Garage
Shop

See all parts that fit your 2006 Mark LT

Rockford Fosgate RM112D4B

400W 12" Prime R1 Series Dual 4-ohm Marine Subwoofer

Product videos
highlight-star-icon

• Peak Power: 400W
• RMS Power: 200W
• Injection molded mineral filled polypropylene cone
• UV and salt fog resistant Santoprene surround
• CEA-2031 Compliant & Klippel Verified

Learn more about the rm112d4b

We apologize

This item has been discontinued

NVX - Worth the Envy - Direct to Consumer Car Audio

Loading...
72-5600 main

Metra 72-5600

Install New Speakers in select 1993-2017 vehicles from Ford, Mazda, Mercury

109
-33.36%

$9.99

List price $14.99

FD1426B main

Scosche FD1426B

Double DIN Stereo Dash Kit for select 2004-2009 vehicles from Ford, Mercury, Lincoln (Black)

118
-6.69%

$13.95

List price $14.95

FMK540 main

American International FMK540

Single DIN or Double DIN Stereo Dash Kit for select 2004-2016 vehicles from Ford, Lincoln, Mercury

14
-71.82%

$10.99

List price $39.00

99-5812 main

Metra 99-5812 Dash Kit

Install a new Single-DIN car stereo in select 2004-2016 vehicles from Ford, Lincoln, Mercury

6
-46.68%

$15.99

List price $29.99

FDK11B main

Scosche FDK11B Wiring Harness

Install a new car stereo in select 2004-2009 vehicles from Lincoln, Ford

41
-20.07%

$11.95

List price $14.95

99-5815 main

Metra 99-5815

Single DIN or Double DIN Stereo Dash Kit for select 2006-2014 vehicles from Lincoln, Ford

21
-42.87%

$19.99

List price $34.99

UTE-73BT main

Alpine UTE-73BT

Single DIN Digital Media Receiver with Bluetooth

44
-16.69%

$149.95

List price $180.00

Limited time!
DMH-W3050NEX main

Pioneer DMH-W3050NEX

6.8" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Wireless Apple CarPlay and Android Auto, and Built-in Alexa (Sirius XM Ready)

1
-24.20%

$469.99

List price $620.00

Limited time!
CAR1013 main

Jensen CAR1013

10.1" Single DIN Floating Touchscreen Digital Multimedia Receiver with Bluetooth, Wireless Apple CarPlay and Android Auto

5
-11.43%

$309.99

List price $349.99

DPX305MBT main

Kenwood DPX305MBT

Double DIN Digital Media Receiver with Bluetooth and Built-in Alexa (SiriusXM Ready)

15
-20.50%

$159.00

List price $200.00

Product Highlights


• Peak Power: 400W
• RMS Power: 200W
• Injection molded mineral filled polypropylene cone
• UV and salt fog resistant Santoprene surround
• CEA-2031 Compliant & Klippel Verified

Description


Rockford Fosgate brand icon

Authorized dealer

Rockford Fosgate RM112D4B


Rockford Fosgate RM112D4B - 12" Prime R1 Series Marine Subwoofer

The RM112D4B subwoofer is a 12" Prime R1 subwoofer designed for marine watercraft or powersports applications. It features color matched grille and is UV and moisture resistant. Can be used in sealed, vented or infinite baffle installations. Its CEA-2031 Compliant 200 watts RMS is a perfect fit for a wide range of audio applications especially those that require the capacity to handle power under continuous demand.



UV Inhibitor Materials

Make Mother Nature Shake

Rockford Fosgate engineered the RM112D4B to provide modest power, but enough power to get any party going. With a 2" 4-layer aluminum voice coil, Santoprene surround, and Moisture, tear and fatigue resistant Aramid fiber spider this driver is built to get Mother Nature moving. In addition The driver is Klippel Verified, which means Rockford Fosgate has made the investment to deliver the best possible subwoofers to their customers.



Element Ready

Element Ready

Rockford Fosgate knows that when you shop for speakers for your boat, UTV or motorcycle, you are looking for something that is not only going to sound amazing but stand up to the elements. The driver is equipped with 100% UV stable ASA injection molded plastic parts, including Injection molded mineral filled polypropylene cone body with UV inhibitors and UV and salt fog resistant surround to keep your rocking in even the most daunting surroundings.





