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Rockford Fosgate PRIME R1S412

12" Single 4 ohm Prime Stage 1 Series Car Subwoofer

  • 4.6

(20 reviews)

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Price Information

$99.99

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$49.99

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Amazing Service! Fast Shipping! All around great prices. Had what I needed, for the price that beat everyone else (even locally). Have bought before & will continue to buy in the future. Thanks for supplying all of us car nuts, new toys on a daily basis!!

- Mike from Seattle, WA

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  • 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 Prime R1
Subwoofer Size 12"
Peak Power Handling 300 watts
RMS Power Handling 150 watts
Voice Coil(s) Single
Impedance (Per Voice Coil) 4 ohms
Voice Coil Diameter 2"
Frequency Response 22 - 250 Hz
Sensitivity 87 dB
Xmax (millimeters) 6.3 mm
Subwoofer Design Round / Circle
Main Cone Color Black
Woofer Composition Polypropylene
Woofer Surround Butyl Rubber
Magnet Structure Single Stacked
Subwoofer Grille No
Re-Cone Kit Available No
Recommended Enclosure Specifications
Recommended Enclosure Type Sealed
Minimum Sealed Box Volume .7 cubic feet
Maximum Sealed Box Volume 1.8 cubic feet
Top-Mount Depth 5"
Cutout Diameter 10-15/16"
Shallow Mount Installation No
Electromechanical Parameters
Free-Air Resonance (Fs) 21.6 Hz
Equivalent Compliance (Vas) 197.2 liters
Total Speaker Q Value (Qts) 0.49
Electrical Q Value (Qes) 0.55
Electrical Resistance of Voice Coil (Re) 3.39 ohms
Mechanical Q Value (Qms) 4.76
Warranty and Return Policy
Return Policy Standard Return Policy
Parts Warranty Duration 1 year
Labor Warranty Duration 1 year
Warranty Provider Sonic Electronix
Customer Review Summary for Rockford Fosgate PRIME R1S412
Average Customer Rating is 4.6 out of 5 stars:
  • 4.6
based on 20 Reviews
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Rating Distribution:
5 star:
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 65%
4 star:
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 25%
3 star:
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 10%
2 star:
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 0%
1 star:
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 0%
what's this?
Average Attributes Rating:
Durability
  • 4.7
 4.7
Value
  • 4.9
 4.9
Features
  • 4.2
 4.2
Design
  • 4.5
 4.5
Usability
  • 4.8
 4.8
what's this?
Quick Comparison:
Most helpful favorable review vs. Most helpful critical review
Most Helpful Customer Reviews:
May 16, 2013 Rockford Fosgate PRIME R1S412
Review by
David from knoxville, TN
Overall
  • 5.0
Durability
  • 5.0
Value
  • 5.0
Features
  • 4.0
Design
  • 5.0
Usability
  • 5.0
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!!
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February 20, 2013 great cheap subs
Review by
matthew from aurora, CO
Overall
  • 4.0
Durability
  • 4.0
Value
  • 5.0
Features
  • 3.0
Design
  • 5.0
Usability
  • 5.0
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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July 23, 2012 Rockford fosgate r1
Review by
Buk SingHay from P-Town, OR
Overall
  • 3.0
Durability
  • 3.0
Value
  • 3.0
Features
  • 3.0
Design
  • 3.0
Usability
  • 3.0
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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December 29, 2011 good speakers
Review by
dana from Lavergne, TN
Overall
  • 5.0
Durability
  • 5.0
Value
  • 5.0
Features
  • 5.0
Design
  • 5.0
Usability
  • 5.0
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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December 25, 2011 great product and great price
Review by
stephen from johnstown, OH
Overall
  • 5.0
Durability
  • 5.0
Value
  • 5.0
Features
  • 5.0
Design
  • 5.0
Usability
  • 5.0
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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View All 20 Reviews for Rockford Fosgate PRIME R1S412
Empty Enclosures
Every subwoofer needs an enclosure to mount in and these high quality boxes are perfect for your new woofer! After a quick installation, you'll be ready for some real bass in your car!
  Product Price Add?
Sealed Subwoofer Enclosure Sealed Subwoofer Enclosure
Single sealed 12" hatchback enclosure made from 3/4" MDF construction and covered in gray carpet. 		$39.99
