 1 Year

Vehicle Information

Additional information

Weight 29 lbs
Dimensions 16.50 × 16.50 × 13.00 in