Alpine R2-W12D4 campus This speaker’s reduced mounting depth

This speaker’s reduced mounting depth and RMS Power Rating of 100 W making it easily applicable into any build

The PRO-DRN3 is best suited for competition-grade enthusiasts and professional installers seeking reliable

the sub sounds fat – but keeps it thin

The special diameter allows front mounting

@6db/octave to 48db/octave

Alpine R2-W12D4 campus This speaker’s reduced mounting depthFeatured in our article: Best 12" car subwoofers for 2026 12" subwoofer with dual 4 ohm voice coils Kevlar reinforced pulp cone with HAMR Santoprene rubber surround frequency response: 24 200 Hz power handling: 300 750 watts RMS (375 watts per coil) peak power: 2250 watts sensitivity: 84. 6 dB top mount depth: 6. 47" sealed box volume: 0. 65 1. 1 cu. ft. ported box volume: 1. 1 1. 6 cu. ft.