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Rockford Fosgate P2D4-8 (Newest Model)

250W 8" Punch Stage 2 Dual 4 ohm Subwoofer

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List price $129.99

$64.99

with warranty

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Arrives by Monday, July 28 to zip 20147

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In Stock

Arrives by Mon, July 28

Bundled Savings with this Product

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10% Off on the Subwoofer Box!

Save 10% off a 8" sealed subwoofer enclosure with your purchase!

5.00

36285

523

Rockford Fosgate P2D4-8 (Newest Model)

$64.99

+

10% OFF

Ground Shaker SQ 1 8-BLACK

$49.95

Special Price $44.95 ($49.95 if purchased separately)

Ground Shaker SQ 1 8-BLACK

• 8 Pro Single Sealed Square Subwoofer Box
• 5/8" Medium Density Fiberboard Construction
• Total box volume: 0.48 cubic feet

(Offer 1 of 1)

Combined Total Price

$109.94

You Save $5.00

2 Punches and You're Out!!

When it comes to car subwoofers, Rockford Fosgate raised the bar in terms of high quality affordable subwoofers. These Punch Stage 2 subwoofers are the perfect combination of price and deep bass. The new 2011 Punch Stage 2 series will crank out 250 watts of RMS power handling, giving you that nice deep base with out over powering your audio system. The face of the woofer has been upgraded with a kevlar reinforced paper cone that will provide durability and great sound quality. For those long sessions of hard hitting bass, the rubber surround has been manufactured to handle high excursion movements through out the day. With their patented technology the Rockford Fosgate P2D4-8 are the perfect match for those looking for quality bass without braking the bank.

 
Anodized Aluminum Voice Coil Former

Anodized Aluminum Voice Coil Former

By using an anodized aluminum voice coil former on their subwoofers, Rockford Fosgate is able to dissipate heat from the voice coil more efficiently. A hot voice coil can melt the adhesive bonds, which will lead to eventual subwoofer failure. The aluminum voice coil former acts as a heat-sink to dissipate thermal build-up on the voice coil cool during high SPL conditions.

 
CEA-2031 Rockford Fosgate Subwoofers

Conforms to CEA-2031

Rockford Fosgate has built this subwoofer to conform to the CEA-2031 loudspeaker power handling industry standards. This means that you can trust the subwoofer to have the capacity to safely handle the continuous (RMS) power rating. Having a CEA-2031 power handling is important when matching a subwoofer to an amplifier because the power ratings are accurate.

 
Rockford Fosgate Stitched Tinsel Leads

Stitched Tinsel Leads

To improve the reliability and performance by reducing fatigue and possible shorting, Rockford Fosgate has stitched the tinsel leads to the spider. The multipoint periodic stitching lead wires reduce the mass of the tinsel leads to spread the stress over a greater area. This improves the reliability and performance of the subwoofer.

 
Rockford Fosgate VAST Surround

VAST: Vertical Attach Surround Technique

In order to increase the surface area of the cone without causing any installation issues, Rockford Fosgate designed the Vertical Attach Surround Technique (VAST). By redesigning the manner in which the surround adheres to the basket, these speakers gain up to 25% more effective radiating cone area. This improves the nominal efficiency and maximum output.

 
Product Features:
  • 8" Dual 4 ohm Punch Stage 2 Subwoofer
  • Power Handling:
    • Peak: 500 watts
    • RMS: 250 watts
  • Impedance: Dual 4 ohm
  • Kevlar fiber reinforced paper cone woofer
  • VAST surround technology for larger surface area
  • Dual linear spiders with woven tinsel leads
  • Extended pole piece with bumped vented backplate
  • 2-1/4" High-temp voice coil with spun-laced Nomex re-inforcement collar
  • Protective PVC cover over the powerful magnet
  • StampCast basket with integrated spider venting
  • Frequency response: 43-250 Hz
  • SPL (dB @ 1w/1m): 83 dB
  • Top mount depth: 4-3/4"
  • Cutout diameter: 7-1/8"
  • 1-year SonicElectronix.com warranty

Product History:

Rockford Fosgate P2D4-8 thumbnail
(newest, current model)
Rockford Fosgate P2D48 thumbnail
(previous model, replaced by Rockford Fosgate P2D4-8 (Newest Model))

