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Rockford Fosgate Prime R1-1X12

Single 12" 4 ohm Prime Loaded Subwoofer Box/Enclosure

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List price $249.95

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Rockford Fosgate Prime R1-1X12

Single 12" 4 ohm Prime Loaded Subwoofer Box/Enclosure


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25 ft. of True 12 Gauge EnvyFlex Speaker Cable/Wire (100% Oxygen-Free Copper)


NVX Sound Dampening Trunk Kit (SDTK20)

20 Square Feet of Sound Dampening Material (Five 18" x 32" Pieces)


Car Stereo and Speaker Installation Tool Kit

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Bundles with this Product

15% Off a Sound Dampening Kit with Your Subwoofer Purchase!

Add an NVX SDTK20 Sound Dampening Trunk Kit to your Subwoofer purchase and save 15%. Simply click the "Add Both to Cart" button. This offer cannot be combined with any other coupons or offers.




Rockford Fosgate Prime R1-1X12



15% OFF



Special Price $45.89 ($53.99 if purchased separately)


• Eliminates Road Noise
• Quiets Vibrations
• Stops Rattles • Increases SPL
• Reduces Heat
• Simple To Install
• Easy To Form Aluminum
• Four Step Peel and Stick Installation
• Five 18" x 32" Pieces

Get 10% off The 12" Stamped Mesh Grille with Purchase!

For a limited time - while supplies last - get an instant 10% off the Rockford Fosgate Stamped Mesh Grille Insert. Purpose-engineered to protect against surround and cone damage. This offer cannot be combined with any other coupons or offers.




Rockford Fosgate Prime R1-1X12



10% OFF

Rockford Fosgate Prime R1G-12


Special Price $13.49 ($14.99 if purchased separately)

Rockford Fosgate Prime R1G-12

• Designed for the Rockford Fosgate R1S4-12
• Stamped mesh grille insert
• Protects against surround and cone damage
• Easy to install

Get 10% off a RF License Plate & Deadskin Combo w/ Purchase!

For a limited time -while supplies last- get 10% of the Rockford Fosgate Black Powder Coated Stainless Steel License Plate Frame w/ 1 Sheet of Deadskin Bundle. This offer cannot be combined with other coupons or offers.




Rockford Fosgate Prime R1-1X12



10% OFF

Rockford Fosgate Sound Dampening License Plate Kit - RFDS-PLATE


Special Price $26.99 ($29.99 if purchased separately)

Rockford Fosgate Sound Dampening License Plate Kit - RFDS-PLATE

• (1) 3.3" X 10" Sheets
• Provides 40% more damping than standard non-embossed aluminum mat
• Silences panel vibration, reduces road and wind noise by up to 10dB over competition
• Butyl rubberbacking
• 1.5 mm thick

(Offer 1 of 3)

Combined Total Price


You Save $8.10

Rockford Fosgate Audio Store

Subwoofer Features:

  • 12" 4 ohm Prime Series Subwoofer
  • Power Handling:
    • Peak: 400 watts
    • RMS: 200 watts
  • Recommended power range: 50 - 200 watts RMS
  • Impedance: 4 ohms
  • High quality fiber cone
  • Black raised surround
  • Up to 12 AWG compression terminals
  • 2" anodized aluminum voice coil former
  • Frequency response: 25-250 Hz
  • Sensitivity: 90dB
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

General Enclosure Features:

  • 12" sealed hatchback enclosure
  • Subwoofer mounting depth: 5"
  • Subwoofer cutout diameter : 10.94"
  • Dimensions: 7-1/4"TD x 13-1/4"BD x 17-3/4"W x 14-3/8"H

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.
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
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.
200 watts
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.
400 watts
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.
Fiber Impregnated Cone
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".
90 dB
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).
25 - 250 Hz
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.

Enclosure Specifications

Box Type
Represents the style of the enclosure. Be sure to purchase the appropriate enclosure type and internal volume that will be compatible with your subwoofer's recommendation.

