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Variants
Great value for punchy mid‑bass and straightforward installation; performs well in small sealed or ported boxes but isn’t geared for the deepest sub‑30Hz notes.
Buyer confidence
90%Highlights
- 1 Year Warranty
- StampCast basket with integrated spider venting
- Mica reinforced polypropylene cone
- Anodized aluminum voice coil former
Key specs
Full specs- Size
- 10"
- Subwoofer Type
- Standard
- Le (mH)
- 3.9
- Sd (cm2)
- 339.8
- Re (Ohms)
- 7.83
- Vas (Liters)
- 38.4
- Qms
- 6.44
- Qes
- 0.58
Key specs
Full specs- Size
- 10"
- Subwoofer Type
- Standard
- Le (mH)
- 3.9
- Sd (cm2)
- 339.8
Highlights
Overview- 1 Year Warranty
- StampCast basket with integrated spider venting
- Mica reinforced polypropylene cone
Review highlights
Based on customer reviewsPunchy, budget 10" sub with solid power handling
Great value for punchy mid‑bass and straightforward installation; performs well in small sealed or ported boxes but isn’t geared for the deepest sub‑30Hz notes.
What buyers praise
- Strong, punchy mid‑bass for the price
- Good value — high performance on a budget
What to watch for
- Limited deep‑bass extension — may not reproduce ultra‑low (sub‑30Hz) notes strongly
Overview
A compact 10" car subwoofer from Rockford Fosgate's Prime series. The R2D4-10 handles 250 Watt RMS and uses a 4‑ohm dual voice coil to give installers wiring flexibility. Designed for use in sealed or vented enclosures.
Best for
- Car audio enthusiasts looking for a compact 10" sub with reliable bass output
- Installations that require flexible wiring options (4‑ohm dual voice coil)
- Systems needing a driver optimized for sealed or vented enclosures
Key points
- 250 Watt RMS power handling
- 10" mica-injected polypropylene cone
- 4‑ohm Dual Voice Coil (DVC) for multiple wiring configurations
- Stamped-cast basket with spider venting to help keep the motor cool
- Anodized aluminum voice coil former and stitched tinsel leads
- Klippel Verified; CEA-2031 measurement compliance
Fit and use
10" driver size fits common 10-inch subwoofer enclosures. The dual 4‑ohm voice coil lets you wire the driver to match different amplifier impedances or system layouts. Use in a sealed enclosure for tighter, more controlled bass or a vented enclosure for increased low-frequency output; refer to manufacturer enclosure specs for recommended internal volumes.
What to know
Match amplifier RMS output and final load impedance to the subwoofer's ratings when wiring. Klippel verification and CEA-2031 compliance indicate the driver’s performance and measurements follow industry standards. The stamped-cast basket with spider venting is intended to help thermal management under sustained use.
Highlights
Key features
- 1 Year Warranty
- StampCast basket with integrated spider venting
- Mica reinforced polypropylene cone
- Anodized aluminum voice coil former
- Optimized for both sealed and vented enclosures
- 12 AWG compression terminals
- Linear spider with embedded 16 AWG tinsel leads
- Integrated PVC trim ring
- Klippel Verified
- CEA-2031
- Anodized Aluminum Voice Coil Former
- Stitched Tinsel Leads
More info
Manufacturer details
Car Audio Fanatics wanting big bass can rely on the Prime R2D4-10 subwoofer. This 10” subwoofer handles 250 Watt RMS and the 4-Ohm Dual Voice Coil design lets you to wire them in various configurations.
Additional details
Car Audio Fanatics who want Rockford Fosgate quality can rely on the Prime Series 10" subwoofers to get the job done, and the Dual Voice Coil provides awesome installation flexibility. These drivers can pump out the bass due to their mica injected polypropylene cone, and their stamp-cast baskets with spider venting - typically reserved for more expensive models - keep the motor running cool! These R2 subwoofers are optimized for sealed and vented enclosures.
Technologies
Klippel Verified
To adorn the ‘Verified with Klippel’ mark, the qualifying company’s loudspeaker engineering personnel must be
CEA-2031
Power handling on Rockford Fosgate speakers conform to CEA-2031 industry standards. This means your speaker has
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
Stitched Tinsel Leads
Multipoint "periodic" stitched lead wire technique reduces the mass of each tinsel lead and spreads stress and
Specs
Specifications
24
| Size | 10" |
| Subwoofer Type | Standard |
| Le (mH) | 3.9 |
| Sd (cm2) | 339.8 |
| Re (Ohms) | 7.83 |
| Vas (Liters) | 38.4 |
| Qms | 6.44 |
| Qes | 0.58 |
| Qts | 0.53 |
| Fs (Hz) | 34.9 |
| Xmax (mm) | 6.5 |
| Qes | 0.58 |
| Qts | 0.53 |
| Fs (Hz) | 34.9 |
| Xmax (mm) | 6.5 |
| Magnet Weight (oz) | 43 oz. (1.22 kg) |
| Shipping Weight | 8.8 Lbs. (3.99 kg) |
| SPL (dB @ 1w/1m) | 86.6 |
| Woofer Displacement | 0.039 cu. ft. (1.1 Liters) |
| Cutout Diameter | 9.125 in. (232 mm) |
| Power Handling (Watts RMS) | 250 Watts RMS 500 Watts Max |
| Mounting Depth | 4.319 in. (109 mm) |
| Sealed Box Volume (Vb) | 0.59 cu. ft. (16.7 Liters) |
| Vented Box Volume (Vb) | 1.4 cu. ft. (39.6 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
- 0.59 cu ft
- Volume range
- 0.5 cu ft to 0.75 cu ft
- Dimensions
- 17.5 in W x 15.75 in H x 6.25 in D
- F3
- 57.5 Hz
- Qtc
- 0.87
- Port / ID
- 42 in
- Subwoofer size
- 44 in
- Impedance
- 4 ohm
- Power handling (RMS)
- 250 W
Vented Enclosure
- Recommended volume
- 1.4 cu ft
- Volume range
- 1 cu ft to 1.75 cu ft
- Dimensions
- 17 in W x 14 in H x 15.25 in D
- F3
- 36.7 Hz
- Tuning (Fb)
- 43 Hz
- Port / ID
- 44 in
- Subwoofer size
- 44 in
- Impedance
- 4 ohm
- Power handling (RMS)
- 250 W
Support
Return Authorization
If you bought this product from Onkar Electronics, use the Contact Us page on the Onkar Electronics website and we will help with return authorization and warranty support. If you purchased it from another dealer, contact that authorized dealer first for return assistance.
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