Rockford Fosgate Prime Series 12 Inch R1 4-Ohm SVC Subwoofer - R1S4-12
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Literature

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.

Overview

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.

  • 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
  • 1 Year Warranty

Technologies

CEA-2031

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

Anodized Aluminum Voice Coil Former

Rockford Fosgate subwoofers use anodized aluminum voice coil formers that provide superior heat dissipation (up to 100° at full power levels). Unlike traditional plastic substitutions, aluminum acts like a heat-sink to quickly dissipate thermal build-up on the voice coil. This keeps subwoofers cool during high SPL conditions.

Klippel Verified

Klippel is a speaker certification program allowing us to deliver the best possible subwoofers.

Specifications
SPL (dB @ 1w/1m)90
Re (Ohms)3.5
Qes0.58
Qes0.58
Le (mH)2.10
Le (mH)2.10
Subwoofer TypeStandard
Subwoofer TypeStandard
Voice Coil TypeSingle Voice Coil
Voice Coil TypeSingle Voice Coil
Sealed Box Volume (Vb)1.02 cu. ft. (28.8 Liters)
Sealed Box Volume (Vb)1.02 cu. ft. (28.8 Liters)
Vented Box Volume (Vb)1.79 cu. ft. (50.6 Liters)
Vented Box Volume (Vb)1.79 cu. ft. (50.6 Liters)
Power Handling (Watts RMS)200 Watts RMS
400 Watts Max
Power Handling (Watts RMS)200 Watts RMS
400 Watts Max
Re (Ohms)3.5
Voice Coil Diameter2.0" (50.8 mm)
SPL (dB @ 1w/1m)90
Magnet Weight (oz)40 oz. (1.13 Kg.)
Sd (cm2)530.9
Voice Coil Diameter2.0" (50.8 mm)
Cutout Diameter11.22 in. (285 mm)
Magnet Weight (oz)40 oz. (1.13 Kg.)
Xmax (mm)7.0
Sd (cm2)530.9
Woofer Displacement0.10 cu. ft. (2.80 Liters)
Cutout Diameter11.22 in. (285 mm)
Vas (Liters)90.4
Xmax (mm)7.0
Qms7.97
Woofer Displacement0.10 cu. ft. (2.80 Liters)
Qts0.54
Vas (Liters)90.4
Mounting Depth4.94 in. (125 mm)
Qms7.97
Size12"
Fs (Hz)30.5
Qts0.54
Shipping Weight9.25 Lbs. (4.19 Kg.)
Mounting Depth4.94 in. (125 mm)
Nominal Impedance4-Ohm
Size12"
Speaker Connector12 AWG compression
Fs (Hz)30.5
Shipping Weight9.25 Lbs. (4.19 Kg.)
Nominal Impedance4-Ohm
Speaker Connector12 AWG compression

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