About the Alpine SWR-12D4
Maximum bass output
Maximum bass output
Alpine's Type-R subwoofers will bring big bass to just about any vehicle. The SWR-12D4 12" sub features a cone made from Kevlar® treated pulp — the same material used to make bulletproof vests — and its durable HAMR Santoprene™ surround allows for huge amounts of excursion. This sub was built for bassheads that want the best of both worlds: accurate response and otherworldly thump.
Bring on the power
The SWR-12D4 can handle an astounding 1000 watts of RMS power, so be sure to choose a suitable amplifier as these bass monsters definitely want lots of power. Its dual oversized 4-ohm voice coils offer the wiring flexibility you'll appreciate as your system changes and grows, so you can always pull maximum power from your amp. It works well in sealed and ported enclosures so you can choose what kind of bass you want to hear and feel.
Note: If you are wiring this DVC sub for lower impedance, make sure that your amp is compatible.
Need an amp for this sub? Check out this Crutchfield-approved bass package.
- 12" subwoofer with dual 4-ohm voice coils
- Kevlar reinforced pulp cone with HAMRS Santoprene rubber surround
- frequency response: 24-200 Hz
- power handling: 300-1,000 watts RMS (500 watts per coil)
- peak power: 3,000 watts
- sensitivity: 84.9 dB
- top-mount depth: 6-3/8"
- sealed box volume: 0.75-1.00 cu. ft.
- ported box volume: 1.25-1.50 cu. ft.
- warranty: 1 year
- Our 60-day money-back guarantee
- MFR # SWR-12D4
What's in the box:
- One 12" Dual 4-ohm voice coil subwoofer
- 1 Rubber concealing ring (installed)
- Two 3" jumper cables (each has a single banana connector on each end)
- Type-R Subwoofer Application Guide (English/ French)
- On-line product registration information (English/ French/ Spanish)
- Warranty information (English/ French)
- Important Notice! (English/ French)
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More details on the Alpine SWR-12D4
Features & specs
|Impedance||2 ohms or 8 ohms|
|Ideal Sealed Box Volume (cubic feet)||0.85|
|Ideal Ported Box Volume (cubic feet)||1.48|
|Port diameter (inches)||N/A|
|Port length (inches)||N/A|
|Dual Voice Coil||Yes|
84.9 dB at 1 watt |
|Frequency Response||24 - 200 Hz|
|Max RMS Power Handling||1000|
|Peak Power Handling (Watts)||3000|
|Top Mount Depth (inches)||6 3/8|
|Bottom Mount Depth (inches)||7 3/16|
|Cutout Diameter or Length (inches)||10 7/8|
|Parts Warranty||1 Year|
|Labor Warranty||1 Year|
Kevlar Reinforced Pulp Cone: This Alpine Type-R subwoofer has a two-piece structural parabolic Kevlar reinforced pulp cone. Kevlar adds strength and tear resistance to the woofer cone while maintaining the benefits of a pulp cone design. There is also an oversized inverted poly-mica dust cap, which increases rigidity and virtually eliminates cone distortion at extreme volume levels.
HAMRS: The woofer features a High Amplitude Multi Roll Surround (HAMRS), made of Santoprene, that allows a large linear excursion and greater SPL. The HAMRS design allows extreme excursions without sacrificing valuable cone area.
Progressive Spider: The progressive Conex spider has reinforced layer tinsel leads to ensure reliable and consistent control of the tinsel leads and eliminate any mechanical noise or interference often seen in high excursion cone designs.
Compound Radius Curve Pole Geometry: Alpine's Patented Compound Radius Curve pole geometry ensures a symmetrical magnetic field, while optimizing flux density to reduce distortion and further improve power handling and output.
Oversized Voice Coil: The oversized (65mm), high-temperature, 4-layer dual voice coils offer increased power handling to 1000W RMS / 3000W Peak.
Dual Voice Coils: For system flexibility, the woofer has two 4-ohm voice coils. When the voice coils are wired in parallel, the woofer presents a 2-ohm load. When the voice coils are wired in series, the woofer presents an 8-ohm load.
Spring Terminals: The spring post terminals are all located on one side of the woofer. The terminals will accept bare wire up to 8 gauge, pin connectors, or banana plugs.
Jumpers: Included with the woofer are two voice coil terminal jumpers. These jumpers allow you to easily wire the voice coils in parallel (for a 2-ohm load) or series (for an 8-ohm load).
Sealed Box Volume: The recommended sealed box volume ranges from 0.65 cubic feet to 1.1 cubic feet, with 0.85 cubic feet being the ideal size.
Ported Box Volume: The recommended ported box volume ranges from 1.1 cubic feet to 1.6 cubic feet. The ideal size is 1.48 cubic feet, using a slot port measuring 12-1/2" (W) x 1" (H) x 19" (L).
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