Rockford Fosgate P3SD2-8 Punch P3 Slim Series 8" 150W RMS (300W Peak Power Handling) at 2-Ohms, Dual Voice Coil Component Car Subwoofer
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What's Inside?
- • 8" Slim Series Dual Voice Coil Component Car Subwoofer
- • Trim Ring
- • Twelve 1-1/8" Allen Head Screws
- • 4mm Allen Head Bit
- • Owner's Manual
Tiny Footprint, Serious Bass Impact
If you are building in a tight space but still want real low-end authority, the Rockford Fosgate Punch P3SD2-8 shallow subwoofer is made exactly for that kind of setup. Its ultra-shallow motor assembly lets it fit into compact enclosures and tricky vehicle locations without sacrificing performance. Even with its small footprint, it still delivers controlled, punchy bass that feels tight and responsive instead of weak or thin.
Wiring Options That Adapt to Your System
This sub gives you real flexibility thanks to its dual 2-ohm voice coils, letting you wire it for 1-ohm or 4-ohm loads depending on your amplifier goals. That means you can tune your system for maximum output or better balance without being locked into one configuration. With CEA-2031 rated power handling, it is built for consistent long-term performance, so you can push your system confidently without worrying about reliability dropping off over time.
Smarter Design for Bigger Sound in Less Space
The P3SD2-8 uses expanded cone efficiency technology with a VAST surround design that increases radiating area without increasing physical size. That translates into stronger bass output from a compact 8 inch form factor. The FlexFit basket also makes installation easier by allowing fine adjustment for a clean, secure fit in your enclosure. Whether you are going sealed for tight accuracy or ported for more output, this sub adapts cleanly to your build style.
Built to Stay Clean, Tight, and Consistent
Engineered for real-world audio systems, this subwoofer is designed to maintain stable performance under sustained use while keeping distortion low even at higher volumes. The reinforced aluminum trim ring adds protection and a clean finished look, while the optimized enclosure options let you choose between tight sealed bass or more aggressive vented output tuned for extra punch. With shallow depth design, flexible wiring, and strong build quality, it is a compact sub that still delivers a full-size bass experience.
Frequently Asked Questions (FAQ)
- • Why does my P3SD2-8 not sound as powerful as the factory subwoofer?
The P3SD2-8 can be an upgrade, but the final bass level depends heavily on the factory amplifier, enclosure, and wiring. Some owners report noticeably better bass from the Rockford replacement, while others find the factory amplifier limits how much output they can get.
- • Why am I confused about how to wire the two voice coils?
The P3SD2-8 has dual 2-ohm voice coils, so wiring both coils in parallel produces a 1-ohm load, while wiring them in series produces a 4-ohm load. It cannot be wired as a final 2-ohm load using both coils, which has caused confusion among owners.
- • Why does my P3SD2-8 not match the factory speaker's impedance?
A factory system may have been designed around a specific impedance, so choosing the wrong P3S version can affect amplifier performance. Owners replacing factory JBL systems have specifically discussed whether the 2-ohm or 4-ohm version is appropriate for their amplifier.
- • Why doesn't the mounting pattern line up with my original subwoofer?
Physical fit is not guaranteed simply because both speakers are 8 inches. One owner installing a P3SD2-8 in a factory 4Runner location reported that the original mounting holes did not align perfectly and required some fabrication.
- • Why am I having trouble fitting the P3SD2-8 into my factory enclosure?
Shallow depth helps with tight installations, but the basket and mounting area can still interfere with an OEM box. A recent Focus ST owner found that the P3SD2-8 required modification to the stock enclosure despite expecting it to fit based on other owners' experiences.
- • Can I run the P3SD2-8 from the original amplifier?
In some factory applications, yes. A 4Runner owner reported running the P3SD2-8 from the factory amplifier successfully, while other users have considered adding an aftermarket amp when more bass output was needed.
- • Why does my P3SD2-8 sound better but still lack deep bass?
The P3SD2-8 is an 8-inch shallow subwoofer, so enclosure volume and available amplifier power strongly influence low-frequency performance. Users installing it in very compact enclosures have noted that space limitations can restrict the bass response even when the subwoofer itself is capable of good output.
- • Why do I get no sound after connecting all four voice-coil terminals?
Incorrect DVC wiring can cause unexpected results. One 4Runner owner connected all four terminals and initially got no output, then discovered that changing the connection restored operation—highlighting why the two 2-ohm coils must be wired according to the desired final impedance.
- • Why does my P3SD2-8 require extra mounting work even though it is a shallow sub?
Shallow construction solves rear-clearance problems but does not guarantee an OEM bolt-pattern match. Owners have reported creating new mounting holes, modifying panels, or making small enclosure adjustments during factory replacements.
