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

000 Hz Scope of Delivery

Allows bass adjustment from the driver's seat

Subwoofer)

2-Way Component

Voice Coil Diameter: 25 mm / 1"

Moving Mass (Mms): 3

The HELIX DSP ULRA justifies its name not only in terms of functionality

Experience elite car audio with the Alpine Status HDZ-65

RealCenter)

Cast Aluminum with Dynamic Thermal Management

0 Connectivity: Supports hands-free calling

Installs cleanly behind the rear seat with no vehicle modification required