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Rockford Fosgate R2SD2-12
Prime R2 Series 12" shallow subwoofer with dual 2-ohm voice coils
Item # 575R2SD212 | MFR # R2SD2-12
This item is no longer available.
Our take on the Rockford Fosgate R2SD2-12 by Crutchfield's Jo Greene
Rockford Fosgate's Prime R2 shallow-mount subs deliver satisfying bass even in smaller cars where space is tight. A special elevated motor structure lets these low-profile subs work in extremely compact enclosures, while still handling plenty of power.
The R2SD2-12 sub features a 12" mica-injected polypropylene cone that works with a high-density poly-foam surround to punch out fat, deep notes. This shallow-mount workhorse will handle up to 250 watts RMS, with a mounting depth of only 3-5/8". Rockford Fosgate stitches the tinsel leads that carry the signal to the voice coils directly into the cone, so they'll hang tough through heavy use. The stamped solid-steel frame offers the same venting found in standard-mount Rockford Fosgate subs to keep this sub running cool.
Dual 2-ohm voice coils allow you to wire this sub for 1- or 4-ohm impedance, giving you more flexibility in setting up your system. Rockford Fosgate optimizes this Prime sub for both sealed and ported enclosures so you can choose the type of bass you want in your ride.
To drive this single subwoofer, we recommend a mono amplifier rated between 200 and 375 watts RMS at 4 ohms. For more information, please refer to our article on How to Match Subwoofers and Amplifiers.
Great sub hits really hard in my crew cab f250
Clay, Ruston, LA
What's in the Box:
- One shallow-mount 12" Dual 2-ohm voice coil woofer
- Eight 1-1/8" Self-tapping screws
- 4mm Allen bit
- Installation and Operation manual (English/ French/ Spanish/ German)
- 12" shallow-mount subwoofer with dual 2-ohm voice coils
- mica-injected polypropylene woofer cone with poly-foam surround
- stamped solid-steel frame
- power range: 100-250 watts RMS (500 watts peak power)
- frequency response: 43-250 Hz
- sensitivity: 81 dB
- top-mount depth: 3-5/8"
- sealed box volume: 0.9 cubic feet
- ported box volume: 1.79 cubic feet
- warranty: 1 year
- Our 60-day money-back guarantee
Rockford Fosgate R2SD2-12 Reviews
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Features and Specs
|Impedance||1 ohm or 4 ohms|
|Cone Material||Mica injected Poly|
|Ideal Sealed Box Volume (cubic feet)||0.9|
|Ideal Ported Box Volume (cubic feet)||1.79|
|Port diameter (inches)||4|
|Port length (inches)||11.8|
|Dual Voice Coil||Yes|
85 dB at 1 watt
|Frequency Response||29 - 250 Hz|
|RMS Power Range (Watts)||100-250|
|Peak Power Handling (Watts)||500|
|Top Mount Depth (inches)||3 5/8|
|Bottom Mount Depth (inches)||N/A|
|Cutout Diameter or Length (inches)||11 1/8|
|Parts Warranty||1 Year|
|Labor Warranty||1 Year|
Shallow Mount Design: The Rockford Fosgate Prime R2 Shallow Subwoofer is designed and engineered with a much smaller motor assembly which reduces the overall depth of the woofer allowing it to fit in shallower enclosures and tighter locations of your vehicle.
Dual 2-ohm Voice Coils: This woofer features dual 2-ohm voice coils to offer wiring flexibility. When the voice coils are wired in parallel the woofer presents a 1-ohm mono load, when wired in series it presents a 4-ohm mono load.
Spring Post Assembly: The woofer features compression input terminals with attached 16-gauge stitched tinsel lead wires. The nickel plated spring posts will accept pin connectors, single banana plugs, and bare wire up to 12-gauge.
Sealed Box Volume: Rockford Fosgate recommends a sealed enclosure with an optimum internal volume of 0.9 cubic feet (from 0.75 to 1.25 cubic feet is acceptable). Sealed enclosures provide the most control over a woofer, will handle a lot of power, and provide accurate sonic reproduction, making them suitable to all types of music.
Vented Box Volume: Rockford Fosgate recommends a vented enclosure with an internal volume of 1.79 cubic feet using a 4" diameter x 11.8" long port tube; this yields a tuning frequency of 40 Hz. Ported (or vented) enclosures typically provide better overall efficiency than sealed so they are suitable for use with smaller amplifiers, giving you more bass output from less power. However, this efficiency comes at the expense of very low frequency output (below 35 Hz).
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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 verify what’s in the box, 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.
Why did you buy this?
Been a Rockford fan all my life, so why change what ain't broke [ Dale Oct 05, 2016 ]
The price and the size [ Michael Mar 11, 2016 ]
2 questions already asked
Tech support is included with your purchase from Crutchfield, feel free to contact our Tech Support team. They can walk you through the connections on the product. Our toll-free Tech Support number is printed on your invoice, and is also available under the "My Orders" tab in the "My Account" section of our website. [ Kenny Oct 11, 2016 ] Staff
Yes great bass I love it [ JOHN Jul 06, 2016 ]
it hits nice and it probably would if you have 2 of them. I only have one and it hits nice. But for bottom bass Its not too clean. [ Michael Jun 20, 2016 ]