R1S4-12
12” Prime R1 4-Ohm SVC Subwoofer

The R1S4-12 features a 4-Ohm Single Voice Coil design, 200 Watt RMS power handling, and is optimized for both sealed and vented enclosures.

  • Fiber reinforced painted paper-pulp cone
  • Laser-etched aluminum dustcap
  • High durability compressed foam surround
  • Fatigue resistant poly-cotton spider with integral woven leads
  • Proprietary powder coated stamped steel frame with spider cavity venting
  • Bumped backplate with vented pole piece for greater thermal/mechanical power handling
  • High-temp copper voice coil with aluminum former
  • High-grade Y30 Ferrite magnet
  • Integrated spring-loaded nickel-plated push terminals
  • Integrated ABS decorative trim ring
USD 69.99
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R1S4-12

Rockford Fosgate Prime R1 12” subwoofers provide high performance bass at an unbelievable value. This model features a laser etched curvilinear dust-cap to dissipate heat generated by the high‐temp copper voice coil as well as a solid stamped steel frame with integrated frame mounted compression terminals. Best of all, they are optimized for both sealed and vented enclosures.
CEA-2031

CEA-2031

Power handling on Rockford Fosgate speakers conform to CEA-2031 industry standards.
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Klippel Verified

Klippel Verified

Klippel is a speaker certification program allowing us to deliver the best possible subwoofers.
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Anodized Aluminum Voice Coil Former

Anodized Aluminum Voice Coil Former

Rockford Fosgate subwoofers use anodized aluminum voice coil formers that provide superior heat...
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CEA-2031 Compliant: CEA-2031 Guidelines
Size: 12"
Nominal Impedance: 4-Ohm
Power Handling (Watts RMS): 200 Watts RMS
400 Watts Max
Voice Coil Diameter: 2.0" (50.8 mm)
Magnet Weight (oz): 40 oz. (1.13 Kg.)
Speaker Connector: 12 AWG compression
Fs (Hz): 30.5
Re (Ohms): 3.5
Le (mH): 2.10
Qms: 7.97
Qes: 0.58
Qts: 0.54
Vas (Liters): 90.4
Sd (cm2): 530.9
SPL (dB @ 1w/1m): 90
Xmax (mm): 7.0
Woofer Displacement (in): 0.10 cu.ft. (2.80 Liters)
Cutout Diameter (in):
Mounting Depth (in):
Shipping Weight: 9.25 Lbs. (4.19 Kg.)

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Return Authorization

Contact the Authorized Rockford Fosgate Dealer you purchased this product from. If you need further assistance, call 1-800-669-9899 for Rockford Customer Service. You must obtain an RA# (Return Authorization number) to return any product to Rockford Fosgate. You are responsible for shipment of product to Rockford.

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R1G-12

12" Prime R1 Stamped Mesh Grille Insert
MSRP $19.99

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Rockford FosgateWoofer WiringWizard



Available Wiring Diagrams


Please consult your amplifier owner's manual for lowest recommended impedance.

Wiring Diagram #1


Wiring Diagram #2


Wiring Diagram #3


Wiring Diagram #4


Wiring Diagram #5


Wiring Diagram #6


Speaker Polarity
Your woofer may use one of the following to identify (+/-) terminals.
Positive +
red post
purple (4Ώ)
red (8Ώ)
Negative -
black post
no dot
no dot

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