Expert Service 1-877-289-7664 [Hours]

Amp Up Your Summer

Rockford Fosgate R2SD2-12

250W 12" Prime Stage 2 Shallow Mount Dual 2 ohm Subwoofer

In Stock
|

Save Money with Sonic Exclusive Bundless: View All Deals!

List price $119.99

You Save: $35.04 (29.20%)

$84.95

with warranty

+ FREE Shipping in US 48

Order within 13 hrs 17 mins to ship 6/2

Arrives by Thursday, June 4 to zip 20147

Add an Extended Warranty

SquareTrade Product Warranty
Fast, Free Shipping

Within the US 48

60-Day Money-Back

Hassle Free Returns

Low Price Guarantee

Seen it for less? Click here

365-Day Coverage

Warranty assistance for a year

In Stock

Arrives by Thu, June 4

Get FAST answers from customers ASK a Question See questions answers

Bundled Savings with this Product

Save 35% on a Vented Enclosure with Your Subwoofer Purchase!

Add a Belva 1SV12B Vented Subwoofer Enclosure to your Subwoofer purchase and save $19. Simply click the "Add Both to Cart" button. This offer cannot be combined with any other coupons or offers.

19.25

36316

1224

Rockford Fosgate R2SD2-12

$84.95

+

35% OFF

Single 12" Vented MDF Subwoofer Enclosure (Belva 1SV12B)

$54.99

Special Price $35.74 ($54.99 if purchased separately)

Single 12" Vented MDF Subwoofer Enclosure (Belva 1SV12B)

• Single 12" Vented MDF Enclosure
• Holds one 12" subwoofer
• 3/4 MDF (Medium Density Fiberboard) Construction
• Durable black carpeting
• Gold Terminals
• Internal Box Volume: 1.8 cubic ft.

15% Off a Sound Dampening Kit with Your Subwoofer Purchase!

Save 15% when you add an NVX SDTK20 Sound Dampening Trunk Kit to your Subwoofer purchase. Simply click the "Add Both to Cart" button. This offer cannot be combined with any other coupons or offers.

9.00

36316

1219

Rockford Fosgate R2SD2-12

$84.95

+

15% OFF

NVX SDTK20

$59.99

Special Price $50.99 ($59.99 if purchased separately)

NVX SDTK20

• Eliminates Road Noise
• Quiets Vibrations
• Stops Rattles • Increases SPL
• Reduces Heat
• Simple To Install
• Easy To Form Aluminum
• Four Step Peel and Stick Installation
• Five 18" x 32" Pieces

(Offer 1 of 2)

Combined Total Price

$120.69

You Save $19.25

Rockford Fosgate Audio Store
Rockford Fosgate Prime Stage 2 Subwoofer

Eliminate Entry Level and Go Straight to Prime

Prime subwoofers are ready to rock and are the perfect first step into performance audio.The Prime R2 12" subwoofers have a peak power rating of 500 watts and a continuous RMS power rating of 250 watts. This makes them an ideal subwoofer for anyone looking to add some modest low end to their car audio system. The Prime R2 drivers feature an anodized aluminum voice coil formers for extreme heat dissipation that allow the driver to perform at optimum level during long hard hitting sessions. These subwoofers are the way to go when looking for a woofer that is built with quality & performance in mind and has been designed by industry's leading car audio manufacture.

These woofers, like their Punch brethren, are built using many of the same speaker technologies that Rockford has been famous for over 30 years for and you won't break the bank buying one. Simply put, the Prime seriesof woofers are held to the same standards of quality and performance as any other Rockford woofer but delivered at an affordable price.

 
Anodized Aluminum Voice Coil Former

Anodized Aluminum Voice Coil Former

By using an anodized aluminum voice coil former on their subwoofers, Rockford Fosgate is able to dissipate heat from the voice coil more efficiently. A hot voice coil can melt the adhesive bonds, which will lead to eventual subwoofer failure. The aluminum voice coil former acts as a heat-sink to dissipate thermal build-up on the voice coil cool during high SPL conditions.

 
CEA-2031 Rockford Fosgate Subwoofers

Conforms to CEA-2031

Rockford Fosgate has built this subwoofer to conform to the CEA-2031 loudspeaker power handling industry standards. This means that you can trust the subwoofer to have the capacity to safely handle the continuous (RMS) power rating. Having a CEA-2031 power handling is important when matching a subwoofer to an amplifier because the power ratings are accurate.

 
Rockford Fosgate Stitched Tinsel Leads

Stitched Tinsel Leads

To improve the reliability and performance by reducing fatigue and possible shorting, Rockford Fosgate has stitched the tinsel leads to the spider. The multipoint periodic stitching lead wires reduce the mass of the tinsel leads to spread the stress over a greater area. This improves the reliability and performance of the subwoofer.




