M212S4B

12" Marine Subwoofer - Black M212S4B

The M212S4B is a black 12” subwoofer designed for marine watercraft or powersports applications. It features a stainless steel grille is UV and moisture resistant and can be used in sealed, vented or infinite baffle installations.

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Discontinued
Overview

Rockford Fosgate's M2 marine grade standard takes into account the devastating effects of the outdoor environment and takes extreme measures to ensure optimum performance.

Just because you're on the water doesn't mean you have to go without bass. Put this 12" in your boat and you just may redefine "party barge!" This subwoofer is designed for free air/infinite baffle applications.

  • True Marine Grade compliance
  • UV stable Centrex® injection molded plastic parts
  • Proprietary corrosion resistant gold plated bare-wire input push-type terminals
  • Injection molded mineral filled parabolic polypropylene cone body with UV inhibitors
  • UV and Salt-Fog resistant TPE (Thermo-Plastic Elastomer) surround
  • 16 gauge corrosion resistant removable Stainless Steel grille cover insert
  • Internal magnetic shielding
  • Fully insulated ultra-flexible lead wire
  • High temperature Kapton® former with polyimide insulated copper wire
  • Moisture, tear and fatigue resistant Aramid fiber spider
  • Linear, high excursion matched motor magnetics and suspension design
  • Removable trim ring/grille
  • 1 Year Warranty
Technologies
CEA-2031
CEA-2031

Power handling on Rockford Fosgate speakers conform to CEA-2031 industry standards.

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CEA-2031
CEA-2031

Power handling on Rockford Fosgate speakers conform to CEA-2031 industry standards.

ASTM Test Standards
ASTM Test Standards

Marine Grade standards ensure resistance to extreme environments.

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ASTM Test Standards
ASTM Test Standards

Marine Grade standards ensure resistance to extreme environments.

VAST Surround - Marine
VAST Surround - Marine

The Vertical Attach Surround Technique significantly increases a subwoofer's effective radiating cone area up to 25%.

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VAST Surround - Marine
VAST Surround - Marine

The Vertical Attach Surround Technique significantly increases a subwoofer's effective radiating cone area up to 25%.

FlexFit Basket - Marine Sub
FlexFit Basket - Marine Sub

The slot mounted frame pattern allows fine-tuning of the subwoofer's mounting position.

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FlexFit Basket - Marine Sub
FlexFit Basket - Marine Sub

The slot mounted frame pattern allows fine-tuning of the subwoofer's mounting position.

Specifications
Size
12"
Le (mH)
0.3
Woofer Displacement
0.053 cu.ft. (1.50 Liters)
Cutout Diameter
10.95 in. (27.82 cm)
Qms
9.00
Qes
0.55
SPL (dB @ 1w/1m)
87
Speaker Connector
Corrossion resistant 8 AWG spring load
Voice Coil Diameter
1.95" (49.53 mm)
Nominal Impedance
4-Ohm
Woofer Displacement
0.053 cu.ft. (1.50 Liters)
Cutout Diameter
10.95 in. (27.82 cm)
Qms
9.00
Qes
0.55
SPL (dB @ 1w/1m)
87
Speaker Connector
Corrossion resistant 8 AWG spring load
Voice Coil Diameter
1.95" (49.53 mm)
Nominal Impedance
4-Ohm
Mounting Depth
6.58 in. (16.72 cm)
Power Handling (Watts RMS)
300 Watts RMS
600 Watts Max
Shipping Weight
20.1 Lbs. (9.15 Kg.)
Support

Return Authorization

Contact the Authorized Rockford Fosgate Dealer you purchased this product from. If you need further assistance, call 1-800-669-9899 for Rockford Customer Service. You must obtain an RA# (Return Authorization number) to return any product to Rockford Fosgate. You are responsible for shipment of product to Rockford.


View Process

Wiring Wizard

Available Wiring Diagrams

Please consult your amplifier owner's manual for lowest recommended impedance.













Speaker Polarity

Your woofer may use one of the following to identify (+/-) terminals.

Positive +

Red Post

Purple (4Ω)

Red (8Ω)

Negative -

Black Post

No Dot

No Dot

Speaker Polarity

Your woofer may use one of the following to identify (+/-) terminals.

Positive +

Red Post

Purple (4Ω)

Red (8Ω)

Negative -

Black Post

No Dot

No Dot

Box Advisor
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