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Rockford Fosgate R1S412

Prime Series 12" 4-ohm subwoofer

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Item #: 575R1S412
 

Review Summary

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Our take on the Rockford Fosgate R1S412

by Dominic Devito
Rockford Fosgate

What's a component sub and why would I want one?

A component sub is simply a speaker that's designed to reproduce bass once it's installed in a compatible enclosure. Think about the impact of a movie soundtrack in a big theater or even in your own home HDTV setup. A component sub can add the same kind of power to the music in your car. And a car sub is not all about the boom that you hear on a street corner (although that's cool too) - you can pair a component sub with your choice of enclosure to get bass just the way you like it, from tight and punchy to fat and loose. And once you experience music in your car with a well-tuned subwoofer, you'll never go back.

Get Rockford Fosgate bass in your car without a heavy investment. Prime Series subs use rigid polypropylene cones and butyl rubber surrounds to punch out powerful deep notes. Stamped solid-steel frames ensure long life, even under heavy fire, while the aluminum voice coil formers dissipate heat efficiently when you're pushing your system hard. And these subs look as mean as they sound.

The Prime R1S412 12" sub handles up to 150 watts RMS. Rockford Fosgate optimizes Prime subs for space-saving sealed enclosures, so you can expect highly accurate low end to complement your music.

See more info on this item

Highlights:

  • 12" 4-ohm subwoofer
  • polypropylene woofer cone with butyl rubber surround
  • 18-gauge stamped steel frame
  • power range: 50-150 watts RMS (300 watts peak power)
  • frequency response: 22-250 Hz
  • sensitivity: 87 dB
  • top-mount depth: 4-15/16"
  • sealed box volume: 0.7-1.8 cubic feet
  • ported box volume: n/a
  • warranty: 1 year
  • Our 60-day money-back guarantee

Priced per speaker

Hands-on research from the Crutchfield Labs (what are the Labs?)

Features and Specs
Size
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12 -inch
Impedance
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4 ohms
Cone Material
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Polypropylene
Surround Material
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Butyl rubber
Ideal Sealed Box Volume (cubic feet)
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1.02
Ideal Ported Box Volume (cubic feet)
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N/A
Port diameter (inches)
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N/A
Port length (inches)
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N/A
Free-Air
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No
Dual Voice Coil
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No
Sensitivity
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87 dB at 1 watt
Frequency Response
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22 - 250 Hz
RMS Power Range (Watts)
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50-150
Peak Power Handling (Watts)
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300
Top Mount Depth (inches)
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4 15/16
Bottom Mount Depth (inches)
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N/A
Cutout Diameter or Length (inches)
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10 15/16
Vas (liters)
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195
Fs (Hz)
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21.6
Qts
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0.49
Xmax (millimeters)
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6.3
Parts Warranty
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1 Year
Labor Warranty
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1 Year
Product Research
What's in the box?

Download owner's manual

  • 12" SVC 4-ohm subwoofer
  • Installation/Operation Manual

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 open the box, verify contents, 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.

Features
Enclosure Compatibility

Features

Overview: The Rockford Fosgate Prime R1S412 is a 12-inch, 4-ohm single voice coil subwoofer. The Rockford Fosgate Prime subwoofer features a solid stamped steel frame, quick-release compression terminals, and a Parabolic polypropylene cone. The Prime R1S412 subwoofer is optimized for sealed enclosures.

Parabolic Polypropylene Cone Design: The Parabolic Polypropylene cone design results in solid bass reproduction.

Aluminum Voice Coils: The Rockford Fosgate Prime subwoofer uses anodized aluminum voice coil formers that provide excellent heat dissipation. The woofer's aluminum voice coils keep the speaker running cool, even under demanding conditions. Unlike traditional plastic substitutions, aluminum acts like a heat-sink to quickly dissipate thermal build-up on the voice coil. This keeps subwoofers cool during high SPL conditions.

Stamped Steel Basket: The R1S412 subwoofer features a stamped steel basket for added rigidity.

Compression Terminals: The Prime R1S412 features spring post terminals which accommodate up to 12 AWG speaker wire.

CEA-2031 Compliant: Power handling on the Rockford Fosgate Prime R1S412 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 Volume: The sealed box sizes recommended by Rockford Fosgate range from 0.7 cu/ft to 1.80 cu/ft. The ideal recommended volume is 1.02 cu/ft.

 
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Rockford Fosgate R1S412 Reviews

Average Customer Review:

2 people say:

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Filter by rating:
5 out of 5

Bump for cheap

Written By Jack, Arlington Hts, IL on Saturday, November 09, 2013
Crutchfield Customer Review (What's this?)
 
Great subs for the price. Rockford Fosgate is a quality brand that was a no brainer to go with. I have 2 of these in a sealed box and they sound great! They add so much bass that I can't believe I used to listen to music without subs.
Pros:
They aren't that high powered so a cheaper wiring kit can be used
Cons:
None so far
4 out of 4 people found this helpful
Was this review helpful?    Yes | No
"Coolness Factor"
Build Quality
Ease of Use
Sound Quality
Value
 
5 out of 5

rockford prime subwoofer

Written By dave m, elkhart,in on Sunday, May 13, 2012
Crutchfield Customer Review (What's this?)
 
an excellent sub for the price.It hits very good and sounds great.I was a little skeptical at purchasing at first because of the price,but I knew rockford fosgate builds quality products.So i gave it a try and could not not be happier.Once again rockord fosgate has met and exceeded my expectations.
Pros:
price,value,quality
Cons:
none at this time
10 out of 13 people found this helpful
Was this review helpful?    Yes | No
"Coolness Factor"
Build Quality
Ease of Use
Sound Quality
Value
 

1 question already asked

Will it fit in the space of The factory sub that came with vehicle I do not want to have it in an external box? [ henry  Apr 16, 2014 ]
1 answer
  • 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. [ Krissy Staff  Apr 16, 2014 ]

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For a more in-depth review and enhanced detailed information on the Rockford Fosgate R1S412, please visit the Crutchfield website product page (/ISEO-rccbcspd/p_575R1S412/Rockford-Fosgate-R1S412.html ).