Product highlights

12" shallow-mount subwoofer with dual 4-ohm voice coils 

polypropylene cone with aluminum dust cap and butyl rubber surround 

cast aluminum frame 

frequency response: 25-100 Hz 

power handling: 600 watts RMS (300 watts per coil) 

peak power: 1800 watts 

sensitivity: 81 dB 

top-mount depth: 3.301" 

sealed box volume: 0.65-1.55 cu. ft. 

grille not included 

warranty: 1 year 

What's in the box

• One 12" Dual 4-ohm voice coil shallow mount subwoofer 
• Plastic trim ring 
• Two 18" jumper wires (12-gauge) 
• 2.5mm Hex key 
• Application guide (English/ French) 
• On-line product registration information 
• Warranty information (English/ French) 
• Important Notice (English/ French) 

About this item

Written by Crutchfield's Bob Bihlmayer

Shallow-mount upgrade

Alpine's R-Series subwoofers are known for their high power handling and tight response. The new RS-W12D4 shallow-mount sub delivers the same quality in a speaker that'll fit where other subs won't.

Small size, big impact

Built around a solid, cast-aluminum frame, this shallow sub requires a mounting depth of only 3.3 inches. Yet the RS-W12D4's cone excursion is the same as a regular R-Series sub, so you'll enjoy the kind of impact you expect from Alpine.

Fits into your system

This versatile sub sounds great in sealed or ported enclosures. You can wire the dual voice coils for either 2- or 8-ohm total impedance, giving you more wiring options when setting up your system. The sub handles up to 600 watts RMS (1800 watts peak) so make sure you've got a solid amp to power it.