Key Benefits


 
  • 12" Dual 4 ohm Shallow Mount Prime Stage 2 Series Subwoofer
  • Power Handling:
    • Peak: 500 watts
    • RMS: 250 watts
  • 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 R2SD2-12 Owner's Manual

Check out the Rockford Fosgate R2SD2-12 Data Sheet



Subwoofer Specifications

Subwoofer Series
Each subwoofer manufactured is part of a series. This is the name of the subwoofer's series.
Prime R2 (Rockford Fosgate)
Subwoofer Size
Refers to the diameter of the subwoofer, measured in inches.
12"
Peak Power Handling
Peak power handling refers to the amount of power a speaker can handle during a brief musical burst. The RMS power range figure is a much more reliable rating for determining the speaker's power requirements. The Peak power handling specification is typically rated per speaker unless otherwise noted.
500 watts
RMS Power Handling
The RMS power is the amount of power the speaker requires to operate safely and properly. RMS Power Handling refers to the amount of power a speaker can handle on a continuous basis. We recommend powering your speakers or subwoofer with 80%-120% of its recommended RMS rating. The RMS power handling specification is typically rated per speaker unless otherwise noted.
250 watts
Voice Coil(s)
Dual voice coil subs have more wiring flexibility than single voice coils subs; however, single voice coil subwoofers provide easier hookup options for wiring multiple subwoofers in parallel or series. You may also run a dual voice coil (DVC) sub in parallel, series, or combination. A quad voice coil has four voice coils and is equal to two dual voice coil subwoofers as far as wiring goes.
Dual
Impedance (Per Voice Coil)
The load value (in ohms) that the speakers present to the amplifier per voice coil - the amount of resistance to the current flow. This is a key specification as subs wired in parallel or low impedances can create problems with your amplifier and potentially void all warranties. We encourage you to ask our support department prior to purchase if you do not understand which impedance level will suit your application best.
2 ohms
Voice Coil Diameter
Diameter of voice coil, usually measured in inches.
2"
Frequency Response
The range of frequencies the speaker will reproduce (lowest frequency to the highest). Bigger is better, meaning the wider the range, the better. The optimal range is 20 - 20,000 Hz (which is the range of human hearing).
43 - 250 Hz
Sensitivity
An efficiency or sensitivity rating tells you how effectively a speaker converts power into sound. The higher the number, the more efficient the speaker and the louder it will play with the same input power. An efficient speaker helps you maximize your available power. Most sensitivity ratings measure the speaker's output with 1 watt of input, 1 meter from the speaker. Some speakers' sensitivity is measured with 2.83 volts of input, instead of 1 watt.
 
Efficiency (1w/1m) is not an accurate indicator of a subwoofer's output capability and should not be used as a comparison to other speakers or subwoofers to determine which one is "louder".
81 dB
Xmax (millimeters)
Typically measured in millimeters, the Xmax value is the measure of a speaker cone's maximum excursion in one direction while maintaining a linear behavior.
10 mm
Subwoofer Design
This is the design of the subwoofer or the opening of the subwoofer enclosure. Each design has it's own benefits, whether it is a square, circle, or oval.

Round/Circle: This is the typical and common subwoofer design. They have a round cone and are a circle in design.

Square: These woofers are able to achieve a greater cone area in a smaller space. Because of the greater surface area, some square subwoofers will be louder than a round subwoofer of the same size.

Round / Circle
Main Cone Color
This is the color of the speaker's or subwoofer's cone.
Black
Woofer Composition
Lightweight woofer cone materials are essential for efficient operation. Poly cones produce exceptional sound and are sturdy against various changes in temperature. Paper cones are very efficient, and when treated for moisture resistance, will perform at a high level. Poly refers to polypropylene, which is thermoplastic or fibers that are polymers of propylene. IMPP refers to injection molded polypropylene, a commonly used process and material in speakers.
Mica Injected Polypropylene (MIPP)
Magnet Structure
Defines the overall structure of the subwoofers magnet.
Single Stacked
Subwoofer Grille
Most subwoofers are able to accommodate a universal grille; however, some subs include a grille and others have a specific, optional grille available for purchase separately. If "yes", then the subwoofer includes a grille. If "optional (sold separately)" the matching grille will need to be purchased in addition to the sub.
No
Re-Cone Kit Available
Some higher end subwoofers have replaceable cone assemblies. In case of a blown woofer, a recone kit allows for a simple replacement, as opposed to purchasing an entire new subwoofer.
No

Recommended Enclosure Specifications

Recommended Enclosure Type
This is the recommended type of enclosure that the subwoofer should be installed into. Some subwoofers are specially designed for particular enclosures.

