Car Subwoofer Placement: Optimal Positions for Maximum Bass
Putting a subwoofer in the right spot in your car is really important for the best sound and bass...
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Alpine
Alpine RS-W12D2 | R-Series Shallow 12 inch Subwoofer | Dual 2 Ohm
SKU: RSW12D2
$ 799.99
QUICK SPECS
- Power: 600W RMS | 1800W Peak | Dual 2 Ohm (1 ohm parallel, 4 ohm series)
- Fitment: 3.25 in mounting depth | 11-5/8 in cutout | 12.82 in frame | 0.05 cu ft displacement
- Box: Sealed, Alpine range 0.6 to 1.5 cu ft net | Recommended 0.60 / 0.90 / 1.20 cu ft
- Motor: 4 in voice coil | Neodymium | 20 mm Xmax | Fs 28 Hz | Vas 42.04 L
Alpine RS-W12D2 | R-Series Shallow 12 inch Subwoofer | Dual 2 Ohm
Regular price
$ 799.99
Sale price
$ 799.99
Regular price
Unit price
INSTALLER'S TAKE
Product Details
Specifications
Enclosures
FAQs
Related Video
Alpine R-Series Shallow Subwoofer
Alpine RS-W12D2 12 Inch Shallow Subwoofer
600 watts RMS and 20 mm of Xmax from 3.25 inches of mounting depth. The RS-W12D2 gives a shallow 12 the same cone travel as Alpine's full-size R2 woofers, driven by a 4 inch voice coil and a neodymium motor, with dual 2 ohm coils for low-impedance wiring.
600W RMS
3.25 in Depth
20 mm Xmax
Dual 2 Ohm
Full-Size Excursion in a Shallow Basket
Most shallow 12s give up excursion to save depth. The RS-W12D2 keeps 20 mm of one-way linear excursion and 54 mm of peak-to-peak mechanical travel in a 3.25 inch mounting depth. The cutout is 11-5/8 inches (295 mm), the frame is 12.82 inches across, and the driver displaces only 0.05 cubic feet, so it fits behind truck seats, in thin floor boxes and anywhere a full-depth 12 will not clear.
Alpine's Gen2 DD Linear dual magnetic gap keeps the 4 inch voice coil under control at high excursion for lower distortion, and a neodymium magnet keeps the motor light and short. The coil former is vented, a cooling fin draws heat off the voice coil, and the frame is die-cast aluminum with a removable trim ring and an aluminum dust cap. The trim ring accepts Alpine's KTE-RS12G grille kit, sold separately.
Wiring the Dual 2 Ohm Coils
One woofer: coils in parallel give a 1 ohm load, coils in series give 4 ohms.
Two woofers: wire each in series to 4 ohms and parallel the pair for a 2 ohm load.
Alpine rates the RS-W12D2 at 600 watts RMS and 1800 watts peak, with a recommended amplifier range of 500 to 600 watts RMS per woofer.
Alpine's Recommended Sealed Boxes
Alpine designs the R-Series Shallow for sealed enclosures and gives a sealed range of 0.6 to 1.5 cubic feet net for the 12. These are Alpine's own recommended boxes, built from 3/4 inch MDF, with the F3 and Fb figures Alpine publishes for each.
| Size | External (W x H x D) | Gross | Net | F3, Fb |
|---|---|---|---|---|
| Small | 18" x 15" x 6.5" | 0.65 cu ft | 0.60 cu ft | 35 Hz, 49 Hz |
| Medium | 22" x 16" x 7" | 0.95 cu ft | 0.90 cu ft | 30.5 Hz, 43 Hz |
| Large | 21" x 16" x 9" | 1.25 cu ft | 1.20 cu ft | 29 Hz, 40 Hz |
Enclosures We Cut for the RS-W12
We build two Proline X down fire sealed cabinets for this driver in Tullahoma, Tennessee, with the 11-5/8 inch cutout and 3.25 inch mounting depth cut direct fit:
- Down fire sealed 12 inch enclosure for one RS-W12, 0.70 cubic feet net.
- Down fire sealed dual 12 inch enclosure for a pair, 0.70 cubic feet net per chamber.
Both are listed in the Enclosures tab on this page. For a smaller space, see the Alpine RS-W10D4 shallow 10, and every cabinet we cut for Alpine drivers is in our Alpine subwoofer box collection.
Questions About Fitment or Wiring?
Call 931-563-5151 and talk to someone who installs these. We will help you pick the load and the box for your vehicle.
| Alpine RS-W12D2 Specifications | |
|---|---|
| Power and Configuration | |
| Model | RS-W12D2 |
| RMS Power Handling | 600 Watts |
| Peak Power Handling | 1800 Watts |
| Recommended Amplifier Power | 500 to 600 Watts RMS |
| Voice Coil | Dual 2 Ohm (1.8 + 1.8 ohms DC) |
| Wiring Options | 1 ohm parallel / 4 ohm series |
| Voice Coil Diameter | 4 in (100 mm) |
| Sensitivity (1W/1m) | 81 dB |
| Frequency Response | 25 to 100 Hz |
| Thiele-Small Parameters (Alpine) | |
| Fs | 28 Hz |
| Qes | 1.15 |
| Qms | 6.53 |
| Qts | 0.98 |
| Vas | 42.04 L (1.48 cu ft) |
| Sd | 572 cm2 |
| Xmax (one way) | 20 mm |
| Xmech (peak to peak) | 54 mm |
| Enclosure (Alpine) | |
| Sealed Range, Net | 0.6 to 1.5 cu ft |
| Recommended Sealed Boxes | 0.60, 0.90 or 1.20 cu ft net |
| Fitment and Physical | |
| Mounting Depth | 3.25 in (82.9 mm) |
| Cutout Diameter | 11-5/8 in (295 mm) |
| Frame Diameter | 12.82 in (325.6 mm) |
| Trim Ring Diameter | 13.53 in (343.6 mm) |
| Driver Displacement | 0.05 cu ft |
| Magnet | Neodymium |
| Frame | Die-cast aluminum, removable trim ring |
| Grille | KTE-RS12G grille kit, sold separately |
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