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Rockford Fosgate R2D4-10

Prime R2 Series 10" subwoofer with dual 4-ohm voice coils

23 Reviews | 5 questions - 6 answers

Item # 575R2D410

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Our take on the Rockford Fosgate R2D4-10

Rockford Fosgate's Prime R2 subs deliver strong bass in your car, and they are definitely built to last. The R2D4-10 sub features a 10" mica-injected polypropylene cone that works with a high-density poly-foam surround to punch out fat, deep notes. Rockford Fosgate stitches the tinsel leads that carry the signal to the voice coils directly into the cone — they'll hang tough through heavy use so you get consistent, reliable performance. The stamped solid-steel frame offers venting usually found in high-end subs that keeps this sub running cool.

Rockford Fosgate's Prime R2 subs deliver strong bass in your car, and they are definitely built to last. The R2D4-10 sub features a 10" mica-injected polypropylene cone that works with a high-density poly-foam surround to punch out fat, deep notes. Rockford Fosgate stitches the tinsel leads that carry the signal to the voice coils directly into the cone — they'll hang tough through heavy use so you get consistent, reliable performance. The stamped solid-steel frame offers venting usually found in high-end subs that keeps this sub running cool.

Dual 4-ohm voice coils allow you to wire this sub for 2- or 8-ohm impedance, giving you more flexibility in setting up your system. Rockford Fosgate optimizes this Prime sub for both sealed and ported enclosures so you can choose the type of bass you want in your ride.

Need an amp for this sub? Check out this Crutchfield-approved bass package.

To drive this single subwoofer, we recommend a mono amplifier rated between 200 and 375 watts RMS at 2 ohms. For more information, please refer to our article on How to Match Subwoofers and Amplifiers.

Product Highlights:

  • 10" subwoofer with dual 4-ohm voice coils
  • mica-injected polypropylene woofer cone with poly-foam surround
  • stamped solid-steel frame
  • power range: 50-250 watts RMS (500 watts peak power)
  • frequency response: 45-250
  • sensitivity: 87 dB
  • top-mount depth: 4-3/8"
  • sealed box volume: 0.59 cubic feet
  • ported box volume: 1.4 cubic feet
  • warranty: 1 year
  • Our 60-day money-back guarantee

Great power! Now my 93 4Runner has some much needed bass when I listen to music.

Robert, San Antonio, TX

What's in the Box:

  • One 10" Dual 4-ohm voice coil subwoofer
  • Eight 1-1/8" Allen head screws
  • 4mm Allen head bit
  • Installation/Operation manual (English/ French/ Spanish/ German)

Rockford Fosgate R2D4-10 Reviews

Average Customer Review(s):

(23 Reviews)


Robert from San Antonio, TX on 8/19/2017

Crutchfield Customer Review (What's this?)

Great power! Now my 93 4Runner has some much needed bass when I listen to music.

Pros: Great bass

Cons: None

Great technical support; quick

Jay from Orange, TX on 6/19/2017

This review is different than normal. I'm not going to rate the audio. So many already have. I found the diagram for the dual voice coils a little confusing, so I called the Rockford Fosgate customer service number, reached a tech and had my question answered immediately all within a couple minutes. I actually answered my own question, but I was impressed with how easy it was to reach their customer service and the speed that all my concerns were answered. Oddly enough, if you buy only one of these, this dual 4 ohm voice coil can either be wired as a 2 ohm or 8 ohm speaker if you are running a single channel amp. If you have a dual channel amp, you can wire as 4 ohm, or if you pair it with a second sub you can get more configuration options.

Pros: Rockford Fosgate technical support Bass

Cons: none

Rockford Fosgate R2D4-10

Anonymous from Azle, TX on 6/10/2017

2001 Acura MDX
Crutchfield Customer Review (What's this?)

Great speaker picks up the lows just the way I want and a breeze to install, used to replace factory sub in my Acura fit like a dream



Rockford Fosgate R2D4-10

Garrett from Huron, SD on 5/26/2017

I have 2 of these under the back seat of my 4 door Chevy in a sealed box. Great sound and bass for a small enclosure. Priced reasonable. I have used them hard for about a year now, no complaints. I am pushing them with a Rockford prime 500 watt mono amp, what an awesome combination.

Pros: Great bass, low price.

Cons: None.

good bass for the buck

stefan from Palmetto, FL on 5/1/2017

2000 Ford F-250 Super Duty
Crutchfield Customer Review (What's this?)

Nice sounding speaker. I would say that for the price I may not be able to compete with my son's 5000 watt system but it is more than enough sound enhancement for me.

Pros: inexpensive, seems to be good quality

Cons: I wish I could find more made in America products.

Rockford Fosgate R2D4-10

Anonymous from Guymon, OK on 4/24/2017

Crutchfield Customer Review (What's this?)

I have used Rockford Fosgate speakers since the late 80's. This pair of 10" woofers replaced a pair I had in boom box since the 80's. They are great speakers. Great sound and $ per $ you can't beat them.



