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R2SD4-12Prime 12" R2S 4-Ohm DVC Shallow Subwoofer
Variants
The Rockford Fosgate Prime R2SD4-12 is a 12" shallow subwoofer designed for installations with limited mounting depth. It delivers 250 Watts RMS and uses a 4‑Ohm dual voice coil for versatile wiring options.
Highlights
- 1 Year Warranty
- StampCast basket with integrated spider venting
- Mica reinforced polypropylene cone
- Integrated PVC trim ring
Key specs
Full specs- Nominal Impedance
- Dual 4-Ohm
- Shipping Weight
- 12.013 Lbs. (5.44 kg.)
- Speaker Connector
- Dual 12 AWG compression
- Voice Coil Diameter
- 2" (50 mm)
- Power Handling (Watts RMS)
- 250 Watts RMS 500 Watts Max
- Size
- 12"
- Mounting Depth
- 3.602 in. (91 mm)
- SPL (dB @ 1w/1m)
- 85
Key specs
Full specs- Nominal Impedance
- Dual 4-Ohm
- Shipping Weight
- 12.013 Lbs. (5.44 kg.)
- Speaker Connector
- Dual 12 AWG compression
- Voice Coil Diameter
- 2" (50 mm)
Highlights
Overview- 1 Year Warranty
- StampCast basket with integrated spider venting
- Mica reinforced polypropylene cone
Overview
The Rockford Fosgate Prime R2SD4-12 is a 12" shallow subwoofer designed for installations with limited mounting depth. It delivers 250 Watts RMS and uses a 4‑Ohm dual voice coil for versatile wiring options.
Best for
- Installations with limited mounting depth
- Systems that use sealed enclosures
- Setups needing flexible wiring options via a dual voice coil
Key points
- 12" shallow driver that reduces required mounting depth via an elevated motor structure
- 250 Watts RMS power handling
- 4‑Ohm dual voice coil (DVC) for multiple wiring configurations
- Mica-injected polypropylene cone for controlled low-frequency response
- Stamp-cast basket with spider venting to help keep the motor cool
- Optimized for sealed enclosure performance
Fit and use
Fits tight spaces where a standard-depth subwoofer won't. Use sealed enclosures for which the driver is optimized. The dual voice coil allows series/parallel wiring choices to match amplifier impedance and system needs.
What to know
Rated for 250 Watts RMS — match amplifier power and impedance to the subwoofer's ratings. Dual voice coil wiring changes overall impedance; verify compatibility with the amplifier before wiring. Shallow profile eases installation in constrained locations but does not change the need for an appropriate enclosure volume…
Highlights
Key features
- 1 Year Warranty
- StampCast basket with integrated spider venting
- Mica reinforced polypropylene cone
- Integrated PVC trim ring
- Shallow Motor Assembly
- Optimized for sealed enclosures
- Linear spider with embedded 16 AWG tinsel leads
- Anodized aluminum voice coil former
- 12 AWG compression terminals
- Stitched Tinsel Leads
- Klippel Verified
- Anodized Aluminum Voice Coil Former
Technologies
Stitched Tinsel Leads
Multipoint "periodic" stitched lead wire technique reduces the mass of each tinsel lead and spreads stress and
Klippel Verified
To adorn the ‘Verified with Klippel’ mark, the qualifying company’s loudspeaker engineering personnel must be
Anodized Aluminum Voice Coil Former
Two things generally happen when voice coils heat-up. They can generate heat close to the melt-down temp of their
CEA-2031
Power handling on Rockford Fosgate speakers conform to CEA-2031 industry standards. This means your speaker has
Specs
Specifications
24
| Nominal Impedance | Dual 4-Ohm |
| Shipping Weight | 12.013 Lbs. (5.44 kg.) |
| Speaker Connector | Dual 12 AWG compression |
| Voice Coil Diameter | 2" (50 mm) |
| Power Handling (Watts RMS) | 250 Watts RMS 500 Watts Max |
| Size | 12" |
| Mounting Depth | 3.602 in. (91 mm) |
| SPL (dB @ 1w/1m) | 85 |
| Fs (Hz) | 30.3 |
| Cutout Diameter | 11.25 in. (285 mm) |
| Xmax (mm) | 10 |
| Xmax (mm) | 10 |
| Qts | 0.65 |
| Qes | 0.72 |
| Qms | 7.00 |
| Magnet Weight (oz) | 51 oz. (1.45 kg.) |
| Vas (Liters) | 65.4 |
| Woofer Displacement | 0.039 cu. ft. (1.1 Liters) |
| Re (Ohms) | 6.80 |
| Le (mH) | 4.2 |
| Subwoofer Type | Shallow |
| Voice Coil Type | Dual Voice Coil |
| Sealed Box Volume (Vb) | 0.9 cu. ft. (25.4 Liters) |
| Vented Box Volume (Vb) | 1.79 cu. ft. (50.6 Liters) |
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Installation resources
Wiring diagrams
9
Wiring Diagram #1
Source: Rockford Fosgate
Wiring Diagram #2
Source: Rockford Fosgate
Wiring Diagram #3
Source: Rockford Fosgate
Wiring Diagram #4
Source: Rockford Fosgate
Wiring Diagram #5
Source: Rockford Fosgate
Wiring Diagram #6
Source: Rockford Fosgate
Wiring Diagram #7
Source: Rockford Fosgate
Wiring Diagram #8
Source: Rockford Fosgate
Wiring Diagram #9
Source: Rockford Fosgate
Box Advisor
Sealed Enclosure
- Recommended volume
- 0.9 cu ft
- Volume range
- 0.75 cu ft to 1.25 cu ft
- Dimensions
- 20 in W x 16.75 in H x 7 in D
- F3
- 44.1 Hz
- Qtc
- 1.06
- Port / ID
- 48 in
- Subwoofer size
- 50 in
- Impedance
- 4 ohm
- Power handling (RMS)
- 250 W
Vented Enclosure
- Recommended volume
- 1.79 cu ft
- Volume range
- 1.5 cu ft to 2 cu ft
- Dimensions
- 20.5 in W x 16.5 in H x 13 in D
- F3
- 34.4 Hz
- Tuning (Fb)
- 40 Hz
- Port / ID
- 50 in
- Subwoofer size
- 50 in
- Impedance
- 4 ohm
- Power handling (RMS)
- 250 W
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