Subwoofer Specifications

Subwoofer Series
Each subwoofer manufactured is part of a series. This is the name of the subwoofer's series.
Punch P2 (Rockford Fosgate)
Subwoofer Size
Refers to the diameter of the subwoofer, measured in inches.
8"
Peak Power Handling
Peak power handling refers to the amount of power a speaker can handle during a brief musical burst. The RMS power range figure is a much more reliable rating for determining the speaker's power requirements. The Peak power handling specification is typically rated per speaker unless otherwise noted.
500 watts
RMS Power Handling
The RMS power is the amount of power the speaker requires to operate safely and properly. RMS Power Handling refers to the amount of power a speaker can handle on a continuous basis. We recommend powering your speakers or subwoofer with 80%-120% of its recommended RMS rating. The RMS power handling specification is typically rated per speaker unless otherwise noted.
250 watts
Voice Coil(s)
Dual voice coil subs have more wiring flexibility than single voice coils subs; however, single voice coil subwoofers provide easier hookup options for wiring multiple subwoofers in parallel or series. You may also run a dual voice coil (DVC) sub in parallel, series, or combination. A quad voice coil has four voice coils and is equal to two dual voice coil subwoofers as far as wiring goes.
Dual
Impedance (Per Voice Coil)
The load value (in ohms) that the speakers present to the amplifier per voice coil - the amount of resistance to the current flow. This is a key specification as subs wired in parallel or low impedances can create problems with your amplifier and potentially void all warranties. We encourage you to ask our support department prior to purchase if you do not understand which impedance level will suit your application best.
4 ohms
Voice Coil Diameter
Diameter of voice coil, usually measured in inches.
2.25"
Frequency Response
The range of frequencies the speaker will reproduce (lowest frequency to the highest). Bigger is better, meaning the wider the range, the better. The optimal range is 20 - 20,000 Hz (which is the range of human hearing).
43 - 250 Hz
Sensitivity
An efficiency or sensitivity rating tells you how effectively a speaker converts power into sound. The higher the number, the more efficient the speaker and the louder it will play with the same input power. An efficient speaker helps you maximize your available power. Most sensitivity ratings measure the speaker's output with 1 watt of input, 1 meter from the speaker. Some speakers' sensitivity is measured with 2.83 volts of input, instead of 1 watt.
 
Efficiency (1w/1m) is not an accurate indicator of a subwoofer's output capability and should not be used as a comparison to other speakers or subwoofers to determine which one is "louder".
83 dB
Xmax (millimeters)
Typically measured in millimeters, the Xmax value is the measure of a speaker cone's maximum excursion in one direction while maintaining a linear behavior.
5.8 mm
Subwoofer Design
This is the design of the subwoofer or the opening of the subwoofer enclosure. Each design has it's own benefits, whether it is a square, circle, or oval.

Round/Circle: This is the typical and common subwoofer design. They have a round cone and are a circle in design.

Square: These woofers are able to achieve a greater cone area in a smaller space. Because of the greater surface area, some square subwoofers will be louder than a round subwoofer of the same size.

Round / Circle
Main Cone Color
This is the color of the speaker's or subwoofer's cone.
Black
Woofer Composition
Lightweight woofer cone materials are essential for efficient operation. Poly cones produce exceptional sound and are sturdy against various changes in temperature. Paper cones are very efficient, and when treated for moisture resistance, will perform at a high level. Poly refers to polypropylene, which is thermoplastic or fibers that are polymers of propylene. IMPP refers to injection molded polypropylene, a commonly used process and material in speakers.
Kevlar Reinforced Pulp (Paper)
Woofer Surround
A speakers surround is part of the suspension system. The surround protects the cone and prevents it from being displaced as it flexes out from the basket. It is usually made of a durable material like treated foam or rubber in order to withstand the strenuous job of producing bass frequencies.
Rubber
Subwoofer Grille
Most subwoofers are able to accommodate a universal grille; however, some subs include a grille and others have a specific, optional grille available for purchase separately. If "yes", then the subwoofer includes a grille. If "optional (sold separately)" the matching grille will need to be purchased in addition to the sub.
No
Re-Cone Kit Available
Some higher end subwoofers have replaceable cone assemblies. In case of a blown woofer, a recone kit allows for a simple replacement, as opposed to purchasing an entire new subwoofer.
No

Recommended Enclosure Specifications

Recommended Enclosure Type
This is the recommended type of enclosure that the subwoofer should be installed into. Some subwoofers are specially designed for particular enclosures.