Sealed: These enclosures completely enclose the air inside the box. These boxes produce a tight bass.

Ported/Vented: These enclosures have a slot of air to escape from the box. The result is a sound that has more "boom".

Bandpass: These are a combination of both sealed and ported enclosures. They can be very efficient, but require tuning for the best response.

Ported / Vented
Sealed
Minimum Sealed Box Volume
This value indicates the minimum sealed box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
0.75 cubic feet
Optimum Sealed Box Volume
This value indicates the ideal sealed box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
Maximum Sealed Box Volume
This value indicates the maximum sealed box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
1.25 cubic feet
Minimum Ported Box Volume
This value indicates the minimum ported box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
1.79 cubic feet
Optimum Ported Box Volume
This value indicates the ideal ported box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
Maximum Ported Box Volume
This value indicates the maximum ported box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
1.79 cubic feet
Top-Mount Depth
The depth when installed on top of the mounting surface. Measured from the bottom of the speaker's magnet to the bottom of the mounting holes on the rim of the speaker.
3-5/8"
Cutout Diameter
The actual diameter of the hole you will need to cut out if you are creating a new mounting location for this speaker, or if you are mounting a subwoofer in a box.
11-1/4"
Shallow Mount Installation
This means that the subwoofer/speaker is designed to be installed in areas that do not have a lot of space. Shallow mount subwoofers are typically found under a seat or behind the seat in some trucks.

Shallow mount speakers will typically have a mounting depth of 2" or less, while shallow mount subwoofers will typically have a mounting depth of 3" or less.

Yes

Electromechanical Parameters

Free-Air Resonance (Fs)
The free-air resonance frequency of the subwoofer, measured in Hz. At this frequency the weight of the moving parts is perfectly balanced with the subwoofers suspension system.
29.7 Hz
Equivalent Compliance (Vas)
This is the amount of air that has the same stiffness as the subwoofers suspension. The greater the rating, the lower the stiffness and larger recommended enclosure. It is measured in Liters.
65.4 liters
Total Speaker Q Value (Qts)
This is the subwoofers relative damping (Q) at the resonance frequency (Fs), including all dimensionless losses. Essentially, a high Qts value (closer to 1.0) means the subwoofer is great for sealed enclosures and a low Qts value (closer to 0) means the woofer is great in vented enclosures. A Qts of around 0.45 means the woofer will work decently in either enclosure type.
0.66
Electrical Q Value (Qes)
The subwoofers relative damping (Q) at the resonance frequency (Fs), including electrical losses. Also called the mechanical damping of the subwoofer. The unitless measurement usually varies from 0.5 – 10.
0.71
Electrical Resistance of Voice Coil (Re)
Amount of DC resistance of the subwoofer when measured with an ohm meter. Typically, this will read less than the impedance rating of the subwoofer.
3.80 ohms
Mechanical Q Value (Qms)
This is the subwoofers relative damping (Q) at the resonance frequency (Fs), including mechanical losses. Also called the mechanical damping of the subwoofer. This unitless measurement usually varies from 0.5 – 10.
9.00
Efficiency Bandwidth Product (EBP)
This number represents the trade off between having an efficient woofer and one with a wide bandwidth. To calculate this number, take the Fs and divide it by the Qes. If the number is below 50, the woofer is designed for a sealed enclosure only. If it's between 50-100 it can be used in either. Lastly, if it's greater than 100 it's designed for vented enclosures.

Specials with this Item

Promotions
Promotions we have offer More Ways to Shop for items that are on clearance, last chance, special offer and sales, Made in America, and more!

Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
25%
4 Star
0%
3 Star
50%
2 Star
25%
1 Star
0%

Average Attribution Rating

Durability
3.3
Value
4.0
Features
3.3
Design
3.8
Usability
3.8
James

Freer, TX

Overall
Durability
Value
Features
Design
Usability
good truck sub

March 16, 2015

I installed 2 of these in a 99 chevy 2500 4 door they sound good for such a small sub. Depending on where and how you mout em ported/sealed depends on how they will sound in my case they added that extra low end fill i needed for great sound quailty.

3 of 4 found this helpful

Was this review helpful to you?

shetty

Pennsylvania

Overall
Durability
Value
Features
Design
Usability
great sub for pickup truck

December 2, 2013

Works great for the application wired the coils in series for the bridged output on my amp and the whole truck shakes, sounds crisp too

7 of 12 found this helpful

Was this review helpful to you?

Riley

Mound, MN

Overall
Durability
Value
Features
Design
Usability
pontoon sub

September 14, 2011

I needed something that would fit in my pontoon under a seat so it was covered. this did the job. got it powered from a old RF amp and it did the trick. nice little thump for the money

6 of 14 found this helpful

Was this review helpful to you?