- • Is the P3SD2-8 a good choice for upgrading a factory 8-inch subwoofer?
For many owners, yes. Real-world feedback includes reports of substantially better bass than worn-out factory speakers while retaining the original mounting location and saving cargo space. The main things to verify beforehand are voice-coil impedance, amplifier capability, enclosure fit, and mounting pattern.
- Diameter : 8 Inch
- Sensitivity : 82 dB
- Impedance : 2 Ohm
- Frequency Response : 38-250 Hz
- Peak Power Handling : 300 Watts
- Shallow Mount : Yes Inch
- Number of Voice Coils : Dual
- Suggested Sealed Box Volume : 0.25 Cubic ft.
- Suggested Ported Box Volume : 0.75 Cubic ft.
- RMS Power Handling : 150 Watts
Features:
- Compact High-Impact Shallow Bass Solution: The Rockford Fosgate Punch P3SD2-8 shallow subwoofer is engineered for space-restricted installations, delivering controlled low-frequency output from a compact and efficient design.
- Ultra-Shallow Motor Assembly Design: Reduces overall mounting depth to allow installation in tight vehicle locations and compact enclosures without compromising acoustic performance.
- Dual 2-Ohm Voice Coil Flexibility: Enables wiring configurations for 1-ohm or 4-ohm loads, providing system tuning versatility for a wide range of amplifier setups.
- Heavy-Duty Compression Terminal System: Features spring post terminals supporting pin connectors, banana plugs, and up to 10-gauge bare wire for secure and flexible connectivity.
- CEA-2031 Rated Power Handling: Built to handle continuous power demands according to industry standards, ensuring long-term reliability and consistent performance output.
- Expanded Cone Efficiency Technology: VAST surround design increases effective radiating area for improved bass output without increasing overall subwoofer size.
- Precision FlexFit Basket Design: Slotted mounting structure allows fine adjustment during installation for accurate alignment and secure enclosure fitment.
- Enhanced Thermal and Structural Control: Engineered to maintain stable performance under sustained use while minimizing distortion at higher output levels.
- Reinforced Trim Ring Integration: Includes aluminum trim ring for added protection and a refined visual finish while securing the subwoofer to the enclosure.
- Optimized Sealed Enclosure Performance: Designed for 0.2–0.70 cu ft sealed boxes with an ideal 0.25 cu ft volume for tight, accurate bass reproduction across all music styles.
- Efficient Ported Enclosure Tuning Option: Supports 0.75 cu ft vented designs with 3" x 9" port tuning at 47.5 Hz for increased output efficiency and stronger bass response.
- Balanced Low-Frequency Performance Design: Offers sealed precision and ported efficiency options depending on system goals and amplifier power levels.
- Engineered for Car Audio Enthusiasts: Combines shallow installation capability, wiring flexibility, and enclosure optimization for high-performance mobile audio systems.
Specifications:
- Magnet Weight (kg) NOT USED: 1.06 oz. (37.5 kg.)
- Size: 8"
- 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)
- Qms: 5
- Vas (Liters): 15.8
- Re (Ohms): 3.2
- Le (mH): 0.9
- Nominal Impedance: Dual 2-Ohms
- Power Handling (Watts RMS):
- 150 Watts RMS
- 300 Watts Max
- Magnet Weight (oz): 37.5 oz. (1.06 Kg)
- Qts: 0.72
- Qes: 0.837
- Xmax (mm): 8.3
- Cutout Diameter: 7.13 in. (181.0 mm)
- CEA-2031 Compliant: CEA-2031 Guidelines
- 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)
- Impedance: Dual 2 Ohms
- Dual 10 AWG Compression Speaker Connector
- Linear spider with embedded 16 AWG tinsel leads
- High-temp voice coil with spun-laced Nomex® re-inforcement collar
- Kevlar fiber reinforced paper cone
- StampCast basket with integrated spider venting
- Soft touch ABS trim ring with optional grille
- Custom 10-AWG nickel plated push terminals
- Extended pole piece and bumped vented backplate
- Protective PVC textured magnet cover
- UPC: 780687340728
- Weight: 10
- Authorized Internet Dealer
Warranty: 2 Year(s) Warranty.
This item is accompanied by a manufacturer's warranty. If it is found to be defective, it may be returned to OnlineCarstereo.com for replacement within 2 Year(s) from the original date of purchase with proper return authorization.
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runnin' it with a 200watt amp @ 2 ohms, super clear, no fuzz, and the price is great. clean, crisp bass in my 4Runner, easy install. perfectly complements my Alpine speakers, nice sound.
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I swapped out the sub in my 15-year-old 4Runner with this one a month ago, and it's been performing great. I think I've found the perfect replacement!
