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Rockford Fosgate P3D4-15

Punch P3 15" subwoofer with dual 4-ohm voice coils

Item # 575P3D415

Item # 575P3D415

Ships from distributor

Temporarily out of stock

C$609.99 -C$30.00 Price break

C$579.99 each

About the Rockford Fosgate P3D4-15

Standout performance

Rockford Fosgate showcases their fanatical commitment to sonic excellence in the Punch Series of speakers, amps, and subs. If you like to listen to potent, powerful music — and feel it too — Punch components will give you impressive sound that'll stand out in a crowd.

Exploded view

Designed for deeper, louder bass

Rockford Fosgate designed the P3D4-15 15" subwoofer to stay strong even when the bass gets hot. This Punch P3 sub features a rigid anodized aluminum cone that holds its shape through heavy play, while staying light and responsive. Rockford Fosgate uses a new technique to attach the oversized rubber surround to the cone that increases available cone area up to 25%, so this sub can push more air for even bigger bass.

Heat-sink cone

The aluminum cone acts as a giant heat sink, directing heat away from the copper-clad aluminum voice coils. Special venting keeps the voice coils cool, so you get incredibly consistent bass performance over time. This P3 sub features an extended pole piece and bumped backplate that leaves more room for heavy excursion, so it'll hit deeper lows without "bottoming out."

The dual 4-ohm voice coils allow you to wire the sub for 2-ohm impedance to get maximum power output, or for 8-ohm impedance if you're using multiple subs. The P3D4-15 sub works equally well in a sealed or ported enclosure, so you can choose the kind of bass you want for your system.

Product highlights:

  • 15" subwoofer with dual 4-ohm voice coils
  • anodized aluminum cone with Santoprene surround
  • hybrid StampCast basket provides strength while minimizing weight and resonance
  • Vertical Attach Surround Technique (VAST™) increases cone area
  • power range: 300-600 watts RMS (1200 watts peak power)
  • frequency response: 22-250 Hz
  • sensitivity: 86 dB
  • top-mount depth: 7-5/8"
  • sealed box volume: 1.5-3.0 cubic feet
  • ported box volume: 2.66 cubic feet
  • grille not included
  • warranty: 1 year
  • Our 60-day money-back guarantee
  • MFR # P3D4-15

What's in the box:

  • One 15" Dual 4-ohm voice coil subwoofer
  • Trim ring
  • Twelve 1-1/8" Allen head screws
  • 4mm Allen head bit
  • Installation/Operation manual (English/ French/ Spanish/ German)

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Rockford Fosgate P3D4-15 reviews

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Crutchfield response

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More details on the Rockford Fosgate P3D4-15

Pat M.

Product Research

Enclosure Compatibility


Overview: The Rockford Fosgate Punch P3D4-15 is a 15-inch subwoofer with dual 4Ω voice coils. The sub features a hybrid StampCast basket, quick-release compression terminals, anodized aluminum cone, and Santoprene surround. An anodized aluminum voice coil former and spider venting help keep the subwoofer cool.

Dual 4Ω Voice Coils: The dual 4Ω voice coils offer wiring flexibility; when wired in parallel the woofer presents a 2Ω load, when wired in series the woofer presents an 8Ω load.

Compression Terminals: The P3D4-15 features spring post terminals which accommodate speaker wire up to 10 gauge.

CEA-2031 Compliant: Power handling on the P3D4-15 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.

Trim Ring: To improve the cosmetic look, a decorative trim ring is included that mounts over the flange of the woofer. When using the cast aluminum trim ring the woofer is first mounted with four screws, then the ring is placed on top of the woofer, aligning the final four holes of the woofer with ring. The other four screws are used for these holes to mount the ring and woofer to the enclosure. Without the trim ring the mounting height of the woofer is just under an inch, with the trim ring it's approximately 1-1/16 inches. The diameter of the trim ring is approximately 16-3/8 inches.

Enclosure Compatibility

Sealed Box: Rockford recommends a sealed enclosure with an optimum internal volume of 1.58 cubic feet (from 1.5 to 3.0 cubic feet is acceptable). Sealed enclosures provide the most control over a woofer, will handle a lot of power, and provide accurate sonic reproduction, making them suitable to all types of music.

