Garage
Shop

See all parts that fit your 2017 Cooper

Rockford Fosgate R2SD4-12 Open Box Complete (Very Good, Used)

500W Max (250W RMS) 12" Prime Stage 2 Shallow Mount Dual 4 ohm Subwoofer

Rockford Fosgate
Shop all Rockford Fosgate
highlight-star-icon

• Item Condition: Open Box
• 500W Peak
• 250W RMS
• Mica Injected Polypropylene Cone
• StampCast Basket
• Anodized Aluminum Voice Coil Former
• Frequency Response: 45-250 Hz

Learn more about the ls-r2sd412-obc6

We apologize

This item has been discontinued

Description


Rockford Fosgate brand icon

Authorized dealer

Item Condition - Open Box, Great:

This product works like new, is well-cared-for and in great condition. May show limited signs of wear or use and may be missing non-essential parts, accessories or original packaging.

Open Box (Complete): Item was previously installed and used. Item is in good condition and has been tested to be fully functional. Nonessential accessories (screws) may have been replaced with generic parts.

Key Benefits

  • 12" Dual 4 ohm Shallow Mount Prime Stage 2 Series Subwoofer
  • Power Handling:

  •  
    • Peak: 500 watts
    • RMS: 250 watts
  • Recommended power range: 100 - 250 watts RMS
  • CEA-2031 Compliant
  • Klippel Verified
  • Shallow Motor Assembly
  • 12 AWG compression terminals
  • Optimized for sealed enclosures
  • Mica injected polypropylene cone
  • StampCast basket with integrated spider venting
  • Linear spider with embedded 16 AWG tinsel leads
  • Unique low profile "inset" design, high excursion woofer
  • High density compressed half-roll sealed poly-foam surround
  • Proprietary attached tear & fatigue resistant poly-cotton spider
  • Suited for sealed enclosure applications, capable for use in vented boxes as well
  • Optimized motor magnetics with extended pole and bumped vented backplate
  • Fatigue resistant and reduced strain "stitched on" flexible lead wire design
  • Multi-point high-temp/high-strength neck joint bonding technique

  •  
  • High temp copper voice coil with aluminum former
  • All metal compression input terminal assembly
  • Semi-flexible PVC integrated trim ring
  • Heavy guage stamped steel frame
  • Mounting Depth: 3.602"
  • Cutout Diameter: 11.25"
  • Magnet Weight: 51.0 oz
  • Frequency Response: 43 - 250 Hz
  • Xmax: 10 mm
  • Sensitivity: 85 dB @ 1 watt / 1 meter
  • Recommended Ported Enclosure: 1.79ft³ @40.0Hz
  • Recommended Sealed Enclosure: 0.90ft³ @44.1Hz
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

  • Priced Individually

Check out the Rockford Fosgate R2SD4-12 Owner's Manual

Check out the Rockford Fosgate R2SD4-12 Data Sheet

Tips for Installing the R2SD4-12 Subwoofer


Subwoofer Wiring Guide


Wiring Guide to Wire 1 Rockford Fosgate R2SD4-12 Open Box Complete (Very Good, Used) Subwoofer

Mono Amp

2 Channel Amp - Bridged

Wiring Guide to Wire 2 Rockford Fosgate R2SD4-12 Open Box Complete (Very Good, Used) 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 R2SD4-12 Open Box Complete (Very Good, Used) Subwoofers

Mono Amp

4 Channel Amp

Wiring Guide to Wire 4 Rockford Fosgate R2SD4-12 Open Box Complete (Very Good, Used) Subwoofers