Sealed: These enclosures completely enclose the air inside the box. These boxes produce a tight bass.

Ported/Vented: These enclosures have a slot of air to escape from the box. The result is a sound that has more "boom".

Bandpass: These are a combination of both sealed and ported enclosures. They can be very efficient, but require tuning for the best response.

Ported / Vented
Sealed
Minimum Sealed Box Volume
This value indicates the minimum sealed box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
0.20 cubic feet
Maximum Sealed Box Volume
This value indicates the maximum sealed box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
0.30 cubic feet
Minimum Ported Box Volume
This value indicates the minimum ported box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
0.65 cubic feet
Maximum Ported Box Volume
This value indicates the maximum ported box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
0.65 cubic feet
Top-Mount Depth
The depth when installed on top of the mounting surface. Measured from the bottom of the speaker's magnet to the bottom of the mounting holes on the rim of the speaker.
4-3/4"
Cutout Diameter
The actual diameter of the hole you will need to cut out if you are creating a new mounting location for this speaker, or if you are mounting a subwoofer in a box.
7-1/8"
Shallow Mount Installation
This means that the subwoofer/speaker is designed to be installed in areas that do not have a lot of space. Shallow mount subwoofers are typically found under a seat or behind the seat in some trucks.

Shallow mount speakers will typically have a mounting depth of 2" or less, while shallow mount subwoofers will typically have a mounting depth of 3" or less.

No

Electromechanical Parameters

Free-Air Resonance (Fs)
The free-air resonance frequency of the subwoofer, measured in Hz. At this frequency the weight of the moving parts is perfectly balanced with the subwoofers suspension system.
43.00 Hz
Equivalent Compliance (Vas)
This is the amount of air that has the same stiffness as the subwoofers suspension. The greater the rating, the lower the stiffness and larger recommended enclosure. It is measured in Liters.
9.9 liters
Total Speaker Q Value (Qts)
This is the subwoofers relative damping (Q) at the resonance frequency (Fs), including all dimensionless losses. Essentially, a high Qts value (closer to 1.0) means the subwoofer is great for sealed enclosures and a low Qts value (closer to 0) means the woofer is great in vented enclosures. A Qts of around 0.45 means the woofer will work decently in either enclosure type.
0.52
Electrical Q Value (Qes)
The subwoofers relative damping (Q) at the resonance frequency (Fs), including electrical losses. Also called the mechanical damping of the subwoofer. The unitless measurement usually varies from 0.5 10.
0.58
Electrical Resistance of Voice Coil (Re)
Amount of DC resistance of the subwoofer when measured with an ohm meter. Typically, this will read less than the impedance rating of the subwoofer.
6.90 ohms
Mechanical Q Value (Qms)
This is the subwoofers relative damping (Q) at the resonance frequency (Fs), including mechanical losses. Also called the mechanical damping of the subwoofer. This unitless measurement usually varies from 0.5 10.
5.40

Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Sonic Electronix

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
75%
4 Star
13%
3 Star
13%
2 Star
0%
1 Star
0%

Average Attribution Rating

Durability
4.6
Value
4.8
Features
4.5
Design
4.8
Usability
4.8

punch

taylor p.a.

Overall
Durability
Value
Features
Design
Usability

Little Pounders

August 20, 2013

I bought 2 of these subs and put them in a vented box in the trunk of my a grand am. WOW!!! I didn't expect them to hit this hard they sound like a 15 inch sub in trunk!!! however 2 8 inch subs clears 15 inches in surface area. so people who think 1 12 will hit harder then 2 8s is wrong as long as you power them correctly. Im pleased with these subs I highly recommend if you're trying to save space in car and money.

