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Rockford Fosgate Punch P1S4-15

Punch P1 15" 4-ohm subwoofer

10 Reviews | 3 questions - 4 answers

Item # 575P1S4152

In Stock

Was: $159.99

Special Purchase: -$60.00

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Our take on the Rockford Fosgate Punch P1S4-15

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.

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.

Engineers at Rockford Fosgate designed the P1S4-15 15" subwoofer to dish out the kind of powerful low end you crave in your ride. Its responsive paper cone is reinforced with the same Kevlar® fibers used in bulletproof vests so you get the best of both worlds — warm bass that's exceptionally hard-hitting. 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.

The P1S4-15 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." This sub works equally well in a sealed or ported enclosure, so you can choose the kind of bass you want for your system.

To drive this single subwoofer, we recommend a mono amplifier rated between 200 and 375 watts RMS at 4 ohms. For more information, please refer to our article on How to Match Subwoofers and Amplifiers.

Product Highlights:

  • 15" 4-ohm subwoofer
  • Kevlar® reinforced paper cone
  • nitrile butadiene rubber (NBR) surround
  • hybrid StampCast basket provides strength while minimizing weight and resonance
  • Vertical Attach Surround Technique (VAST™) increases cone area
  • power range: 50-250 watts RMS (500 watts peak power)
  • frequency response: 23-250 Hz
  • sensitivity: 87.5 dB
  • top-mount depth: 7"
  • sealed box volume: 1.3-3.5 cubic feet
  • ported box volume: 2.66 cubic feet
  • warranty: 1 year
  • Our 60-day money-back guarantee

Excellent, sounds clear as day

Marcellus, Powder Springs, GA

What's in the Box:

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

Rockford Fosgate Punch P1S4-15 Reviews

Average Customer Review(s):

(10 Reviews)

Rockford Fosgate Punch P1S4-15

Anonymous from Fowlerville, Mi on 9/5/2017

Crutchfield Customer Review (What's this?)

All Rockford subs are great. This one is no exception. It is the only brand i will buy anymore. I've had them in my car through the years. This one i am using with a 250 watt plate amplifier to make a home theater sub. It shakes the whole house. It even goes lower than my Harbinger 18" pro sub. For the price you won't find anything close.

Pros: Great sub for the $

Cons: None

Rockford Fosgate Punch P1S4-15

dustin from Waterloo, IA on 3/27/2017

2007 Jeep Grand Cherokee
Crutchfield Customer Review (What's this?)

have had for a little over three weeks and now one rattles so loud you can hear it over the music you when you turn it up



Crutchfield response on 3/29/2017 Dustin, we're sorry you're having problems with your sub. Whenever you encounter a problem with anything you purchase from Crutchfield, please contact our tech support team right away. They can either help get the sub working the way it should, or possibly return it for an exchange or refund.

Rockford Fosgate Punch P1S4-15

Marcellus from Powder Springs, GA on 2/6/2017

2000 Honda Accord
Crutchfield Customer Review (What's this?)

Excellent, sounds clear as day




Solon from Kokomo, IN on 11/10/2016

I'm giving this 5 stars for a reason. I debated for weeks on a good sub to get for my car, I hesitaded between this one and a other Rockford. Let me just say this, if our confused on a sub to buy....oh my freaking gosh BUY THIS one!!!!!! It was absolutley worth the money. My god this sub is outstanding. I don't know what else to say.

Pros: Great Price Easy to install Sounds deep and very high-end Great quality All around just an absolutley amazing product

Cons: Why doesn't this by sub Rockford have more recognition?


DG from Phx on 9/5/2016

Crutchfield Customer Review (What's this?)

Built a rock solid 2 cubic foot sealed enclosure for one of these P1. Very accurate sound, not muddy. (strong motor with a light moving mass) I like the 15's over any other size because they dip low on the freq. When certain bass lines hit in a song, you cant ignore the presence when a 15 plays it. Other sizes sound nice but im very glad I finally stepped up to the 15.



