Rockford Fosgate M212S4B12" Marine Subwoofer - Black
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.
Highlights
- 1 Year Warranty
- Moisture, tear and fatigue resistant Aramid fiber spider
- Linear, high excursion matched motor magnetics and suspension design
- Removable trim ring/grille
Key specs
Full specs- Power Handling (Watts RMS)
- 300 Watts RMS 600 Watts Max
- Size
- 12"
- Nominal Impedance
- 4-Ohm
- Speaker Connector
- Corrossion resistant 8 AWG spring load
- Mounting Depth
- 6.58 in. (16.72 cm)
- Shipping Weight
- 20.1 Lbs. (9.15 Kg.)
- Voice Coil Diameter
- 1.95" (49.53 mm)
- SPL (dB @ 1w/1m)
- 87
Key specs
Full specs- Power Handling (Watts RMS)
- 300 Watts RMS 600 Watts Max
- Size
- 12"
- Nominal Impedance
- 4-Ohm
- Speaker Connector
- Corrossion resistant 8 AWG spring load
Highlights
Overview- 1 Year Warranty
- Moisture, tear and fatigue resistant Aramid fiber spider
- Linear, high excursion matched motor magnetics and suspension design
Overview
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.
Highlights
Key features
- 1 Year Warranty
- Moisture, tear and fatigue resistant Aramid fiber spider
- Linear, high excursion matched motor magnetics and suspension design
- Removable trim ring/grille
- UV stable Centrex® injection molded plastic parts
- Injection molded mineral filled parabolic polypropylene cone body with UV inhibitors
- UV and Salt-Fog resistant TPE (Thermo-Plastic Elastomer) surround
- Internal magnetic shielding
- Fully insulated ultra-flexible lead wire
- High temperature Kapton® former with polyimide insulated copper wire
- Proprietary corrosion resistant gold plated bare-wire input push-type terminals
- True Marine Grade compliance
More info
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.
Technologies
CEA-2031
Power handling on Rockford Fosgate speakers conform to CEA-2031 industry standards. This means your speaker has
Patent: Patent Pending
VAST Surround - Marine
Rockford Fosgate's proprietary surround technique, VAST, provides up to a 25% increase in the speakers effective
FlexFit Basket - Marine Sub
The slot mounted frame pattern allows fine-tuning of the subwoofer's mounting position.
ASTM Test Standards
ASTM B117 salt/fog test standard provides accelerated aging in a controlled corrosive environment to produce
Specs
Specifications
20
| Power Handling (Watts RMS) | 300 Watts RMS 600 Watts Max |
| Size | 12" |
| Nominal Impedance | 4-Ohm |
| Speaker Connector | Corrossion resistant 8 AWG spring load |
| Mounting Depth | 6.58 in. (16.72 cm) |
| Shipping Weight | 20.1 Lbs. (9.15 Kg.) |
| Voice Coil Diameter | 1.95" (49.53 mm) |
| SPL (dB @ 1w/1m) | 87 |
| Woofer Displacement | 0.053 cu.ft. (1.50 Liters) |
| Le (mH) | 0.3 |
| Qes | 0.55 |
| Qms | 9.00 |
| Cutout Diameter | 10.95 in. (27.82 cm) |
| Re (Ohms) | 3.10 |
| Fs (Hz) | 35 |
| Qts | 0.52 |
| Vas (Liters) | 44.3 |
| Xmax (mm) | 12.0 |
| Sd (cm2) | 510 |
| Magnet Weight (oz) | 93.6 oz. (2.65 kg.) |
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Installation resources
Wiring diagrams
6
Wiring Diagram #1
Source: Rockford Fosgate
Wiring Diagram #2
Source: Rockford Fosgate
Wiring Diagram #3
Source: Rockford Fosgate
Wiring Diagram #4
Source: Rockford Fosgate
Wiring Diagram #5
Source: Rockford Fosgate
Wiring Diagram #6
Source: Rockford Fosgate
Box Advisor
Sealed Enclosure
- Recommended volume
- 1 cu ft
- Volume range
- 0.7 cu ft to 1.8 cu ft
- Dimensions
- 17.63 in W x 15.5 in H x 12 in D
- F3
- 53.7 Hz
- Qtc
- 0.82
- Port / ID
- 95 in
- Subwoofer size
- 103 in
- Impedance
- 1 ohm
- Power handling (RMS)
- 300 W
Vented Enclosure
- Recommended volume
- 1.5 cu ft
- Volume range
- 1.2 cu ft to 2 cu ft
- Dimensions
- 20.25 in W x 15.5 in H x 12.5 in D
- F3
- 37.2 Hz
- Tuning (Fb)
- 40 Hz
- Port / ID
- 101 in
- Subwoofer size
- 103 in
- Impedance
- 1 ohm
- Power handling (RMS)
- 300 W
Support
Return Authorization
If you bought this product from Onkar Electronics, use the Contact Us page on the Onkar Electronics website and we will help with return authorization and warranty support. If you purchased it from another dealer, contact that authorized dealer first for return assistance.
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