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Rockford Fosgate PRIME R1S412

150W 12" Prime Stage 1 Single 4 ohm Subwoofer

Discontinued
|

We apologize

This item has been discontinued

Bundled Savings with this Product

=

25% Off on the Subwoofer Box!

Save 25% off a 12" sealed subwoofer enclosure with your purchase!

8.75

17890

502

Rockford Fosgate PRIME R1S412

$49.99

+

25% OFF

Single 12" Sealed MDF Subwoofer Enclosure (Belva MDFS12)

$34.99

Special Price $26.24 ($34.99 if purchased separately)

Single 12" Sealed MDF Subwoofer Enclosure (Belva MDFS12)

• 3/4" Medium Density Fiberboard Construction
• Durable Black Carpeting
• Pre-Lined with Poly-Fil
• Gold Speaker Terminals

(Offer 1 of 1)

Combined Total Price

$76.23

You Save $8.75

  • 12" Single 4 ohm PRIME Series Subwoofer
  • Power Handling:
    • Peak: 300 watts
    • RMS: 150 watts
  • Parabolic polypropylene cone woofer
  • Butyl rubber surround
  • 2" 4-Layer voice coil
  • Anodized aluminum voice coil former
  • Solid, stamped steel basket
  • 12 Gauge compression terminals
  • Optimized for sealing enclosures
  • CEA-2031 compliant
  • Frequency response: 22-250 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 R1 (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.
300 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.
150 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.
Single
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).
22 - 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.
6.3 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.
Polypropylene
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.
Butyl Rubber
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.

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.
.7 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.
1.8 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.
5"
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.
10-15/16"
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.
21.6 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.
197.2 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.
0.49
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.
0.55
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.
3.39 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.
4.76

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
65%
4 Star
25%
3 Star
10%
2 Star
0%
1 Star
0%

Average Attribution Rating

Durability
4.7
Value
4.9
Features
4.2
Design
4.5
Usability
4.8

David

knoxville, TN

Overall
Durability
Value
Features
Design
Usability

Rockford Fosgate PRIME R1S412

May 16, 2013

I paired this sub with a Lanzar HTG257 amp and for the price they ROCK!! I have them in my 99ek 4dr civ (with a GSR motor..lol) and they fill the car with great bass and didnt break the weight limit or the bank doing it!! Highly recommend for entery level set up!!

1 of 1 found this helpful

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matthew

aurora, CO

Overall
Durability
Value
Features
Design
Usability

great cheap subs

February 20, 2013

these subs are awsome for there price dont expect to win any comp with them but the hit hella good i bought 2 of them put them in a sealed box running from a 800watt amp in my 4 runner and they make my nose tickle if your gettin started in car audio these are great damn near stupid proof hook them up and play

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Buk SingHay

P-Town, OR

Overall
Durability
Value
Features
Design
Usability

Rockford fosgate r1

July 23, 2012

I have two 12's of the RF R1 hook up too a boss 1500w mono block amp and man this woofer bumps really good for a single coil sub.

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dana

Lavergne, TN

Overall
Durability
Value
Features
Design
Usability

good speakers

December 29, 2011

I have 4 of these speakers in sealed boxes in a boom box that I built for my daughters softball team along with a 10" sub running off of a 5 channel 1000 watt Crunch Amp. They are very clear and well balanced and will handle the volume even in an open air setting.

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stephen

johnstown, OH

Overall
Durability
Value
Features
Design
Usability

great product and great price

December 25, 2011

These things are awsome they really pound in both a sealed and ported box. I had them in a sealed box but just recently put them in a ported box because rockford said they sound good in a ported box when i asked them. They are definitely worth the money and would recommend them to anyone who doesn't want to spend alot of money on subs.

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Denzel

Chesapeake, VA

Overall
Durability
Value
Features
Design
Usability

Bought it, Sold It

October 2, 2011

Decent 150 rms sub, just didnt fill my car with enough of the bass i needed, im sure two would be perfect, but i uprgraded to a orion subwoofer and kicker amp pushing 500 watts rms at 2 ohms...

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CECIL

Canada

Overall
Durability
Value
Features
Design
Usability

Good Pricepoint

July 24, 2011

This sub just works. I think it has great value for performance.

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Jeremy

martinsville

Overall
Durability
Value
Features
Design
Usability

GREAT!!!!

July 1, 2011

These things wam at 300rms paired I have people that won't get in my car because their scared of a heart attack. I can be heard easily a mile away

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btrain

Laurens, SC

Overall
Durability
Value
Features
Design
Usability

Great Sub!!

May 20, 2011

I have just purchased this sub and must say it is a beast! I have it in the lowest air space box being pushed by a Lanzar 1000 watt amp and it hits! Great buy for the money and Rockford always delivers good stuff! I would really love to hear this sub in a bigger box so I might build one later on, you cant go wrong with this sub(s)!

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senor grump's

phoenix

Overall
Durability
Value
Features
Design
Usability

More Bang For Your Bucks

April 4, 2011

I was looking for some new subs for my Honda accord, I was looking into some JL audio 12's since I had them in the past, but the location I went to was no longer carrying JL products,so i figure I would get Fosgate since I also had hem in the past, well to make it short I was low on cash at the time I really wanted the P3 but instead I went with the R1 and man I just love the response of those subs when I need them to hit hard they do and when I need low frequency's they respond just as great, I have them in a sealed custom box been pushed by a mono block Hifonics of 600 watts at first I was scared to blow them with all of that power but the longer I had them the better I felt about them, now I just crank my volume with out a care and I know they will respond to my demands. I've had them for about 8 months and still as strong as the first day, they are a great buy for the buck I would definitely recommend them.