Colton

Eddyville, KY

Overall
Durability
Value
Features
Design
Usability
Disappointed...

August 4, 2011

I had 2 of these hooked up to a rockford fosgate p300 running at rms power and within a few hours, both subs were out of commision. the voice coil went out on one, and the other simply quit playing mid song. I was only listening to them at about half volume of my head unit. but for the time that it did work it sounded excellent. i just expected so much more from rockford fosgate.

8 of 22 found this helpful

Was this review helpful to you?

Accessory Tools and Products

Accessories added

Single 12" Subwoofer Angled Truck or Hatchback Box Enclosure

CARB Compliant, 5/8" MDF Shallow Sub Enclosure Lined with Polyfil.

Your Price $29.99

12" Large Angled Vented Subwoofer Enclosure

CARB Compliant, 3/4" MDF Vented Angled Enclosure Lined with Premium Carpeted Finish

Your Price $90.95

Single 12" Venteded MDF Subwoofer Enclosure

12" Vented 3/4" MDF Enclosure Lined w/ Polyfil.

Your Price $44.99

25 ft. of Streetwires 12 Gauge Speaker Cable

You'll need speaker wire to hook up that new subwoofer!

Your Price $44.95

Belva 23 ft. of 12 Gauge Speaker Wire

Ultra-flexible PVC blended jacket for easy installation.

Your Price $14.99

20 Square Feet of Sound Dampening Material

NVX Sound dampening is thicker than competitors, eliminates rattles and gives you bigger bass!

Your Price $59.99

Dynamat Sound Dampening Trunk Kit

Did you know sound dampening will reduce those annoying rattles and even increase your SPL?

Your Price $94.95

Stinger Sound Dampening Trunk Kit

Stinger's Roadkill sound dampening series is sure to kill unwanted road noise and rattles! Enough sound dampening for your whole trunk!

Your Price $69.99

12 oz. Can of Adhesive Spray

Spray adhesive used for adhering carpet to subwoofer boxes without bubbles.

Your Price $6.99

40" x 15 Ft Piece of Premium Un-Backed Automotive Trim Carpet

Durable design for long life-span, available in many colors and shades.

Your Price $39.99

Gold Plated Dual Terminal Banana Plug Connector

Enables an expandable, secure connection accepting up to 8 gauge wire.

Your Price $1.99

Car Stereo and Speaker Installation Tool Kit

Includes Test Light, Crimp/Splice Tool, Multi-bit Screwdriver and more.

Your Price $16.99

Xscorpion 9-Piece Nylon Plastic Pry and Chisel Tool Set

Easily removes dash/trims, door clips, panels and pins, rubber grommets and vehicle emblems.

Your Price $14.99

Cordless Multi-Functional Heat Tool Soldering Iron Kit

Continuous working lock allows you to work without holding down trigger.

Your Price $79.99

4 Ft of 1/4" Thick Black Heat Shrink Tubing

Provides abrasion resistance and added protection for your cables.

Your Price $3.99

1mm All Purpose Solder

Solder is all purpose for use on most projects where solder is needed.

Your Price $8.99

Universal 12" Subwoofer Grille

Keep your subwoofer safe from accidental damages with this amazing grill.

Your Price $19.95

1 Rockford Fosgate R2SD2-12 Subwoofer

Mono Amp

Mono Amp - Option 1

2 Channel Amp - Bridged

2 Rockford Fosgate R2SD2-12 Subwoofers

Mono Amp

2 Channel Amp

4 Channel Amp - Bridged

3 Rockford Fosgate R2SD2-12 Subwoofers

Mono Amp

Mono Amp - Option 1

4 Channel Amp

4 Rockford Fosgate R2SD2-12 Subwoofers

2 Channel Amp

4 Channel Amp

Browse 2 questions and 3 answers
Hide answersShow all answers | Sort by
Why did you choose this?
Sonic Electronix Store
Rockford Fosgate is a great product!
Bodey M on May 22, 2015
Rockford Fosgate is the Cadillac of subwoffers.
Daniel G on Dec 1, 2014
IS it 250RMS per coil?
Ricardo I on Sep 11, 2014
Best Answer: Hi Ricardo,

No. Total. The subwoofer, TOTAL, is asking for 250w RMS. Being a Dual-2ohm, that will be @1ohm or @4ohms, depending on the method of wiring chosen.
Reply · Report · Customer SStaff on Sep 14, 2014
· Add Answer · I Have This Question Too (0)

Product Summary

Manufacturer

Model Number

R2SD2-12

UPC

780687339807

Weight

11.00lbs

Internal SKU

r2sd212

Internal Product ID

36316

Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: Rockford Fosgate R2SD2-12