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Variants
Solidly built and surprisingly punchy for an 8-inch shallow sub — a good drop-in replacement that delivers clean, tight bass when installed and powered appropriately.
Buyer confidence
92%Highlights
- 1 Year Warranty
- M-Roll Santoprene™ surround
- Anodized aluminum cone and dustcap
- Shallow Motor Assembly
Key specs
Full specs- Magnet Weight (kg) NOT USED
- 1.06 oz. (37.5 kg.)
- Qms
- 5
- Size
- 8"
- Le (mH)
- 0.9
- Speaker Connector
- Dual 10 AWG Compression
- Mounting Depth
- 2.66 in. (67.5 mm)
- Voice Coil Diameter
- 2" (51.6mm)
- Shipping Weight
- 8.8 Lbs. (3.99 Kg.)
Key specs
Full specs- Magnet Weight (kg) NOT USED
- 1.06 oz. (37.5 kg.)
- Qms
- 5
- Size
- 8"
- Le (mH)
- 0.9
Highlights
Overview- 1 Year Warranty
- M-Roll Santoprene™ surround
- Anodized aluminum cone and dustcap
Review highlights
Based on customer reviewsPunchy, well-built shallow 8-inch sub that fits many factory systems
Solidly built and surprisingly punchy for an 8-inch shallow sub — a good drop-in replacement that delivers clean, tight bass when installed and powered appropriately.
What buyers praise
- Robust build quality and secure terminals
- Punchy, tight and clean low-end for an 8-inch driver
What to watch for
- May require drilling new mounting holes or spacers/modifications to fit some factory enclosures
Overview
The Punch P3S 8" shallow-mount subwoofer (P3SD2-8) is designed to provide bass where mounting depth is limited. It features dual 2‑ohm voice coils for flexible wiring and a 150W RMS power rating.
Best for
- Vehicles with restricted mounting depth or shallow enclosures
- Installers needing wiring flexibility via dual voice coils
- Compact systems that require a smaller subwoofer footprint
Key points
- 8" shallow-mount woofer designed for limited-depth installations
- Dual 2‑ohm voice coils for multiple wiring options
- 150 Watts RMS power handling (per manufacturer spec)
- Technologies: Klippel Verified, CEA-2031, FlexFit Basket, Anodized Aluminum Voice Coil Former, Stitched Tinsel Leads, VAST Surround
Fit and use
Intended for use in enclosures or vehicle locations with limited depth. Dual voice coils allow wiring to different impedances—match the resulting impedance to an amplifier that can deliver appropriate RMS power. Check the subwoofer’s mounting depth and cutout requirements against available space before purchasing.
What to know
This is an 8" shallow subwoofer; smaller cone area typically provides less deep bass extension than larger subwoofers. RMS power rating (150W) describes continuous power handling—ensure your amplifier and enclosure match the speaker's specifications. Confirm physical mounting dimensions and wiring configuration with t…
Highlights
Key features
- 1 Year Warranty
- M-Roll Santoprene™ surround
- Anodized aluminum cone and dustcap
- Shallow Motor Assembly
- StampCast basket with integrated spider venting
- Optimized for both sealed and vented enclosures
- Dual linear spider with embedded 16 AWG tinsel leads
- Diamond cut cast aluminum trim ring with optional grille
- Klippel Verified
- CEA-2031
- FlexFit Basket - Subwoofer
- Anodized Aluminum Voice Coil Former
More info
Manufacturer details
Rockford Fosgate P3S 8" shallow mount subwoofer delivers “Punch” even when depth is limited. The P3SD2-8 features Dual 2-Ohm voice coils for wiring flexibility and 150 Watts RMS power handling.
Additional details
The Rockford Fosgate P3S 8" shallow mount subwoofer delivers Punch, even in depth limited situations. Rockford Fosgate understands all vehicles are not the same, because some cannot accommodate deep subwoofers. In the past, that meant no Bass. Not anymore! Now even depth challenged vehicles can have REAL Bass and the Dual Voice Coil allow configurations for every application. Shallow woofers are specifically designed for spaces where a traditional woofer cannot be used.
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
FlexFit Basket - Subwoofer
The slot mounted frame pattern of the FlexFit basket utilizes slots (where feasible) instead of single screw sized
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
Patent: Patent Pending
VAST Surround - Subs
Rockford Fosgate's proprietary surround technique, VAST, provides up to a 25% increase in the speakers effective
Specs
Specifications
25
| Magnet Weight (kg) NOT USED | 1.06 oz. (37.5 kg.) |
| Qms | 5 |
| Size | 8" |
| Le (mH) | 0.9 |
| Speaker Connector | Dual 10 AWG Compression |
| Mounting Depth | 2.66 in. (67.5 mm) |
| Voice Coil Diameter | 2" (51.6mm) |
| Shipping Weight | 8.8 Lbs. (3.99 Kg.) |
| SPL (dB @ 1w/1m) | 82 |
| Woofer Displacement | 0.040 cu. ft. (1.13 Liters) |
| Re (Ohms) | 3.2 |
| Vas (Liters) | 15.8 |
| Qts | 0.72 |
| Magnet Weight (oz) | 37.5 oz. (1.06 Kg) |
| Power Handling (Watts RMS) | 150 Watts RMS 300 Watts Max |
| Nominal Impedance | Dual 2-Ohm |
| Qes | 0.837 |
| Xmax (mm) | 8.3 |
| Cutout Diameter | 7.13 in. (181.0 mm) |
| Fs (Hz) | 38 |
| Sd (cm2) | 220 |
| Subwoofer Type | Shallow |
| Voice Coil Type | Dual Voice Coil |
| Sealed Box Volume (Vb) | 0.25 cu. ft. (7.0 Liters) |
| Vented Box Volume (Vb) | 0.75 cu. ft. (21.2 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
- 0.25 cu ft
- Volume range
- 0.2 cu ft to 0.7 cu ft
- Dimensions
- 16.5 in W x 10 in H x 5 in D
- F3
- 49.3 Hz
- Qtc
- 1.29
- Port / ID
- 11 in
- Subwoofer size
- 11 in
- Impedance
- 3 ohm
- Power handling (RMS)
- 150 W
Vented Enclosure
- Recommended volume
- 0.75 cu ft
- Dimensions
- 24 in W x 14 in H x 6 in D
- F3
- 37 Hz
- Tuning (Fb)
- 47.5 Hz
- Port / ID
- 11 in
- Subwoofer size
- 11 in
- Impedance
- 3 ohm
- Power handling (RMS)
- 150 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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