Mono Amp

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp

Specifications & Details


Subwoofer Specifications
Series
Prime R2 Series
Subwoofer Size
12"
Peak Power Handling
500 watts
RMS Power Handling
250 watts
Voice Coil(s)
Dual
Impedance (Per Voice Coil)
4 ohm
Voice Coil Diameter
2"
Frequency Response
43 - 250 Hz
Sensitivity
85 dB
Xmax (millimeters)
10 mm
Subwoofer Design
Round / Circle
Main Cone Color
Black
Woofer Composition
Mica Injected Polypropylene - MIPP
Woofer Surround
Poly-Foam
Magnet Structure
Single Stacked
Subwoofer Grille
No
Re-Cone Kit Available
No
Recommended Enclosure Specifications
Recommended Enclosure Type
Ported / Vented
Sealed
Optimum Sealed Box Volume
0.90 cubic feet
Optimum Ported Box Volume
1.79 cubic feet
Top-Mount Depth (Mounting Depth)
3.602"
Cutout Diameter
11.25"
Shallow Mount Installation
Yes
T/S Parameters (Electromechanical)
Free-Air Resonance (Fs)
30.3 Hz
Equivalent Compliance (Vas)
65.4 liters
Total Speaker Q Value (Qts)
0.65
Electrical Q Value (Qes)
0.72
Electrical Resistance of Voice Coil (Re)
6.80 ohm
Mechanical Q Value (Qms)
7.00
Efficiency Bandwidth Product (EBP)
42
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Item Details


Manufacturer:

Model Number:

R2SD4-12 Open Box Complete-2

Weight:

11.00lbs

Internal SKU:

ls-r2sd412-obc6

Internal Product ID:

132019

Customer Ratings & Reviews


Rockford Fosgate R2SD4-12 Open Box Complete (Very Good, Used) thumbnail image

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



Durability
0
Value
0
Features
0
Design
0
Usability
0

Customer Reviews

Sort by:

Loading...
Sorry, no reviews found


BEC105 small

Eclipse BEC105

Rear view Backup Camera

$189.99

List price $259.99

TS-W126DVC small

Pioneer Premier TS-W126DVC

12" Dual 4 ohms Subwoofer (FREE UPGRADE TO TS-W1207D4 OR TS-W307D4)

(3)

$59.99

List price $119.99

KVT-614 small

Kenwood eXcelon KVT-614

In-Dash 7" TFT Touchscreen Monitor with DVD, CD, MP3, WMA, AAC Receiver and Rear USB Port

(3)

$569.99

List price $799.99

SB-H-CIVSDN/10W6v2 small

JL Audio SB-H-CIVSDN/10W6v2

Honda Civic Sedan 2006-up, 10" Dual 4 ohms Loaded Vehicle Specific Stealthbox Subwoofer Enclosure with 1 10W6v2-D4Subwoofers

$799.95

List price $799.95

SB-P-CYNNE/10W6v2 small

JL Audio SB-P-CYNNE/10W6v2

Porsche Cayenne 2002-2006, 10" 2 ohms Loaded Vehicle Specific Stealthbox Subwoofer Enclosure with 1 10W6v2-D4 Subwoofer

$849.95

List price $899.95

DDX8017 small

Kenwood eXcelon DDX-8017

Double DIN Touchscreen In-Dash DVD Player

(4)

$1099.99

List price $1999.99

US369 small

Phase Linear US369 by Jensen/Audiovox

6" x 9" 3-way Car Audio Speakers

(3)

$20.99

List price $79.99

SB-C-PTCRSR/10W1v2 small

JL Audio SB-C-PTCRSR/10W1v2

Chrysler PT Cruiser 2000-up, 10" 4 ohms Loaded Vehicle Specific Stealthbox Subwoofer Enclosure with 1 10W1v2-4 Subwoofer

$599.95

List price $649.95

12JL small

12JL - Triple 12" Sealed Subwoofer Box Enclosure

Open Box: 12" Sealed Subwoofer Box Enclosure for 3 Subs

$37.00

List price $219.99

Related Searches


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

2017 MINI Cooper

1983 Chevrolet Impala

2007 Volvo XC70

1981 Chevrolet C10 Pickup

1983 Porsche 928

1966 Chrysler Imperial

2010 Volvo XC70

1990 Alfa Romeo 2000

2014 Chevrolet Malibu

2005 GMC Sierra 1500

Vehicle
Store
Delete

2008 Harley Davidson FXSTC Softail Custom

2000 Harley Davidson FLHT Electra Glide Standard

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.