Ported Box: Rockford recommends a ported enclosure with an internal volume of 2.66 cubic feet using one 4" diameter x 10" long port; this yields a tuning frequency of 32 Hz. Ported (or vented) enclosures typically provide better overall efficiency than sealed so they are suitable for use with smaller amplifiers, giving you more bass output from less power. However, this efficiency comes at the expense of very low frequency output (below 30 Hz).

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Customer Q&A

6 questions already asked

What is the wattage?
[ Paul  Jul 18, 2021 ]
2 answers
Peak-1200. Rms-600
[ Toby  Jul 18, 2021 ]
600 watts RMS per sub at 4ohms my two 4ohm DVC P3 subs are cabled to My KICKER amp in parallel sending 1200 watts to my pair at 1ohm
[ MICHAEL  Jul 18, 2021 ]
What would be the best amp for having 2 of these hooked up?
[ Travis  Jun 28, 2020 ]
1 answer
As far as the best amp goes there are multiple choices,I have 2 of these hooked up to a punch 1000 mono amp wired down to 1ohm and it slams
[ ERIC  Jul 03, 2020 ]
Can I build a bandpass box with this speaker?
[ Nathan  Apr 13, 2020 ]
3 answers
Hi Nathan, thank you for your question. Rockford Fosgate does recommend using only a sealed or ported enclosure for this particular subwoofer, and the manufacturer does recommend that if you are not going to use one of the recommended enclosures, to consult technical support to confirm correct application guidelines. If you have purchased or plan to purchase this subwoofer from Crutchfield, you may contact technical support during your installation.
[ Jess  Apr 28, 2020 ]  Staff
You can use a bandpass box with any speaker, but I wouldn't recommend it with this one. With a quality amp, this sub will make all the low end bass you could ask for, all the way down to infrasonic frequencies.
[ Shane  Apr 23, 2020 ]
Absolutely. These speakers will love it.
[ Anonymous  Apr 23, 2020 ]
if a 15'' sub is 2.66 and box is 3.64 what will that do to the sounds?
[ t  Sep 17, 2018 ]
1 answer
Won't really affect sound. More air to move. Just make sure your subsonic filter is set just under the box is tuned around 35-36hz.The sub itself will take up some space. Honestly if your looking at purchasing these two together I say go for it! You will not regret it. I have that box with a kicker comp r 15 and love it! I did a review on the box if you wanna check that out, Amazing box for a prefab!
[ Austin  Sep 18, 2018 ]
It says the idea sealed box volume is 1.58 cubic feet ...if I build a box to exactly that volume and then put this huge speaker in it the volume will be drastically reduced ... so dose the box volume include the volume lost by the speaker volume ???
[ David  Apr 02, 2017 ]
4 answers
After further research I found out that Rockford Fosgate gives you dimensions to build a "idea" box for this Sub. The dimensions they give is 18x21x10 witch is outside dimensions ... using 3/4" MDF would yield 16.5x19.5x8.5 inside dimensions witch would give you 1.58 cubic feet of volume... so Shawn gave the correct answer ... Rockford Fosgate dose take into consideration the volume of their Sub when they say the "IDEA" box size is 1.58 cubic feet...Of course you can build your box to what ever size you want as long as the inside dimension is 1.58 cubic feet and of course the sub. fits in it...
[ David  Apr 04, 2017 ]
It would be reduced. I don't have the manual for these in front of me but I do remember that it included volume figures for the speaker so you would be able to construct your enclosure to the correct dimensions.
[ Bill  Apr 04, 2017 ]
The dimensions provided from Rockford are taking speaker volume into consideration, Make sure you use 3/4" medium density fiberboard.
[ SHAWN  Apr 04, 2017 ]
No. The volume of the box does not include the space of the sub. If you bought it new, the owners manual tells you the displacement size of the sub. Then add that to your blueprints for the build.
[ Andrew  Apr 04, 2017 ]
Will these speakers work is it minor scratches?
[ Robert  Mar 13, 2016 ]
1 answer
If you are asking about our Scratch and Dent stock then yes. Scratch and Dent items have very minor cosmetic defects that would not affect the operation of the item. Everything still comes with our 60 day guarantee and manufacturers warranty. Hope that helps.
[ Kenny  Mar 14, 2016 ]  Staff

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