General Features:

  • 12" Prime R1 Series Dual 4-ohm Marine Subwoofer
  • Power Handling:
    • Peak: 400 watts
    • RMS: 200 watts
  • CEA-2031 compliant
  • Klippel Verified
  • Injection molded mineral filled polypropylene cone
  • UV and salt fog resistant Santoprene surround
  • 2" 4-layer aluminum voice coil
  • True Marine Grade compliance
  • 100% UV stable ASA injection molded plastic parts
  • Ultra-flexible fully insulated silicone lead wire
  • Proprietary corrosion resistant spring loaded push terminals
  • Moisture, tear and fatigue resistant Aramid fiber spider
  • Removable trim ring/grille included
  • Dual 12 gauge compression terminals
  • Top-mount depth: 4.81"
  • Cutout diameter: 10.87"
  • Frequency Response: 22 - 250 Hz
  • Fs: 29 Hz
  • Qts: 0.64
  • Vas: 3.83 ft³
  • Xmas: 7.0 mm
  • Sensitivity: 88 dB
  • Optimum Sealed Enclosure: 1.65 ft³
  • Optimum Ported Enclosure: 2.45 ft³
  • Infinite Baffle Compatible
  • Also available in Wnite: Rockford Fosgate RM112D4
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty
  • Priced Individually

Check out the Rockford Fosgate RM112D4B Owner's Manual

This item is currently not eligible for our low price guarantee. This may be due to supply constraints, manufacturer restrictions, or another reason. We're always here to help you get the best price possible so give us a call or email today. Our experts will do their best to build the system that works for you within the rules.

Subwoofer Wiring Guide


Wiring Guide to Wire 1 Rockford Fosgate RM112D4B Subwoofer

Mono Amp

2 Channel Amp - Bridged

Wiring Guide to Wire 2 Rockford Fosgate RM112D4B Subwoofers

Mono Amp

Mono Amp - Option 1

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp - Bridged

Wiring Guide to Wire 3 Rockford Fosgate RM112D4B Subwoofers

Mono Amp

4 Channel Amp

Wiring Guide to Wire 4 Rockford Fosgate RM112D4B Subwoofers

Mono Amp

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp


Loading...
REF507CF_2_MET-825601_2 main

2 Infinity REF507CF (INFSPKRF507CFUS) w/ Adapter Plates

390W Peak (130W RMS) 5.25" Reference Series 2-way 3-ohm Component Speaker System with Speaker Adapter Plates

3
-12.14%

$477.88

List price $543.88

DMH-1800NEX main

Pioneer DMH-1800NEX

6.8" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Apple CarPlay, Android Auto, and SiriusXM Ready

3
-19.05%

$339.99

List price $420.00

Limited time!
46CSC654 main

Kicker CSC65 (46CSC654)

600W Peak (200W RMS) 6.5” CS Series 2 Way Coaxial 4-ohm Speakers

124
-33.36%

$79.96

List price $119.99

UTE-73BT main

Alpine UTE-73BT

Single DIN Digital Media Receiver with Bluetooth

44
-16.69%

$149.95

List price $180.00

Limited time!
Club 622 main

JBL Club 622

360W Peak (120W RMS) 6.5" Club Series 2-way Coaxial 3-ohm Speakers

5
-28.58%

$99.95

List price $139.95

CV15BT main

Cerwin-Vega CV15BT

Single Din Digital Media Receiver with Bluetooth

3
Limited time!
DMH-W3050NEX main

Pioneer DMH-W3050NEX

6.8" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Wireless Apple CarPlay and Android Auto, and Built-in Alexa (Sirius XM Ready)

1
-24.20%

$469.99

List price $620.00

43DSC6504 main

Kicker DSC650 (43DSC6504)

480W Peak (120W RMS) 6.5” DS Series 2-way 4-ohm Coaxial Car Speakers (DSC6504)

28
-10.53%

$84.99

List price $94.99

DB652 main

Polk Audio DB652 (DB 652)

600W Peak (200W RMS) 6.5" DB+ Series 2 Way Coaxial 4-ohm Car, Marine and Powersports Speakers

