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Rockford Fosgate R2SD4-10

200W 10" Prime Stage 2 Shallow Mount Dual 4 ohm Subwoofer

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List price $89.99

$59.95

with warranty

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Eliminate Entry Level and Go Straight to Prime

Sonic Electronix is now carrying the brand new line of Rockford Fosgate Prime Series Car Audio Subwoofers. The R2SD4-10 10" subwoofer has a peak power rating of 400 watts and a continuous RMS power rating of 200 watts giving you a comfortable amount of bass when installing one or some real deep bass when installing more than one. This shallow mount subwoofer is ideal for those with limited space but that still want a system that kicks. Equipped with anodized aluminum voice coil formers for extreme heat dissipation, will allow this sub to perform at optimum level during long hard hitting sessions. Perfect for sealed or ported enclosures the R2SD4-10 is the way to go when looking for Prime performance with an affordable price tag.

 
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.

 

General Features

  • 10" Dual 4 ohm Shallow Mount Prime Stage 2 Series Subwoofer
  • Power Handling:
    • Peak: 400 watts
    • RMS: 200 watts
  • Impedance: 4 ohm
  • Mica injected polypropylene cone
  • Black raised surround
  • Linear spider with 16 AWG woven tinsel leads
  • StampCast basket with integrated spider venting
  • CEA-2031 Compliant accurate power handling rating
  • Designed for use with sealed and vented enclosures
  • High temperature voice coil
  • Integrated PVC trim ring
  • Anodized aluminum voice coil former
  • Frequency response: 45-250 Hz
  • Sensitivity: 82 dB
  • Mounting depth: 3-7/16"
  • Cutout diameter: 9-1/8"
  • 1-year SonicElectronix.com warranty

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.
10"
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.
400 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.
200 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.
4 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).
45 - 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".
82 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.
8 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)
Woofer Surround
A speakers surround is part of the suspension system. The surround protects the cone and prevents it from being displaced as it flexes out from the basket. It is usually made of a durable material like treated foam or rubber in order to withstand the strenuous job of producing bass frequencies.
Foam
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.
0.50 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.
0.75 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.
1.40 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.
1.40 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.
3-7/16"
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.
9-1/8"
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.
39.3 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.
21.7 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.
0.73
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.
0.81
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.
6.60 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.
7.00
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

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Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Sonic Electronix

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
91%
4 Star
9%
3 Star
0%
2 Star
0%
1 Star
0%

Average Attribution Rating

Durability
4.8
Value
4.9
Features
4.7
Design
4.8
Usability
4.8

anthony

alpharetta, GA

Overall
Durability
Value
Features
Design
Usability

rockford fosgate r2sd4-10

July 23, 2014

this is a good sub for not a lot of money and fits great in a truck cab

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mike

Huber heights, OH

Overall
Durability
Value
Features
Design
Usability

Better than I expected

June 16, 2014

If you're looking for a shallow mount sub, look no further, this thing truely slams, took at least 600 watts with no issues at all, ran it that way for a while, I'd say this is an underrated subs, I've honestly been shocked by how happy I am with it.

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Liew

Malaysia

Overall
Durability
Value
Features
Design
Usability

Limited space ?, these are the right choice

February 23, 2014

for those have only a limited space, this are the brilliant choice without scarify the quality/power of the bass generated !

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Ashley

elkhart tx

Overall
Durability
Value
Features
Design
Usability

Good deal

January 6, 2014

I bought this as a gift for my brother. He loves it. Works perfectly for what he needed.

0 of 0 found this helpful

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amy

joppa, AL

Overall
Durability
Value
Features
Design
Usability

Great Product

January 3, 2014

I bought this for my son and they sound great!

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Jack

Canada

Overall
Durability
Value
Features
Design
Usability

Good service

January 3, 2014

Good service and priceing shipping was great and fast sub didn't end up working in my car don't think my car has the power to use it

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tchavoya

Ventura Ca

Overall
Durability
Value
Features
Design
Usability

Great deal

December 30, 2013

Have always bought from your web site. Very easy to use, with great pricing.

0 of 0 found this helpful

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Ba

Wetumpka. Alabama

Overall
Durability
Value
Features
Design
Usability

Great experience

December 22, 2013

Effortless ordering and install process!! A great overall experience and would recommend to anybody! Sounds great!

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Sq4me2

Oceanside ca

Overall
Durability
Value
Features
Design
Usability

Great buy

December 15, 2013

This is a great bye for a shallow powerful subwoofer

0 of 0 found this helpful

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BuckNasty

Canada

Overall
Durability
Value
Features
Design
Usability

Great, perfect fit.

November 27, 2013

Read online about putting these in the rear deck of my M5 replacing the stock sub box. Using the stock amplifier . Amazed at the result and the price cannot be beat. If you are considering a bass upgrade to your E39 keeping the DSP I highly recommend these subs for that.

0 of 0 found this helpful

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Rex

Marietta, GA

Overall
Durability
Value
Features
Design
Usability

Best shallow mounts for the money

November 16, 2013

Bought two subs to mount in the back of a standard cab Chevrolet. These were the biggest subs I could mount in the limited space. They sound FANTASTIC! They hit much harder than I had anticipated. I would definitely recommend these to anyone with limited space.

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Specialk4430

Mentor OH.

