Rockford Fosgate R1S4-12
12" Prime R1 Series 200 Watts RMS Single 4 ohm Subwoofer
Retail Price: $89.99
Your Price: $69.95
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Item Id: 20422

Rockford Fosgate R1S4-12

12" Prime Series 200 Watts RMS Single 4 Ohm Subwoofer

The Rockford Fosgate Prime R1S4-12 features a 4-Ohm single voice coil design, 200 Watt RMS power handling. 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, it is optimized for both sealed and vented enclosures.


12" Prime R1 series subwoofer
Frequency response: 23 - 250 Hz
Sensitivity: 90dB


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
40 oz magnet
2” voice coil
Single 4 ohm impedance voice coil

Power Handling:

Up to 400 watts max
Up to 200 watts RMS


Subwoofer size: 12"
Cut out diameter: 11.22"
Top mount depth: 4.94"
Bottom mount depth: N/A

Box Size:

Ideal sealed box volume: 1.02 ft³
Ideal ported box volume: 1.79 ft³


1 year warranty
Subwoofer Size 12"
RMS Power Handling 200 watts
Impedance (Per Voice Coil) 4 ohms
Recommended Enclosure Type Ported / Vented
Recommended Enclosure Type Sealed