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Rockford Fosgate PM212S4

12" 4-ohm marine subwoofer (White with stainless steel grille)

Item # 575PM212S4

On land or sea, you need a quality subwoofer if you're serious about sound.

On land or sea, you need a quality subwoofer if you're serious about sound.

Discontinued item

Item # 575PM212S4

About the Rockford Fosgate PM212S4

Serious bass for boaters

On land or sea, you need a quality subwoofer if you're serious about sound. Rockford Fosgate designed their PM212S4 marine subwoofer to bring powerful bass to marine and powersports applications. With True Marine Grade components inside and out, this 12" sub will rock your boat for seasons to come.

Serious bass for boaters

On land or sea, you need a quality subwoofer if you're serious about sound. Rockford Fosgate designed their PM212S4 marine subwoofer to bring powerful bass to marine and powersports applications. With True Marine Grade components inside and out, this 12" sub will rock your boat for seasons to come.

Ideal for lots of applications

Powerful enough for any style of music and versatile enough to work in sealed, vented, or infinite baffle installations, the PM212S4 is a great choice for anyone who's building a high-performance marine audio system. Rockford Fosgate designed the sub's internal works and suspension to stand up to the pounding of big waves and choppy water, so it'll never miss a beat — and neither will you.

Made for marine and outdoor use

The PM212S4 features a rugged, removable stainless steel sport grille that looks great and stands up to blistering sunlight and damaging moisture. Underneath the UV-stable Centrex® injection molded shell and durable Thermo-Plastic Elastomer (TPE) surround, you'll find a polypropylene cone that's treated with UV inhibitors, plus a moisture- and tear-resistant Aramid fiber spider. Simply put, this sub will provide great bass on your boat for a long, long time.

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Product highlights:

  • 12" 4-ohm marine subwoofer
  • injection-molded mineral-filled parabolic polypropylene cone with TPE surround
  • durable aramid-fiber spider
  • UV-stable Centrex® injection-molded plastic parts
  • corrosion-resistant, spring-loaded push terminals
  • suitable for sealed, vented, or infinite baffle installations
  • power handling: 300 watts RMS (600 watts peak)
  • top-mount depth: 6-1/8"
  • sensitivity: 87 dB
  • warranty: 2 years
  • Our 60-day money-back guarantee
  • MFR # PM212S4

What's in the box:

  • One 12" Marine subwoofer
  • White polymer and stainless steel grille
  • Four 2-1/4" Stainless-steel Allen head screws
  • Four 1-1/4" Stainless-steel Allen head screws
  • 4mm Allen head bit
  • Owner's manual (English/ French/ Spanish/ German/ Italian)

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More details on the Rockford Fosgate PM212S4

Pat M.

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Features

Woofer: The subwoofer features an injection-molded, mineral filled polypropylene cone with UV inhibitors. The TPE (Thermo-Plastic Elastomer) surround is also UV and salt/fog resistant.

Klippel Verified: The Klippel distortion analyzer, a device that uses a laser and sophisticated software to do large-scale analysis of drivers in motion, lets Rockford Fosgate optimize the sub's motor structure, voice coil alignment, and suspension to yield the best possible performance.

Centrex Basket: The basket and other plastic parts are made of UV stable Centrex injection molded plastic.

Magnetic Shielding: The motor structure is magnetically shielded to reduce the potential for electromagnetic interference.

Compression Terminals: The PM212S4 features spring terminals which accommodate pin connectors, single banana plugs, dual banana plugs (standard 3/4" width) or bare speaker wire up to 8 gauge.

VAST Surround: The Vertical Attach Surround Technique (VAST) increases a speaker's effective radiating cone area without increasing the size of the basket.

FlexFit Basket: The Flex Fit frame utilizes slots (where possible) instead of single screw sized holes; allowing slight adjustment of the speaker when mounted.

Mounting Hardware: Marine-grade stainless-steel mounting screws are included.

Enclosure: The PM212S4 can be mounted in a sealed or ported box, or in an infinite-baffle (free-air) application. The optimum internal volume of a sealed enclosure is 1.25 ft³ (accounting for the displacement of the woofer), from 0.95 to 2.05 ft³ is acceptable. The 1.25 ft³ enclosure yields a -3dB point of 53.7 Hz. The best ported enclosure volume is 1.76 ft³ using one 3" diameter x 5.75" long port; this yields a tuning frequency of 40 Hz and a -3dB point of 37.2 Hz.

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Customer Q&A

Q
Crutchfield asked: Why did you buy this?
A
I was looking for a 12" model for a free air application. [ Scott  May 12, 2017 ]

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