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Car Subwoofers > 
Rockford > 
Item#: 9SIA3BC23F0796

Rockford Fosgate 12" 300W Car Subwoofer

  • Rockford Fosgate
  • Parabolic polypropylene cone
  • Single Voice Coil 4 Ohm
  • Sensitivity 87 dB

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  • Overview
  • Specifications
  • Warranty & Returns
  • Reviews

The Prime 12" woofers offer Rockford Fosgate performance at an unbelievable value. These models feature solid stamped steel frame, quick-release compression terminals, and a parabolic polypropylene cone. Best of all, they work great in sealed enclosures.

  • newegg High Performance The Rockford Fosgate R1S412 subwoofer features anodized aluminum voice coil former and parabolic polypropylene cones to provide top-notch sound quality with deep, accurate and heart-shaking bass.
  • newegg Optimized for Sealed Enclosures The Rockford Fosgate R1S412 could deliver optimal sound when housed in sealed enclosures.


Rockford Fosgate


Subwoofer Size
Cone Material
Parabolic polypropylene cone
Voice Coil
Voice Coil Construction
2.0" (4-Layer)
Stamped steel basket


Peak Power
RMS Power
87 dB
4 Ohm
Crossover Point
22 Hz
0.101 cu. ft.
Thiele/Small Parameters
Re (Ohms) 3.39; Le (mH) 2.2; Qms 4.76; Qes 0.55; Qts 0.49; Vas (Liters) 197.2; Sd (cm2) 530; Xmax (mm) 6.3
Mounting Depth
Cut-Out Dimensions


Anodized aluminum voice coil former

Optimized for sealed enclosures

Speaker Connector: 12 AWG compression
Warranty, Returns, And Additional Information
  • Warranty
  • Limited Warranty period (parts): 1 year
  • Limited Warranty period (labor): 1 year
  • Read full details

Do you own this product? Write a Review

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  • Edward M.
  • 12/12/2015 4:57:44 AM
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsGreat sub!

Pros: These are the best value subs you can find. I cant believe they were less than 40 bucks. Well worth the money

Cons: none

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  • Corey S.
  • 1/21/2011 7:43:44 AM
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsValue vs. Price

Pros: Great Value for price, I have never been disappointed with any of Rockford Fosgate products, will use them for life.

Cons: none

Other Thoughts: Does the job it is needed for, great craftmanship, great quality, great value. This is a great sub, but it is not designed for competition, though it has very good sound, 100% satisfied!

1 out of 1 people found this review helpful. Did you? Yes No

  • Dion B.
  • 11/29/2010 7:35:32 PM
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsAwesome!!

Pros: Perfect for what I want it to do! Works great.

Cons: none!

Other Thoughts: Bought the combo.

Did you find this review helpful? Yes No

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Home > 
Automotive & Industrial > 
Car Electronics > 
Car Subwoofers > 
Rockford > 
Item#: 9SIA3BC23F0796
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