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Big Time the emcee from BNO aka Bold Niggaz Only

philadelphia, PA

Overall
Durability
Value
Features
Design
Usability

Bang for the buck

July 15, 2014

This 8 inch was purchased for my 2004 acura tl for the rear dash and after realising the magnet was too big and some cutting it fit perfectly in the middle of the rear dash. However, it isnt a closed air sub so i had to either build a casing around it or put it in a box and after some serious thought i put it in a box and its perfect. For trunk space im going to get a custom casing so i can put it back in the rear dash. I would recommend this to those who want a nice sub for a excellent price thats not too loud and not to low

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Chad

MESA, AZ

Overall
Durability
Value
Features
Design
Usability

Good product

April 21, 2014

I have to say Rockford Fosgate makes good equipment, BUT the down side is you see it in EVERY vehicle on the road. I have 2 Orion HCCA 15's & I have this 8 inch hidden in my center consul for mid bass.

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Mike

AZ

Overall
Durability
Value
Features
Design
Usability

WOW!! Great sub

January 26, 2014

This sub hits hard for being an 8". The design & feel of it is more than I expected. You would think this is a 1000w sub just by the design. I just bought one & wired to 2 ohm in a ported box. I listen to classic rock, hip hop, & reggae and this sounds great for these genres. I would definitely recommend this sub.

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Platinum

Homer, Louisiana

Overall
Durability
Value
Features
Design
Usability

Awesome Product!

January 9, 2014

I recommend this product because it's a great product at a great price. You can't go wrong with Rockford or Sonic Electronix!

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Al

Claremore, OK

Overall
Durability
Value
Features
Design
Usability

Nice thumpers

December 17, 2013

I replaced old and torn sub woofers speakers with these and WOW. I have the furniture vibrating around the room again YEA!!!

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lonnie

Harlem, GA

Overall
Durability
Value
Features
Design
Usability

great value

October 31, 2013

these subs are awsome i have 4 of them with a hifonics amp running at 2 ohms

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steve

middletown, OH

Overall
Durability
Value
Features
Design
Usability

Excellent 8"

October 16, 2013

Excellent sub for the size and $, but i felt it lacked the depth from the Hz freq i was looking for. It filled the gap the interior speakers were lacking but i personally wanted the deeper sound that a 10"+ sub could deliver.

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Matt

Milwaukee, WI

Overall
Durability
Value
Features
Design
Usability

Love it.

September 18, 2013

Great sub! Great sound. Small enclosure for a sealed use. I have it paired with a GM-D8601. Great pair for a stock system. Might be a little small for a full aftermarket system by itself.

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Bass head 49

Stockton, CA

Overall
Durability
Value
Features
Design
Usability

8's will shake ya!

September 11, 2013

I have four 8's in my 2005 Honda accord sound awesome, these little 8's can hit some low notes I'm very impressed.

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GravyGoodness

Elm City, NC

Overall
Durability
Value
Features
Design
Usability

Awesome Sub For the Price

April 24, 2013

After some searching and trying different products, I finally stayed with this sub. Running 2 of them in a custom ported box under the back seat in a 4-door Silverado. Great sound, excellent clarity and I cannot believe how hard they hit for 8" woofers! Pushing them with a Power T-400-2 and I have had zero problems so far. Rockford Fosgate delivers again!

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Greg Gou

Enfield CT

Overall
Durability
Value
Features
Design
Usability

Decent

March 11, 2013

Great look but you should put in a recommended enclosure. I have it in the ground pounder pre fab box. Its 1.24 cubic feet. Its too much. Sub sounds like its bottoming out or something. I just ordered a Sundown audio e8 instead. Better for deeper bass. P2 is very punchy and resposive though. I have it running of a rockford p300.1 which does 417 watts rms at 2 ohms.

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BassMonster

Enfield CT

Overall
Durability
Value
Features
Design
Usability

Awesome 8

March 2, 2013

I bought 2 for my custom front doors in my 2002 blazer. But i have one hooked up in a ported box in my ext cab s10 on a p300.1. Sounds great for an 8 inch for 70 bucks. Im concerned for the depth of the basket for the doors so i might use the p3 shallows instead for the doors and do a custom box to hold two of the p2s for the s10. I love rockford components and amps. The newer subs not so much. I miss the Hx2s they use to make.

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Sharka

Denver Co

Overall
Durability
Value
Features
Design
Usability

These F'en 8's rock

July 29, 2012

had previously used with Rockford Punch 300x1; Polk 8" JBL 8" Pioneer Flat 8" The Rockford P2D4-8 kills them all... The others did not go as low or as loud, or as well defined for a 8" From an old school car audio designer and this is my own stuff, these 8" do the trick "very well".