Sealed Subwoofer Enclosure Sealed Subwoofer Enclosure
Single sealed 12" subwoofer enclosure made from 3/4" MDF construction and covered in black carpet. 		$39.99
Sealed Subwoofer Enclosure Sealed Subwoofer Enclosure
Dual sealed 12" enclosure made from 3/4" MDF construction and covered in gray carpet. 		$69.95
Sealed Subwoofer Enclosure Sealed Subwoofer Enclosure
Dual sealed 12" enclosure made from 3/4" MDF construction and covered in black carpet. 		$79.95
Subwoofer Grilles
Protect your subwoofer while making your enclosure look great! These subwoofer grilles are the perfect addition to your new subwoofer.
  Product Price Add?
12" Universal Subwoofer Grille 12" Universal Subwoofer Grille
Protect your subwoofer with this aluminum grille that is simple to install. 		$18.99
Speaker Wire
Choose from our recommended speaker wire to hook up your amplifier to your new subwoofer. The higher quality of speaker wire that it used for this connection, the better your subwoofer will sound.
  Product Price Add?
15 ft. of 12 AWG StreetWires Speaker Wire 15 ft. of 12 AWG StreetWires Speaker Wire
This SuperCable from StreetWires is a noise free link between your amplifier and your subwoofer. 		$24.99
20 ft. of 12 AWG Kicker Speaker Wire 20 ft. of 12 AWG Kicker Speaker Wire
Kicker uses twisted pair technology and hyper-flex cable to provide you with the cleanest sound and a simple installation. 		$39.95
Sound Dampening Material
Get the most sound out of your new subwoofer with some high quality sound dampening material. It will keep the road noise out and the music inside the car.
  Product Price Add?
Dynamat Rubber Roller Dynamat Rubber Roller
Install your Dynamat with ease! This heavy duty rubber roller is designed specifically to install your Dynamat! 		$18.99
Dynamat Xtreme Trunk Kit Dynamat Xtreme Trunk Kit
Get better sounding bass from your new subwoofer with enough Dynamat Extreme for your entire trunk. 		$93.99
Enclosure Accessories
These accessories are designed to help you build the custom enclosure that you have always wanted, or add to the box that you already bought. Either way, these products can assist you in achieving better sound, better looks, and more bass!
  Product Price Add?
20 oz. Bag of Poly-Fil 20 oz. Bag of Poly-Fil
Polyester fiber fiberfill adds better bass to your system. 		$5.99
16 oz. Can of Adhesive Spray 16 oz. Can of Adhesive Spray
Spray adhesive used for adhering carpet to subwoofer boxes without bubbles. 		$5.99
Binding Post Terminal Cup Binding Post Terminal Cup
Use this to easily install a binding post terminal to your subwoofer enclosure. 		$4.99
Banana Clip Terminals Banana Clip Terminals
These high grade banana clips allow you to plug into your banana clip ready terminal for a secure connection. 		$4.99
Installation, Tools & Accessories
Don't forget to get the tools and accessories that will help you install your new subwoofer in your vehicle. Whether you opt for the professional installation card or the do-it-yourself method, you will need the following to help you out!
  Product Price Add?
Car Stereo and Speaker / Subwoofer Installation Tool Kit Car Stereo and Speaker / Subwoofer Installation Tool Kit
Includes Test Light, Crimp/Splice Tool, Multi-bit Screwdriver and more. 		$14.99
System Optimization and Tuning
Use these items to assist in testing and tuning your new car audio system to perfection!
  Product Price Add?
Scosche SPL Meter Scosche SPL Meter
Monitor the noise level of your new car audio system with this SPL meter measuring from 60-135 dB. 		$24.99
AutoSound 2000 CD-102 AutoSound 2000 CD-102
High frequency test CD specifically designed for the set-up and evaluation of sound system imaging and placement. 		$12.99
AutoSound 2000 CD-103 AutoSound 2000 CD-103
Audiophile reference series test disc for evaluation of all audio components. 		$12.99
Main Product
  Product Price Add?
Rockford Fosgate R1S412 Rockford Fosgate PRIME R1S412 $49.99
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12" Single 4 ohm PRIME Series Subwoofer • 300W Max • 150W RMS • Kenwood KAC 2-Channel Class A/B Car Amplifier • MOSFET Power Supply • Variable Bass Boost • Complete 8 Gauge Amp Kit
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More info

For more information on wiring subwoofers, visit our Subwoofer Wiring Guide: Subwoofer Wiring Guide

Product Summary

Manufacturer: Rockford Fosgate
Model number: R1S412
UPC: 780687329297
Weight: 10.00 lbs
Internal SKU: r1s412
Internal product ID: 17890