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Rockford Fosgate P3SD4-12

Punch Stage 3 shallow-mount 12" subwoofer with dual 4-ohm voice coils

7 Reviews | 2 questions - 2 answers

Item # 575P3S412

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Was: $219.99

Special Purchase: -$70.00

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Our take on the Rockford Fosgate P3SD4-12

Rockford Fosgate's Punch Stage 3 subwoofers come from a long line of high-performance subs that deliver real deal bass. Now, shallow-mount Punch Stage 3 subs make it easier to get impressive low end in smaller or hard-to-fit vehicles.

Rockford's bass pedigree

Rockford Fosgate's Punch Stage 3 subwoofers come from a long line of high-performance subs that deliver real deal bass. Now, shallow-mount Punch Stage 3 subs make it easier to get impressive low end in smaller or hard-to-fit vehicles.

Side view of P3SD4-12 shallow subwoofer

Advanced engineering

The P3SD4-12 12" shallow-mount sub hangs with its bigger brethren, thanks to advanced materials and engineering. Rockford uses an anodized aluminum cone and dust cap that makes the woofer light and easier to drive, yet rigid enough to maintain its shape when you turn it up loud. The M-Roll Santoprene™ surround also provides excellent excursion for maximum output while being durable enough to last.

Powerful bass for a tight space

A low-profile frame houses the sub, with abundant venting to battle overheating and thermal breakdown. At 3-11/16 inches deep, this sub will fit into places where no bass has gone before — just build a custom enclosure or find a suitable box. The dual 4-ohm voice coils allow you to wire up multiple subs or to coax optimum performance from your amplifier.

To drive this single subwoofer, we recommend a mono amplifier rated between 300 and 600 watts RMS at 2 ohms. For more information, please refer to our article on How to Match Subwoofers and Amplifiers.

Product Highlights:

  • 12" shallow-mount subwoofer with dual 4-ohm voice coils
  • anodized aluminum cone with M-Roll Santoprene™ surround
  • power range: 50-400 watts RMS (200 watts per voice coil)
  • peak power handling: 800 watts
  • frequency response: 34-250 Hz
  • sensitivity: 85 dB
  • top-mount depth: 3-11/16"
  • sealed box volume: 0.60-1.20 cubic feet
  • ported box volume: 1.25 cubic feet
  • warranty: 1 year
  • Our 60-day money-back guarantee

The P3SD4-12 performance is awesome is amazing. I have a pair of them hooked up to a 800 watt pioneer amp. and it rocks the house.

Jim, Kcmo

What's in the Box:

  • One shallow-mount 12" Dual 4-ohm voice coil woofer
  • 1 Aluminum trim ring
  • Eight 1-1/8" Allen head self-tapping screws
  • 4mm Allen head bit
  • Installation and Operation manual (English/ French/ Spanish/ German)

Rockford Fosgate P3SD4-12 Reviews

Average Customer Review(s):

(7 Reviews)

Awesome sound

Jim from Kcmo on 12/25/2016

2004 Chevrolet Silverado 2500/3500
Crutchfield Customer Review (What's this?)

The P3SD4-12 performance is awesome is amazing. I have a pair of them hooked up to a 800 watt pioneer amp. and it rocks the house.



Rockford Fosgate P3SD4-12

Anonymous from Trimble, MO on 10/29/2016

Crutchfield Customer Review (What's this?)

We 2 of these in my sons f-150 pushing them with a 1600 watt amp only using around 900 watts and they rock. SUCKS they are out of stock right now since we have a third one and waiting on a fourth to hook up in the old mans truck.



Ps3 rockford 12" 4-ohm

Jon from Hawaii on 1/5/2016

Crutchfield Customer Review (What's this?)

Let a friend use my truck got it back my critical mass sl 12 2-ohm was ripped I didn't want to spend the money to replace with the same sub also can't find it anywhere. So I was a bit iffy about buying these considering it's a few hundred less. they handle 600 less rms watts. But when I put in these ps3's I was amazed that they were handling just as well as the critical mass 12s. I haven't really gave them much juice yet I have them at about 3/8 gain. Great sub sounds good hits hard I'm happy. Btw I have two ps3's in a custom sealed box being ran by alpine pdx1.100 1000w mono block amp and they are wired for 2ohm impedence



great product

RichieT from Louisiana on 1/4/2016

Crutchfield Customer Review (What's this?)

Easy to install and good bass




jaybird from Owensboro, Ky on 8/22/2015

Very Well built, Sounds really good for a shallow sub. Very impressed.

Pros: Shallow design, sound quality, quality of product

Cons: Sounds not as deep as bass as regular sub, but awesome sub for limited space.


Patrick from Yuma, Arizona on 7/16/2014

Crutchfield Customer Review (What's this?)

They work great and are easy to install and use



Very impressed!

