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Alpine S2-W12D2 or D4 Dual 2 or 4 Ohm 12" Subwoofer

Alpine S2-W12D2 or D4 Dual 2 or 4 Ohm 12" Subwoofer

$349.95 AUD
$349.95 AUD
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Impedance
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Description

Alpine S2-W12D2 vs S2-W12D4: 12-Inch S-Series Subwoofers Comparison

The Alpine S2-W12D2 and S2-W12D4 are 12-inch shallow-mount subwoofers from the S-Series, designed for powerful bass in compact spaces. Both feature dual voice coils, 600W RMS power handling, and Hi-Res Audio certification, but differ in impedance for wiring flexibility. Choose D2 (2-ohm) for lower impedance setups or D4 (4-ohm) for stability with higher loads.

Key Differences

  • Impedance: D2 offers 1-ohm or 4-ohm wiring; D4 offers 2-ohm or 8-ohm wiring.
  • Sensitivity: D2 at 84 dB; D4 at 83 dB (minor variance for efficiency).
  • Wiring Flexibility: D2 suits 1-ohm stable amps; D4 for 2-ohm stable systems.

Specifications Table

Specification S2-W12D2 (Dual 2-Ohm) S2-W12D4 (Dual 4-Ohm)
Subwoofer Size 12 inches 12 inches
Impedance Dual 2-Ohm (1-ohm or 4-ohm wiring) Dual 4-Ohm (2-ohm or 8-ohm wiring)
Power Handling (RMS) 600 Watts 600 Watts
Power Handling (Peak) 1,800 Watts 1,800 Watts
Sensitivity (1W/1m) 84 dB 83 dB
Frequency Response 26 Hz - 200 Hz 26 Hz - 200 Hz
Voice Coil Diameter 2.5 inches (65 mm) 2.5 inches (65 mm)
Linear Excursion (X-Max) 15 mm 15 mm
Mounting Depth 3.94 inches (100 mm) 3.94 inches (100 mm)
Cutout Diameter 11.02 inches (280 mm) 11.02 inches (280 mm)
Cone Material Kevlar-Treated Pulp Kevlar-Treated Pulp
Dust Cap Material Polypropylene/Ceramic Composite Polypropylene/Ceramic Composite
Surround Material High Amplitude Multi-Roll (HAMR) Rubber High Amplitude Multi-Roll (HAMR) Rubber
Basket Design Cast Aluminum Cast Aluminum
Recommended Sealed Volume 0.7 - 1.0 cu.ft. (20 - 28 L) 0.7 - 1.0 cu.ft. (20 - 28 L)
Recommended Ported Volume 1.0 - 1.5 cu.ft. (28 - 42 L) 1.0 - 1.5 cu.ft. (28 - 42 L)
Compliance CTA-2031 CTA-2031
Warranty 1 Year 1 Year

Both models are ideal for shallow enclosures, with the D2 better for high-power 1-ohm systems and D4 for stable 2-ohm setups. For precise wiring, consult the manual.