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Rockford Fosgate R2D4-10

250W 10" Prime Stage 2 Dual 4 ohm Subwoofer

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List price $89.99

$49.95

with warranty

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Order within 17 hrs 41 mins to ship 4/21

Arrives by Wednesday, Apr. 23 to zip 20147

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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 R2D4-10 10" subwoofer has a peak power rating of 500 watts and a continuous RMS power rating of 250 watts. This makes this an ideal subwoofer for anyone looking to add some bass to their car audio system. 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 R2D4-10 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 Prime Stage 2 Series Subwoofer
  • Power Handling:
    • Peak: 500 watts
    • RMS: 250 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: 87 dB
  • 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.
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.
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".
87 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.
6.5 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.
0.50 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
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.
4-3/8"
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.
9-3/16"
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.

No

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.
34.9 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.
38.4 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.
0.53
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.
0.58
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.
7.83 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.
6.44

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
76%
4 Star
14%
3 Star
10%
2 Star
0%
1 Star
0%

Average Attribution Rating

Durability
4.5
Value
4.9
Features
4.6
Design
4.5
Usability
4.8

Kyle

San Antonio, Texas

Overall
Durability
Value
Features
Design
Usability

Good Value

October 10, 2011

This sub sounds great. After roughly 15-20 hours of break in time it really starts to shine. It's in the back of my crew cab Tundra in a passive box tuned to 34 Hz with a Dayton Audio 10" passive radiator. It's feeding off of a RF 300.1 and after breaking it in it keeps up with the amps power. I have bottomed it out before during a torture test but the voicecoil definitely handled every bit. The duel voicecoil is nice too for extra wiring options.

2 of 2 found this helpful

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K17

Allentown, PA

Overall
Durability
Value
Features
Design
Usability

great sub and price

August 26, 2011

This sub hits hard and sounds very clear, I went from 2 15s to just one of these. It has plenty of bass and gets the job done well. For the price sonic has it, its a great deal for a great sub

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Randy

Texas (unfortunately)

Overall
Durability
Value
Features
Design
Usability

GREAT

March 4, 2011

LOVE IT! This sub does a great job of balancing my factory system. I do NOT want people outside my car to hear my music. This sub is perfect. I love it! Looks cool...sounds great...what more could you want?

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Gavin

Tx

Overall
Durability
Value
Features
Design
Usability

2010 ram

March 11, 2014

I have 2 of these in a under back seat box and they sound really good with a good amp.

0 of 0 found this helpful

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Mike

Edmond, OK

Overall
Durability
Value
Features
Design
Usability

F150 Supercrew

March 9, 2014

I was looking to put some bass into the sound system I was building for the truck. As I have gotten older I was wanting a good SQ set up. I chose this sub for its value, wattage handling, & the dvc. I built the box and got it powered using a channel amp and it has delivered. I cannot comment on the durability as I have only had it a month but so far so good.

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Sal

NY

Overall
Durability
Value
Features
Design
Usability

Pleasantly surprised

February 23, 2014

I'll be honest, although I've owned Rockford products in the past, I didn't have very high expectations for this sub however, I was pleasantly surprised. The speaker produces rich, deep bass without needing too much power. I have this powered by a Kicker DX250.1 amplifier and the sub is in a vented box. The amp is not even up 1/4 of the way and it hits harder than some high end subs that I've heard and have owned. I highly recommend this for anyone that's not looking to spend much and wants great sound. Shipping was fast and free.

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Matt

Jacksonville, FL

Overall
Durability
Value
Features
Design
Usability

Great product

December 11, 2013

This sub hits hard for its size and price. I am pushing around 200 RMS at this guy from a Rockford R400-4D amp. Produces deep bass without any hiccups. Strongly recommend to anyone looking for a sub that isn't too powerful yet delivers strong bass.

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dchuda

canyon country

Overall
Durability
Value
Features
Design
Usability

Great Value

September 30, 2013

Great product for money. Handles plenty of power and hits hard. Looks good but its a sub. Would recommend this to anyone thats looking for a 400-600 watt subwoofer!

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Mark

New Orleans

Overall
Durability
Value
Features
Design
Usability

Rockford fosgate R2D4-10

September 30, 2013

Great sound and bass also great quality speaker for the price.

0 of 0 found this helpful

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Rex

Canada

Overall
Durability
Value
Features
Design
Usability

BANG FOR YOUR BUCK!!!

September 18, 2013

Rockford never ceases to amaze! I picked up 2 of these for the system in my CRX, wired in a series at 2ohms with my amp pushing 300w rms to each channel... WOW. I never expected to get such a clean, tight kick out of a tier 1 sixty or so dollar subwoofer. Whatever your genre is, this little beast will surpass your expectations when tuned correctly. The perfect solution for someone on a budget, I highly recommend it!

0 of 0 found this helpful

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Jacob

Codie d alene, ID

Overall
Durability
Value
Features
Design
Usability

Awesome

February 18, 2013

Coming from Kicker Comp 8s to these in my Toyota pickup definitely is quite a difference. Put each one in a .58 cu. ft. sealed box behind my seat, and they kick HARD. And I'm someone that doesn't really like to crank it up and pound them to their limit. I decided to port one at 43Hz since that's what Rockford recommends. It puts out way more bass but I think I need to tune it lower since they have some trouble with lower notes that my 8s would pick up. Overall, Rockford is now my go-to stereo brand instead of Kicker. The quality of sound is much better.