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Dan

Kent City, MI

Overall
Durability
Value
Features
Design
Usability

Good for the money

January 4, 2011

i was originally going to get a p3, or a fi ssd. I love rockford fosgate and i decided to go with their entry level sub since it was cheap :] i am free airing it as im writing this and i am very pleased because i only have it on maybe 20rms. the construction is very sturdy and the sound quality is good so far. my box should be ready within the week so ill post another review of it with the box. it can hit the lows, if your just looking for some bass instead of spending a lot of money on a bigger sub just get a couple of these

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M Jamal

Baltimore, MD

Overall
Durability
Value
Features
Design
Usability

Great Sub

November 29, 2010

I like the way this SUB hits, low and hard...I would definitely recommend it...

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Dave

Canada

Overall
Durability
Value
Features
Design
Usability

Unreal Sub!!

August 26, 2010

Amazing subwoofer for the price.. don't be skeptical about the price..worth every penny!!! works amazing with the Fosgate prime r150-2 amp..just got mine install with that set up...works like a charm!!! would recommend it to anybody looking to add some killer bass to their ride.

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OiTzE

Oakland, CA

Overall
Durability
Value
Features
Design
Usability

Nice Tight Bass Great for First Timers

July 23, 2010

I would recommend this sub woofer to the first time buyer because it doesn't take that much wattage to get this sub pounding. rockford fosgate minimum that they recommend for this sub is 45 watts rms and they still pound because i had it on the rockford fosgate prime 150-2, at 50 rms for each sub, and they shake my mirror so much i could barely see through my rear view, and they have hard and tight bass but the lows were not that impressive to me, i also gave it 150 each sub but the lows weren't that good but it still has hard hitting bass to it so its great for a first time buyer, so overall this is a good deal to get bass in your ride for a low price. buy this sub in the right enclosure and you will be pleased.

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Jose Castillo

Costa Rica

Overall
Durability
Value
Features
Design
Usability

Great sub

April 28, 2010

I just installed this sub in my NISSAN ALMERA on a ported box (i know should be in a sealed box) and it is pounding really hard and I'm just using 100 watts rms on them. Bass is very loud and tight and its definitely doing a great job. If you are an enthusiast in car audio you can go for sure with this sub it will fit your needs

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Jay Rowe

St. Louis MO

Overall
Durability
Value
Features
Design
Usability

Good Value/Great Sound

April 26, 2010

Bought two of these and a sealed box. Powered by a modest 100x2 amp, they simply pound. Hit very hard for rock, alternative, go very deep for Hip Hop. Extremely good value. I can't speak on the durability yet, haven't owned them a month.

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Freddy

Houston, TX

Overall
Durability
Value
Features
Design
Usability

Great subs for the price

December 3, 2009

i Bought this sub six months ago these woofers are amazing..! I got 2 of these brand new and put them in a ported box and these things Bump Hard! I have them hooked up to a old skool kicker amp. For the most part I would definitely recommend this sub to anyone.

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basshead

California

Overall
Durability
Value
Features
Design
Usability

Wow Not Bad

August 26, 2009

ok so i was shopping around for some subs and i was about to buy some P2's but then i was like wth lets gives these a try, so i bought a pair and threw them in a sealed box and ran them off a RF Prime 2 Channel amp underpowering them by 100watts rms so 50 a piece and im shocked how good they sound for the money, bass is pretty nice and solid, sound quality is good, i cant wait to see how they sound like when i get the Punch-300 mono block on these suckers i think they will be as loud as the P1's but for less money

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kt92

oregon

Overall
Durability
Value
Features
Design
Usability

best for the money

August 13, 2009

iv got 2 of these in the trunk of a 3rd gen camaro, running off a rockford fosgate p300-1 amp. they hit about as hard as a little higher end 10 inch sub. they've got good response time, i havent listened to anything with fast double bass though, so i couldnt tell you how they do there. but for the money, i was very impressed.

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richard

Leedey, OK

Overall
Durability
Value
Features
Design
Usability

sound great

July 31, 2009

my friend has 2 of these hooked up in his pickup to a 1200 watt max amp an they bump like no other...i would definately recommend these to anyone

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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 $34.99

Single 12" Sealed MDF Subwoofer Enclosure

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

Your Price $34.99

Single 12" Ported Enclosure Custom Black Baffle

Gold Binding post terminals and a high quality 5/8" MDF construction.

Your Price $59.99

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

12" 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 PRIME R1S412 Subwoofer

Mono Amp

2 Channel Amp - Bridged

2 Rockford Fosgate PRIME R1S412 Subwoofers

Mono Amp

2 Channel Amp

4 Channel Amp - Bridged

3 Rockford Fosgate PRIME R1S412 Subwoofers

4 Channel Amp

4 Rockford Fosgate PRIME R1S412 Subwoofers

Mono Amp

Mono Amp - Option 1

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp

Product Summary

Manufacturer

Model Number

R1S412

Weight

10.00lbs

Internal SKU

r1s412

Internal Product ID

17890

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 PRIME R1S412