Rockford Fosgate R2D4-10

Anonymous from Port Huron MI on 4/7/2017

2003 Ford Escape
Crutchfield Customer Review (What's this?)

I think this sub hits hard when you need and sounds great !!



Rockford Fosgate R2D4-10

Anonymous from Brazil, IN on 3/21/2017

Crutchfield Customer Review (What's this?)

Great Subwoofer love it



Rockford Fosgate R2D4-10

Austin from Kittanning, PA on 2/20/2017

Crutchfield Customer Review (What's this?)

Hits and sounds great

Pros: Good sound

Cons: None

Rockford Fosgate R2D4-10

Anonymous from Grand Island, NE on 9/17/2016

2000 Chevrolet Camaro
Crutchfield Customer Review (What's this?)

Very happy with my purchase. Great bang for my buck.



Quality Sub

Jacob from Washington on 5/31/2016

Crutchfield Customer Review (What's this?)

Sub delivers smooth hits and quality sound. Easy to install and looks great!

Pros: Sound quality and design

Cons: None

Buy them now!!!

Jerry G from Lynchburg, VA on 5/20/2016

2006 Honda Ridgeline
Crutchfield Customer Review (What's this?)

These subs really sound good. I have two in a box made to fit under the rear seat with only .65 cu ft of air space a piece. They are bridged on a kenwood 600w 2 channel so about 150w rms per sub. With all that said stop reading reviews and make the purchase. I will eventually pair them with the rockford 500w mono but definitely not in a hurry and every day im wondering if that is even necessary as im grinning ear to ear writing this review listening to them.

Pros: Price, ease of hookup, very nice massage!

Cons: Should have purchased sooner before reading every review possible.

a lot of bang for your buck...

Jason R. from Atchison,KS on 5/3/2016

2010 Chevrolet Silverado
Crutchfield Customer Review (What's this?)

Very nice subs for the price and they sound great too



Disappointment from Rockford Fosgate

Anonymous from huntington, WV on 1/24/2016

Crutchfield Customer Review (What's this?)

The look and style of this sub is pleasing. Easy to use. This sub stays cool and does not get hot. Resulting in longer life span. Downside the makers of this sub should have taken more time to make sure that everything is properly glued together. A separate gasket would help to make sure this sub is sealed flush with the box. To reduce unwanted air leaks. Something I noticed with this sub is that it doesn't hit the ultra low notes very well. A sub sonic filter is definitely needed. Tuned to 50hz. A ported high SPL box tuned at 50hz will get this sub to play loud and clear. This sub comes with screws and it own screw bit. Good for putting this sub in a new box. I found this sub works best with various rock music and not so much with hip-hop. As hip-hop requires a minimum of 30hz for a better sound experience. Hope this helps the next time your looking for a new 10in subwoofer.

Pros: Saved money here at this site

Cons: Not very durable

The most Boom for your Buck

Anonymous from Georgia on 10/25/2015

Crutchfield Customer Review (What's this?)

Rockford Fosgate are known for their quality and sound and this sub will not disappoint. Has plenty of bass and its construction is flawles . I recommend this sub to anyone. You can't go wrong with it.

Pros: Too many to list

Cons: Make the wiring diagram a little easier to understand. (The one that comes in the box with the sub)

Rockford Fosgate R2D4 10's

Mark H from Pennsylvania on 10/23/2015

Crutchfield Customer Review (What's this?)

A great sub at a more than reasonable price. I have bought more expensive subs in the past and they were not made nearly as well as these one's. Great "punchy" sound... Affordable and great looks. I bought 2 of them and put them in an old set of Rockford Fosgate truck boxes i had and im not disapointed at all

Pros: Very reasonably priced. Well built. Sound great and look great!

Cons: None that i could find

Rockford Fosgate R2D4-10

Anonymous from Cimarron Kansas. on 4/28/2015

Crutchfield Customer Review (What's this?)

For the price these are excellent speakers.



Great little sub

Anonymous from Elkview wv on 9/19/2014

Crutchfield Customer Review (What's this?)

Sounds Very well with a punch 300.1 behind it. Mostly listen to rock now. Does really well



Rockford Fosgate R2D4-10

Anonymous from Windsor, On on 4/4/2014

Crutchfield Customer Review (What's this?)

Good bang for your buck



Rockford Fosgate R@D$-10

Stacy from Anna, IL on 3/5/2014

Crutchfield Customer Review (What's this?)

Whats to say? You can't go wrong with Fosgate subs, wheither you buy inexpensive ones or the high dollar ones you can't beat them. 2 10"s in a 4 door jeep are plenty loud!!!

Pros: Works perfectly with my old Fosgate punch 100 Amp!