Evan Mc from Trenton,MO on 11/17/2012

Crutchfield Customer Review (What's this?)

I bought 2 of these to put in a stealth box under the rear seats of my 2012 silverado crew cab and my god do they beat! This is my first project using shallow mount subs so I had my doubts when I first purchased them but those worries were quickly put to rest. The hits are extremely clean and precise and not to mention loud!!

Pros: They look great sound great and fit in fairly tight spaces I can't get enough of them!

Cons: Your not going to be winning any spl contests but I have no doubt you will be satisfied with these if you have limited space.


Hands-on research

Product Research

Enclosure Compatibility


Shallow Mount Design: The Rockford Fosgate Punch P3SD series shallow subwoofers are designed and engineered with a more shallow motor assembly which reduces the overall depth of the woofer, allowing it to fit in smaller locations in your vehicle. The P3SD4-12 uses an anodized aluminum cone and Santoprene surround. An anodized aluminum voice coil former and spider venting help keep the subwoofer cool.

Dual Voice Coils: This woofer features dual 4-ohm voice coils for wiring flexibility. When the voice coils are wired in parallel, the woofer presents a 2-ohm load. When the voice coils are wired in series, the woofer presents an 8-ohm load.

CEA-2031 Compliant: Power handling on the P3SD4-12 subwoofer conforms to CEA-2031 industry standards. This means the subwoofer has the capacity to handle power under continuous demand, not instantaneous power handling, that over time, can damage voice coils.

FlexFit Basket: The Flex Fit frame utilizes slots (where possible) instead of single screw sized holes; allowing slight adjustment of the speaker when mounted.

VAST Surround: The Vertical Attach Surround Technique (VAST) increases a speaker's effective radiating cone area without increasing the size of the basket.

Anodized Aluminum Voice Coil Former: Aluminum voice coil formers offer superior heat dissipation over other commonly used materials. The hard-anodized finish increases the former strength. These two factors combine to improve the overall power handling characteristics of the subwoofer.

Spring Post Assemblies: The woofer features custom insulated/isolated compression input terminals with attached flexible, 16-gauge stitched tinsel lead wires that can withstand extreme duty cycles, fatigue and high current. The heavy-duty spring posts will accept pin connectors, single banana plugs, and bare wire up to 10-gauge.

Trim Ring: For added cosmetic appeal the woofer comes with an aluminum trim ring that mounts over the flange of the woofer. When using the trim ring, the woofer is first mounted with four screws, then the ring is mounted over the woofer, aligning the final four holes of the woofer with ring. The other four screws are used in these holes to mount the ring and woofer to the enclosure. The trim ring increases the top-mounting height of the woofer to approximately one inch and the ring diameter is 13-3/8 inches.

Break-In Period: Due to the design of the Rockford Fosgate P3 Shallow subwoofer, a 24 to 48 hour break-in period is required to allow for maximum excursion and low frequency extension. The shallow woofer suspension is intentionally designed to optimize once the internal components are exercised under normal music listening conditions.

Enclosure Compatibility

Sealed Box Volume: The sealed box size range recommended by Rockford Fosgate is 0.60 to 1.20 cubic feet. Within this range, the ideal recommended size is 1.0 cubic feet, resulting in a 3dB down point of 40 Hz and a Qtc of 1.01.

Vented Box Volume: The vented box size recommended by Rockford Fosgate is 1.25 cubic feet. One 4" diameter x 12" long port should be used, resulting in a tuning frequency of 42.5 Hz and a 3dB down point of 34 Hz.

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Q & A

Customer Q&A

Crutchfield asked  
Why did you buy this?

Wanted great subs for tight places, couldn't go wrong with these [ Enrique  Mar 06, 2017 ]
Shallow sub with a lot of bass can't beat it [ Hunter  Aug 09, 2016 ]
The P3SD4-12 is a great choice for a quality sub when you have space constraints. [ Chance  Dec 26, 2015 ]
Best ever [ MARTINEZ  Dec 11, 2015 ]
Crutchfield technical support was extremely knowledgeable and helpful in car stereo equipment. These speakers are shallow mount and appear to be meet my requirements for power and efficiency. [ Howard  Dec 05, 2015 ]

2 questions already asked

Thanks for your question. For information on selecting the best amp for your subs I would recommend reaching out to an Advisor by phone (1-800-324-9695) or online chat. They will be able to help determine the differences between the amp models and help you make the best choice for your system. [ Kenny  Jul 25, 2016 ]  Staff
The sealed box size range recommended by Rockford Fosgate for the P3SD4-12 is 0.60 to 1.20 cubic feet and the ported box size recommended is 1.25 cubic feet. If you have a sealed box that can fit the top mount depth of this sub (3-11/16"), then it should work, however it would perform best in a box with a larger internal volume. My Bio: [ Larry  Jan 27, 2016 ]  Staff