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Trevor

Arnold, NE

Overall
Durability
Value
Features
Design
Usability

Good for a while

January 21, 2013

These subs are great after you give them a couple hours. I had mine for 5 months then they unexpectedly sounded like s***

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Randy

Salisbury, NC

Overall
Durability
Value
Features
Design
Usability

nice loud sub

January 2, 2013

I have one of these in a custom ported box tuned at 40hz powered by a boss 1100 watt amp. Im giving it 250w rms and it sounds great at lower volumes. When I really crank it up I can hear it outside the truck and it rattles body panels, but it dont have as nice sound quality at higher volumes. Overall its a good sub and the price is great.

0 of 0 found this helpful

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Johnny

Hazleton, PA

Overall
Durability
Value
Features
Design
Usability

Very good sub

December 27, 2012

These subs hit nice with the right power also in a ported box. You can max these out too with sound. Nice and gives you the sound quality you want.

0 of 0 found this helpful

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JJ

Augusta, GA

Overall
Durability
Value
Features
Design
Usability

More Than Enough Power!!!

December 7, 2012

I purchased the Rockford Fosgate R2D4-10 because of the Positive reviews and because It was a perfect match for my Rockford Fosgate R250-1D amp. I had (1) of these subs installed in my Ford Explorer using the 8 Gauge Rockford Fosgate RFK8I kit. Also bought the Belva 10" .77cuft sealed box from Sonic. Let me tell you that I really couldnt be more pleased with my system. Sound Quality is excellent. And this combo really BOOMS and HITS HARD!! I wanted something simple and not too overpowering. I really got more than I was expecting. Sonic Electronix provided supurb FAST service. I live on the east coast and ordered Sunday night, recieved Thursday and had everything hooked up Friday morning. I couldn't be any more happy with my purchase. If your looking for a single subwoofer with great sound quality and bass, the R2D4 w/ RF R250-1D amp is MORE THAN ENOUGH POWER!!! You won't be disappointed! Thanks Sonic for the great service, and I will refer you to everyone!

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Tim

New Florence, PA

Overall
Durability
Value
Features
Design
Usability

Great sub

November 10, 2012

I was more than pleased with this product. i put two of them in a buddies truck in two sealed boxes i also got from sonic and man do they sound really crisp and clear. they also look great with the standard rockford quality. i would recommend this sub to anyone

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g.

newburgh, NY

Overall
Durability
Value
Features
Design
Usability

Big sound in a little package.

September 28, 2012

Highly recommend these amps. I have two of them in a A-trend box under my back seat in my F-150. The sound is amazing. I blew my installer away. He liked them so much, he's going to carry them in his shop.

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Steve

NOLA

Overall
Durability
Value
Features
Design
Usability

DOES WORK SON.

May 10, 2012

Yes. Get it. Just put 2 of these in my 2011 Camaro, and now my rearview mirrow is always looking at my feet. Got it in a custom-sealed box hooked up to a mono class D 2000 Watt Power Acoustik (pushes half of what it says) so it worked out perfectly. Slaps harder than I expected, and is a little strong for my stock speakers, so I can't wait to upgrade those too. GREAT BUY! Extremely impressed.

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RBB747

Hermosa Beach, CA

Overall
Durability
Value
Features
Design
Usability

Decent, but not outstanding

April 26, 2012

I bought one of these subs to replace a 10-inch Eclipse 8010 that gave up on me. The Fosgate doesn't hit even half as hard as my Eclipse, and it doesn't hit the deep lows hardly at all. It hits just enough so that I know I have a woofer back there, AND just enough to keep me satisfied until I can get a sub that really hits. If you have been riding around in your car listening to a couple of 5-inch, 3-way speakers and this is your first sub, then it will probably sound great to you. Keep in mind I was spoiled by my previous sub. It truly is a "get what you pay for" game when it comes to car audio.

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criz

Sacramento, California

Overall
Durability
Value
Features
Design
Usability

Very clean sound..

April 24, 2012

This sub hits hard, has some shake to it, and is very clean deep sounding.. Its absolutely amazing for the price.. Rockford fostgate did it again.

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Accessory Tools and Products

Accessories added

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

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

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 $79.99

Gold Plated Dual Terminal Banana Plug Connector

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

Your Price $4.99

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

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 R2D4-10 Subwoofer

Mono Amp

2 Channel Amp - Bridged

2 Rockford Fosgate R2D4-10 Subwoofers

Mono Amp

Mono Amp - Option 1

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp - Bridged

3 Rockford Fosgate R2D4-10 Subwoofers

Mono Amp

4 Channel Amp

4 Rockford Fosgate R2D4-10 Subwoofers

Mono Amp

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp

Product Summary

Manufacturer

Model Number

R2D4-10

UPC

780687332549

Weight

8.50lbs

Internal SKU

r2d410

Internal Product ID

33743

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 R2D4-10