Overall
Durability
Value
Features
Design
Usability

No space? Get this sub

October 5, 2013

Bought the DVC 10" sub, built a box that fit under the rear seat of my avalanche. Due to having limited space, the box just barely met Rockford's minimum cu.ft. recommendation. I was pleasantly surprised. Hits much harder, smoother, and cleaner than a factory Bose system. Just what I wanted. It won't go as low as a bigger sub, but I am not disappointed at all.

0 of 0 found this helpful

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Christopher

Boise, ID

Overall
Durability
Value
Features
Design
Usability

Excellent Sound, Incredible Bass!!

September 17, 2013

Installed two in the rear of my E39 BMW powered by factory DSP Amp. Kicked my sound into High gear! I LOVE them!

0 of 0 found this helpful

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Clay

Madison, MS

Overall
Durability
Value
Features
Design
Usability

Shallow Mount Subs, WOW Impressed

September 6, 2013

I was told by so many who think they know it all that these would sound like crap or don't get them or since you have a 4 door truck they will sound horrible, well guess what they are MISINFORMED, these sound awesome to me! I am a 46 year old who likes good country music and these speakers give just the sound I wanted! Sonic gave me the right price!

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Bradall

Moore,Ok

Overall
Durability
Value
Features
Design
Usability

Great buy!

July 1, 2013

Good sound for the money. I didn't want a stereo to rattle windows and that's what I got. It hits hard on lows for a shallow mount ten running a 500 watt alpine amp it pushes them to hard but they're not made to handle as much power as it produces once tuned right I believe anyone would be happy with this product. I'd buy again!

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Jake

Oregon

Overall
Durability
Value
Features
Design
Usability

Love It

June 4, 2013

I was looking for a small amount of bass without taking up much room. I installed one of these in a custom sealed box with polyfil in the back of my Toyota Supra. The bass is very clean which I expected, but I did not expect it to get as loud or as low as it does! Really gets down for a shallow 10. Nice product.

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Tony

Phoenix, AZ

Overall
Durability
Value
Features
Design
Usability

Rockford Fosgate R2SD4-10

June 3, 2013

Installed two of these 10" speakers in my F150 supercrew, in a box under the rear seat. Way more bass than I need, but way excited to listen to it thump!

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Pedro

bakersfield, CA

Overall
Durability
Value
Features
Design
Usability

Great Value!

March 6, 2013

Nice deep bass, installed in a single box behind the seat and i poly filled the box. Bass was nice and clean.

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Jthree

Canada

Overall
Durability
Value
Features
Design
Usability

Awesome low profile sub

February 13, 2013

Bought this because it was one of the few subs that would fit under the rear seat of my 2012 Ford F150. Having used it for 6 months now I can say I would gladly buy it again. It doesn't shake the paint off the doors but that was not what I was looking for. I replaced all the speakers and used an Alpine amp for the mains and a Kicker for the sub. It took the sound from horrendous to really very good for very little cost.

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matt

bakersfield, CA

Overall
Durability
Value
Features
Design
Usability

Awesome!

January 25, 2012

I bought two of these for my 2006 Extended Cab Silverado and hooked them up to a 1200 watt 400 RMS amp. I have to say that these things are amazing for the price you pay! I was limited on space so I had to go with shallow mounts and I am very impressed with the performance of them. I would recommend these to anyone who has a limited budget and still wants nice, clean bass. Make sure you get the right amp for them though!

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Accessory Tools and Products

Accessories added

Single 10" Subwoofer Angled Truck or Hatchback Box Enclosure

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

Your Price $34.99

Single 10" Sealed MDF Subwoofer Enclosure

10-inch Sealed Car Sub Box Made with 3/4" MDF and lined w/ Polyfil.

Your Price $34.99

Single 10" Ported Enclosure Custom Black Baffle

Durable 3/4" Medium Density Fiberboard (MDF) construction.

Your Price $54.99

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 $109.95

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

Spring Post Terminal Cup

Makes adding a spring post terminal to an enclosure simple! Banana clip ready!

Your Price $3.99

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 $3.99

Car Stereo and Speaker Installation Tool Kit

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

Your Price $12.99

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

2" Universal, Professional Heavy Duty Roller for Sound Damping/Dampening

Universal rubber roller to make it easy to install sound dampening.

Your Price $7.99

1mm All Purpose Solder

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

Your Price $8.99

Universal 10" Subwoofer Grille

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

Your Price $13.99

10" Protective Waffle Subwoofer Grille

Keep your subwoofer looking amazing while keeping it safe.

Your Price $4.99

Scosche SPL Meter

Monitor the noise level of your new car audio system with this SPL meter measuring from 60-135 dB.

Your Price $21.99

AutoSound 2000 CD-101

Low frequency test CD

Your Price $11.99

Impedance Meter / Signal Generator

Easy to locate tuning frequencies of passive radiators and ported enclosures

Your Price $299.99

1 Rockford Fosgate R2SD4-10 Subwoofer

Mono Amp

2 Channel Amp - Bridged

2 Rockford Fosgate R2SD4-10 Subwoofers

Mono Amp

Mono Amp - Option 1

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp - Bridged

3 Rockford Fosgate R2SD4-10 Subwoofers

Mono Amp

4 Channel Amp

4 Rockford Fosgate R2SD4-10 Subwoofers

Mono Amp

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp

Product Summary

Manufacturer

Model Number

R2SD4-10

UPC

780687339814

Weight

9.50lbs

Internal SKU

r2sd410

Internal Product ID

36298

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 R2SD4-10