12
-9.16%

$109.00

List price $119.99

XED62 main

Cerwin-Vega XED62

600W Peak (70W RMS) 6.5" XED Series 2-Way Coaxial 4-ohm Speakers

15
-16.67%

$49.99

List price $59.99


Best selling similar products

Marine Club 12 small

JBL CB122 Club Marine 12

• Peak Power: 1200 watts
• RMS Power: 400 watts
• Polypropylene Cone
• Rubber Surround
• Impedance: Single 4 ohm
• Mount depth: 7-13/16"
• Sensitivity: 89 dB

(1)

$119.95

List price $379.95

JBLMARSUBSD102GAM small

JBL Stadium Marine 102 (JBLSUBMASD10AM)

• Peak Power: 900 watts
• RMS Power: 300 watts
• Impedance: 2 or 4 ohm
• Multi-color RGB LED lights
• Plus One Polypropylene Cone
• Rubber Surround
• Mount depth: 4-7/8"
• Sensitivity: 89 dB

$149.95

List price $449.95

STADIUMMW1000AM small

JBL Stadium Marine MW1000 (MW1000AM)

• RMS: 300 Watts / Peak: 900 Watts
• Plus One cones provide more overall speaker-cone area than other cones in its class
• Unique and eye-catching RGB illumination
• Features SSI (Switch-Selectable Impedance), which allows you to choose either 2 or 4 ohm load impedance
• Durable One-piece Polymer basket

$124.49

List price $449.95

M6-8IB-S-GwGw-4 small

JL Audio M6-8IB-S-GwGw-4

• RMS Power: 200 watts
• Impedance: Single 4 ohm
• Injection Molded Polypropylene Cone
• Synthetic Rubber Surround
• Mount depth: 5.07"
• Sensitivity: 86.8 dB

$349.99

List price $349.99

RM110D2B small

Rockford Fosgate Prime R1 RM110D2B

• Peak Power: 400 watts
• RMS Power: 200 watts
• Impedance: Dual 2 ohm
• Injection Molded Polypropylene Cone
• Santoprene Rubber Surround
• Mount depth: 4.4"
• Sensitivity: 88.5 dB

(2)

$189.99

List price $189.99

MV104W small

NVX MV104W

• Peak Power: 500 watts
• RMS Power: 250 watts
• Impedance: Single 4 ohm
• Sports white grille included
• Polypropylene cone material
• Rubber surround material
• Mount depth: 4.78"
• Sensitivity: 86 dB

$159.99

List price $249.99

M6-10IB-S-GwGw-4 small

JL Audio M6-10IB-S-GwGw-4

• RMS Power: 250 watts
• Impedance: Single 4 ohm
• Mica Injected Polypropylene - MIPP Cone
• Synthetic Rubber Surround
• Mount depth: 5.9"
• Sensitivity: 86.1 dB

(3)

$479.99

List price $479.99

M6-8IB-S-GwGw-i-4 small

JL Audio M6-8IB-S-GwGw-i-4

• RMS Power: 200 watts
• Impedance: Single 4 ohm
• Mica Injected Polypropylene - MIPP Cone
• Synthetic Rubber Surround
• Mount depth: 5"
• Sensitivity: 86.8 dB

(1)

$399.99

List price $399.99

M6-8IB-S-GmTi-i-4 small

JL Audio M6-8IB-S-GmTi-i-4

• RMS Power: 200 watts
• Impedance: Single 4 ohm
• Injection Molded Polypropylene Cone
• Synthetic Rubber Surround
• Mount depth: 5"
• Sensitivity: 86.7 dB

$429.99

List price $429.99

DB 1242 DVC small

Polk Audio DB 1242 DVC (DB1242DVC)

• Peak Power: 1110 watts
• RMS Power: 375 watts
• Impedance: Dual 4 ohm
• Polypropylene cone
• Santoprene Rubber surround
• Mount depth: 4.34"
• Sensitivity: 86 dB

(4)

$130.00

List price $149.99

Specifications & Details


Subwoofer Specifications
Series
Prime R1 Series
Subwoofer Size
12"
Peak Power Handling
400 watts
RMS Power Handling
200 watts
Voice Coil(s)
Dual
Impedance (Per Voice Coil)
4 ohm
Xmax (millimeters)
7.0 mm
Subwoofer Design
Round / Circle
Main Cone Color
Black
T/S Parameters (Electromechanical)
Free-Air Resonance (Fs)
28.5 Hz
Equivalent Compliance (Vas)
107.7 liters
Total Speaker Q Value (Qts)
0.59
Electrical Q Value (Qes)
0.62
Electrical Resistance of Voice Coil (Re)
3.7 ohm
Mechanical Q Value (Qms)
10.06
What is in the box?
Paperwork
User manual
WITB: Subwoofers
Subwoofer
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Item Details