Bumpin sub

Matthew R from Rochester, NY on 4/17/2016

2008 Honda Pilot
Crutchfield Customer Review (What's this?)

When I originally bought this sub I used it in the manufacturer's recommended ported enclosure that I built myself. Despite it being the first sub box I ever made, it sounded amazing. There were some noticeable flaws with my box (mainly air leaks around the port) but the sub shined right on through. I would also highly recommend using double flared ports for this sub because it moves a LOT of air.

Pros: Great value. Rockford Fosgate quality. Low power handling (can work with many amps). Great sound quality.

Cons: Low power handling (can be overdriven easily if you are not careful with amp selection and gain settings). Decorative trim is a hard plastic which could possibly create mechanical noise if it isn't fastened down properly, would have loved to see a tough rubber.

Best bang for the buck

Amilcars s from Gaithersburg, MD on 4/3/2016

Crutchfield Customer Review (What's this?)

Bass is very deep

Pros: Big deep bass

Cons: 15" takes up space but worth it

Great speaker

Martin S from Mt.Vernon Texas on 3/18/2015

Great speaker. I'm gonna put it in my 92 dodge dually and see what it does in there. RN its hooked up to old school system. Does great.

Pros: Hits hard, makes great low sound

Cons: At one time it was tweeting cause something inside was acting up but fixed it

P1 15

Derek from Phoenix, AZ on 10/28/2014

Have them hooked up to an old school bd1000a and they definitely get the air moving. Upgraded from an r2 12" and the difference is insane (as expected). Definitely would recommend these to anyone

Pros: Having 2 giant 15's staring at you when you open the trunk is awesome. They sound good on the rock and dub step that I listen to, and can definitely get low.

Cons: Only complaint I would have is they hang over the top and bottom of my prefab box, but that's probably the box

Rockford Fosgate Punch P1S4-15

Anonymous from Odessa, TX on 11/19/2013

Crutchfield Customer Review (What's this?)

Great product happy as alway with Rockfords quality

Pros: Great sound

Cons: None


Hands-on research

Product Research

Enclosure Compatibility


Overview: The Rockford Fosgate Punch P1S4-15 is a 15-inch subwoofer with a single 4Ω voice coil. The sub features a StampCast steel frame, quick-release compression terminals, a Kevlar fiber reinforced paper cone, and NBR surround (Nitrile Butadiene Rubber). An anodized aluminum voice coil former and spider venting help keep the subwoofer cool.

Steel Basket: The P1S4-15 subwoofer features a StampCast steel basket for added rigidity.

Compression Terminals: The P1S4-15 features spring post terminals which accommodate speaker wire up to 10 gauge.

CEA-2031 Compliant: Power handling on the P1S4-15 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 PVC 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. The trim ring increases the mounting height of the woofer to 7/8 of an inch.

Enclosure Compatibility

Sealed Box: Rockford recommends a sealed enclosure with an optimum internal volume of 1.58 cubic feet (from 1.3 to 3.5 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 8" long port; this yields a tuning frequency of 34.4 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 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?

Better car audio sound [ T  Oct 18, 2017 ]
Wanted to upgrade to a bigger speaker [ Marcellus  Jan 24, 2017 ]
for my son [ Brett  Dec 19, 2016 ]
I used one before to make a ported sub for my Nissan Altima and it was amazing. Soon I will be upgrading to a suv and I wanted to create a new box with 2 subs so I bought another. Hopefully everything will go great and sound even better! [ Matthew  Apr 04, 2016 ]
Got it at a great price [ Garrett  Feb 09, 2016 ]

3 questions already asked

This subwoofer can work in both box types. It needs 1.3-3.5 (1.58 is ideal) cubic feet in a sealed box or 2.66 cubic feet for a ported box. I recommend calling an advisor on 1-800-324-9695 if you need help choosing between these two box types. My Bio: [ Paul  Sep 11, 2017 ]  Staff
Honestly if your systems is wired correctly and you have your amp settings correct 3-5 hours [ Cole  May 31, 2016 ]
I had mine in my truck for around 3 weeks only running 300 watts to it and it didn't break in from that and the reason it wasn't in there longer is because the thing blew. [ Ian  May 30, 2016 ]