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The Bro

Chi Town

Overall
Durability
Value
Features
Design
Usability

Nice little sub

January 30, 2012

I just put one of these in a ported enclosure behind the driver seat of my MR2 and am very satisfied with the results. The rubber surround is very thick and requires a break in period. I am amazed at how low of notes this 8" subwoofer can hit.

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antman

warrenton,nc

Overall
Durability
Value
Features
Design
Usability

p2d48

September 28, 2011

Brought this sub to put in my front doors. Great well made sub and gets low.

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Accessory Tools and Products

Accessories added

8" Pro Single Sealed Square Subwoofer Box

Subwoofer mounting depth: 9.5"

Your Price $49.95

25 ft. of Streetwires 12 Gauge Speaker Cable

You'll need speaker wire to hook up that new subwoofer!

Your Price $44.95

Belva 23 ft. of 12 Gauge Speaker Wire

Ultra-flexible PVC blended jacket for easy installation.

Your Price $14.99

20 Square Feet of Sound Dampening Material

NVX Sound dampening is thicker than competitors, eliminates rattles and gives you bigger bass!

Your Price $59.99

Dynamat Sound Dampening Trunk Kit

Did you know sound dampening will reduce those annoying rattles and even increase your SPL?

Your Price $109.95

Stinger Sound Dampening Trunk Kit

Stinger's Roadkill sound dampening series is sure to kill unwanted road noise and rattles! Enough sound dampening for your whole trunk!

Your Price $69.99

12 oz. Can of Adhesive Spray

Spray adhesive used for adhering carpet to subwoofer boxes without bubbles.

Your Price $6.99

Spring Post Terminal Cup

Makes adding a spring post terminal to an enclosure simple! Banana clip ready!

Your Price $3.99

40" x 15 Ft Piece of Premium Un-Backed Automotive Trim Carpet

Durable design for long life-span, available in many colors and shades.

Your Price $39.99

Gold Plated Dual Terminal Banana Plug Connector

Enables an expandable, secure connection accepting up to 8 gauge wire.

Your Price $3.99

Car Stereo and Speaker Installation Tool Kit

Includes Test Light, Crimp/Splice Tool, Multi-bit Screwdriver and more.

Your Price $12.99

Xscorpion 9-Piece Nylon Plastic Pry and Chisel Tool Set

Easily removes dash/trims, door clips, panels and pins, rubber grommets and vehicle emblems.

Your Price $14.99

Cordless Multi-Functional Heat Tool Soldering Iron Kit

Continuous working lock allows you to work without holding down trigger.

Your Price $79.99

4 Ft of 1/4" Thick Black Heat Shrink Tubing

Provides abrasion resistance and added protection for your cables.

Your Price $3.99

2" Universal, Professional Heavy Duty Roller for Sound Damping/Dampening

Universal rubber roller to make it easy to install sound dampening.

Your Price $7.99

1mm All Purpose Solder

Solder is all purpose for use on most projects where solder is needed.

Your Price $8.99

Scosche SPL Meter

Monitor the noise level of your new car audio system with this SPL meter measuring from 60-135 dB.

Your Price $21.99

AutoSound 2000 CD-101

Low frequency test CD

Your Price $11.99

Impedance Meter / Signal Generator

Easy to locate tuning frequencies of passive radiators and ported enclosures

Your Price $299.99

1 Rockford Fosgate P2D4-8 (Newest Model) Subwoofer

Mono Amp

2 Channel Amp - Bridged

2 Rockford Fosgate P2D4-8 (Newest Model) Subwoofers

Mono Amp

Mono Amp - Option 1

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp - Bridged

3 Rockford Fosgate P2D4-8 (Newest Model) Subwoofers

Mono Amp

4 Channel Amp

4 Rockford Fosgate P2D4-8 (Newest Model) Subwoofers

Mono Amp

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp

Product Summary

Manufacturer

Model Number

P2D4-8

UPC

780687332662

Weight

10.00lbs

Internal SKU

p2d48

Internal Product ID

36285

Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: Rockford Fosgate P2D4-8 (Newest Model)