Manufacturer:

Model Number:

RM112D4B

Weight:

12.13lbs

Internal SKU:

rm112d4b

Internal Product ID:

94340

Product and How-to Videos


Customer Ratings & Reviews


Rockford Fosgate RM112D4B thumbnail image

5 star
100%
4 star
0%
3 star
0%
2 star
0%
1 star
0%



Durability
5
Value
5
Features
5
Design
5
Usability
5

Customer Reviews

Sort by:

Loading...

Awesome

Excellent and clear bass. No issues with installing gives hard-hitting sound.

By Carlo on April 29, 2020 Checkmark Icon Verified purchase

6 found this helpful


excellent price

honestly, for the price these subs play great, there doesn't have a big rms but they pound I have theses playing on a Hifonics Brutus n them kicking ass in my van.

By mechanic on May 26, 2020

2 found this helpful




SonicElectronix-30-Gift-Card small

$30 e-Gift Card at Sonic Electronix

Digital e-Gift Card for value of $30 applies electronically to account

(2)

$30.00

List price $30.00

S2FFFM-074 50/50 (White/Black) small

Skullcandy 50/50 S2FFFM-074 (White/Black)

White and Black 50/50 Series In-Ear Headphones Headset with In-Line Remote/Mic

$30.95

List price $49.99

Aviator White (S6AVFM-158) small

Skullcandy Aviator S6AVFM-158 - White

Skull Candy Aviator Roc Nation Headphones Headset w/ Detachable Cable & In-Line Mic for iPhone/iPod

$99.99

List price $149.99

SQ 6X9-GRAY small

Ground Shaker SQ 6X9-GRAY

6 x 9" Single Square Speaker Box

$12.99

List price $29.95

10SVR-Platinum Wood Grain small

Atrend 10SVR-Platinum Wood Grain

Single 10" Platinum Wood Grain Vented Subwoofer Enclosure

$136.95

List price $189.95

ZD-1350.4D, BAK44 small

Hifonics ZD-1350.4D with Amplifier Wiring Kit

1350W RMS Zeus Delta Series Class-D 4-Channel Car Amplifier

(61)

$199.99

List price $329.98

Club WS1200 small

JBL Club WS1200 (JBLCLUBWS1200BLK)

1000W Peak (250W RMS) 12" Club Series Single 2-or 4-ohm Shallow Car Subwoofer

(2)

$149.00

List price $189.95

Replacement HD 25 SP-II Cable (052708) small

Sennheiser SZ 301 Replacement HD 25 SP-II Cable - 052708

Genuine Original HD 25-SP/HD 420/HD 430 Replacement Cable (1.5 Meter/4.95 Feet)

(1)

$29.95

List price $39.95

SP-PT-240 small

Steele Product Corp SP-PT-240

5 Piece Heat Gun with 2 Heat Settings

$29.99

List price $39.95

Related Searches


Save up to 10 different vehicles in your garage
Vehicle
Store
Delete

2006 Lincoln Mark LT

2003 BMW M3

2017 BMW M2

1997 Ford Probe

1983 Buick Skyhawk

1999 Ford Taurus

1995 Dodge Stealth

1969 Chevrolet Nova

2015 Mazda 3

2020 Jeep Gladiator

Vehicle
Store
Delete

2017 Harley Davidson FLHX Street Glide

Add vehicle Clear all vehicles
Where to find vehicle info
Are you sure you want to clear your garage?
This action cannot be undone. Confirm
This page was not designed for products.
If you continue, you will be redirected to a category customized for your vehicle. Continue
Loading...
Identify your vehicle and submodel details
  • Owner's manual
  • Vehicle's insurance card
  • Vehicle registration
  • Vehicle produced after 2005: Inside driver's side door
  • Vehicle produced before 2005: Rear passenger doorjamb, glove box, center console, or engine compartment
Car Info Side Door Icon
Vehicle Registration Icon
Vehicle Insurance Icon

Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

  • You see only parts engineered for your exact vehicle
  • You avoid incompatible radios, speakers, or wiring
  • Installation is smoother, faster, and frustration-free
  • You get the correct accessories the first time

Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.