Cons: Thow in free grill covers, not everyone installs in a trunk of a car!

rockford fosgate r2d4-10

fob from zuni new mexico on 7/30/2013

Crutchfield Customer Review (What's this?)

ths subwoofer rocks

Pros: like the contruction

Cons: none


KR from Brigham City,UT on 6/19/2013

Crutchfield Customer Review (What's this?)

I have been impressed with its sound and versatile independence

Pros: sounds great even at low volume

Cons: haven't found any yet

rockford sub

rick from mason, ohio on 2/2/2012

Crutchfield Customer Review (What's this?)

great little sub for the price .....

Pros: great bass, good looks

Cons: speaker grill does not fit,


Hands-on research

Product Research

Enclosure Compatibility


Overview: The Rockford Fosgate Prime R2D4-10 is a 10-inch subwoofer with dual 4Ω voice coils. The sub features a StampCast steel frame, quick-release compression terminals, and a mica injected polypropylene cone. An anodized aluminum voice coil former and spider venting help keep the subwoofer cool.

Steel Basket: The R2D4-10 subwoofer features a StampCast steel basket for added rigidity.

Compression Terminals: The Prime R2D4-10 features spring post terminals which accommodate speaker wire up to 12 gauge.

CEA-2031 Compliant: Power handling on the Rockford Fosgate Prime R2D4-10 subwoofer conforms to CEA-2031 industry standards. This means the subwoofer has the capacity to handle power under continuous demand, not instantaneous power handling, that over time, can damage voice coils.

Enclosure Compatibility

Sealed Box: Rockford recommends a sealed enclosure with an optimum internal volume of 0.59 cubic feet (from 0.5 to 0.75 cubic feet is acceptable). Sealed enclosures provide the most control over a woofer, will handle a lot of power, and provide accurate sonic reproduction, making them suitable to all types of music.

Ported Box: Rockford recommends a ported enclosure with an internal volume of 1.4 cubic feet using one 4" diameter x 13" long port; this yields a tuning frequency of 43 Hz. Ported (or vented) enclosures typically provide better overall efficiency than sealed so they are suitable for use with smaller amplifiers, giving you more bass output from less power. However, this efficiency comes at the expense of very low frequency output (below 40Hz).

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Q & A

Customer Q&A

Crutchfield asked  
Why did you buy this?

Positive reviews, need an inexpensive sub for my work truck[ wayne  Jul 27, 2017 ]
The brand was recommended to me by a friend[ Robert  Jul 25, 2017 ]
I've had years of experience with both Rockford Fosgate and Kicker with excellent results[ alfred  Jul 22, 2017 ]
Great choice for the s10 truck[ ROBERT  May 13, 2017 ]
Item needed for my box[ Braian  Mar 13, 2017 ]
I did some research and this seems to be what i'm looking for !![ mike  Mar 11, 2017 ]
The price[ John  Mar 06, 2017 ]
levi suggested[ david  Dec 11, 2016 ]
Price to quality ratio[ Thomas  Oct 14, 2016 ]
One of my subwoofers had a hole in it and my aunt recommended this brand. it was cheap and of great quality so I went ahead and purchased it! Can't wait until it arrives :) [ helena  Aug 21, 2016 ]
Recommended by one of your techs.[ Juan  Aug 08, 2016 ]
I already have a P3001 Rockford mono amp installed that is 150x1@4-ohms or 300x1@2-ohms and I have an old Polk SVC sub currently (for 3 years!) that is only using 150 watts from the sub at 4-ohms, so I needed a budget DVC sub that can kick so I can wire it to present 2-ohms to the amp and get the full 300 watts from it. Yay RF and Crutchfield![ Justin  Jun 05, 2016 ]
I know people that has them an they sound good. So I will try them out.[ Sean  Jan 07, 2016 ]

5 questions already asked

Thanks for your question. For information on selecting the best subs for your amp I would recommend reaching out to an Advisor by phone (1-800-324-9695) or online chat. They will be able to help determine the differences between the sub models and help you make the best choice for your system.[ Kenny  Apr 17, 2017 ]  Staff
Thanks for your question. Mounting depth is listed as 4-3/8". Hope this helps.[ Kenny  Mar 13, 2017 ]  Staff
For details on fit or installation please contact an Advisor by phone (1-800-324-9695) or online chat. They will be able to pull up your vehicle and give you the details on if this will fit and what you will need for an installation in your vehicle.[ Kenny  Dec 15, 2015 ]  Staff
Hi. I have a stereo amp, but I run it in "bridged" mode. If my memory serves me right, it's a 2 ohm amp, and I ran the 2 speaker coils wired in parallel. So, it's bridged to mono. I previously tried the "stereo" route with it, but it didn't sound better, and I think not as loud.[ Russell  Dec 05, 2015 ]
try this link. [ PATRICK  Jul 06, 2014 ]
Each speaker has two four ohm coils in it, so you need to wire each speaker in series (positive to negative) then the two speakers in parallel from the amp (positive to positive : negative to negative) The math works out to a 4 ohm load.[ TIMOTHY  Jul 03, 2014 ]