Sealed - Sealed boxes are those that have no holes or vents in it. The only hole in a sealed box is where the subwoofer is installed. Smaller sealed boxes require more power than a larger sealed box. They provide a tight, accurate bass, while the larger sealed enclosures provide a "boomier" and louder bass.

Ported / Vented - Ported/Vented Enclosures provide an even boomier, louder bass, but less accurate then a small, sealed box. Ported enclosures typically require more airspace per sub and also less power output from an amplifier to perform correctly.

Bandpass - Bandpass enclosures make subwoofers perform efficiently, but loose. The bass is not as "boomy" as a ported enclosure nor as punchy as a sealed enclosure. Bandpass enclosures work well with lower to mid-level subwoofers.
Number of Subs/Speakers
This value represents the number of speakers or subwoofers that the enclosure accommodates.
Box Style/Shape
The box style or shape refers to the actual shape of the box. Square and rectangular boxes are straight-edged boxes on all sides, whereas hatchback and truck style enclosures feature an angled front or back design that allows for installation in places short on depth such as single cab pickup trucks. You can also use such enclosures in hatchback cars or other vehicles where space is a premium. Tube and cylinder shaped boxes were made popular by Bazooka and are a great option for those looking for a nice amount of bass without sacrificing lots of space. They may even fit in locations that slim truck boxes cannot fit in. If the enclosure is vehicle specific, we encourage you to read the product description to find out which vehicles the enclosure is made for.
Hatchback Style, Angled Back
The height of the item, measured from top to bottom, in inches.
The width of the item from left to right (side-to-side) measured in inches.
The front-to-rear depth of the item, in inches. If the item is angled or slanted, this value is the bottom measurement.
Second Depth
The second depth is used only when the box is slanted or angled. This value is the top measurement and it is measured in inches.
Wood Thickness
The thickness of the wood the enclosure is made of, measured in inches.
Number of Terminals
The number of terminals the enclosure has. Each terminal represents 1 positive and 1 negative.
Terminal Type
Spring clip terminals work best with bare wire connections with small-gauge speaker wire, or pin-type connectors.

Binding post terminals are a sturdier, more versatile type of speaker terminal. Because binding post terminals are are threaded, you can tighten them down against the wire or connector for a tight, clean connection. The most popular style of binding post terminals is known as a "5-way binding post". This type can accept bare wire, or any of the common speaker wire connectors. Binding posts with the option to be used with banana clips are even more versatile

Spring posts are a hybrid of the two. Instead of using a thread and "screwing" them tight, they use a spring to allow the wire to fit and tighten against the terminal.

Spring posts
Box Exterior Color
The color of the enclosure's exterior/outer finish.
Box Finish
The material used on the outside of the box. Most boxes are carpeted to prevent exterior scratches; however vinyl is popular as it can often be color-matched to a near exact look of your leather factory interior.

Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider

Summary of Customer Ratings & Reviews

Rating Distribution

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1 Star

Average Attribution Rating

Accessory Tools and Products

Accessories added

NVX Speaker Wire (XWS1225)

25 ft. of True 12 Gauge EnvyFlex Speaker Cable/Wire (100% Oxygen-Free Copper)

Your Price $39.99

NVX Sound Dampening Trunk Kit (SDTK20)

20 Square Feet of Sound Dampening Material (Five 18" x 32" Pieces)

Your Price $53.99

NVX Sound Dampening Rubber Roller (SDRLR1)

Universal, Professional Heavy Duty Roller for Sound Damping/Dampening

Your Price $7.99

Car Stereo and Speaker Installation Tool Kit

Complete Car Stereo Tool Kit, Includes Voltage Test Light, Wire Stripper and More

Your Price $18.99

Browse 1 question and 1 answer
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Hi, Sorry I get mixed up with the Rockford Fosgate Prime R1-1X12 description. Is it 2 or 4 ohms or both? Want to run it a 2ohms will it be possible?. thanks
Jonathan B on Apr 17, 2015
Best Answer: Hello Jonathan,

The description is correct, but the small text at the top is Not. The enclosure is set to a 4ohm load.
Reply · Report · Rick MStaff on Apr 18, 2015
· Add Answer · I Have This Question Too (0)

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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 R1-1X12