Garage
Shop

See all parts that fit your 2024 SQ8 e-tron

NVX NE81P w/ Rockford Fosgate Punch P3 P3SD4-8

Single 8" Slot Ported 3/4" MDF Black Carpeted Subwoofer Enclosure – 0.75 Cu. Ft. with Polyfil and NVX Logo w/ 8" Punch Series Dual 4-ohm Shallow Car Subwoofer

NVX
Shop all NVX
Limited time!
highlight-star-icon

• 8" Single Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Internal box volume: .75 cubic feet
• Premium Black Carpet with Black NVX Logo

Learn more about the ne81p_p3sd48
Universal fit Icon

Universal – fits most vehicles.

Similar items | Update vehicle | Vehicle store
2026-07-27 11:08:20
List price $289.98
Thanks , You Pay:
-17%

$239.98

 with warranty
Starting at $22/mo or 4 payments of $60 Buy now, pay later and installment payment plans are offered by Afterpay and Affirm. Learn more

Heads up

Your vehicle can use this product in multiple locations. Only a quantity of one can be selected from the product page. You will have the option to adjust the quantity within your cart.

Purchase $400 or More of NVX and Save 15%!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
Quantity
In Stock
Brand new

Buy it now


Acima Logo

No Credit Option

Flexible Lease Payments

Early Purchase Options

Quick Approval Decision

Extend logo

Keep your product protected longer! Extend the warranty after the manufacturer warranty expires. 

  • Hassle-free immediate replacement within minutes!
  • Easy online claims 24/7
  • Covers product breakdowns and failures
Swoosh Icon Icon of Swoosh

For over 25 years, we've been your X-Factor – the team dedicated to having the biggest impact on your shopping experience!

Award winning icon
Award-Winning Service
Shipping icon
FREE Shipping Orders $49+
60 days return policy icon
60-Day Easy Returns
lowest price guarantee icon
Guaranteed Lowest Price
inHouseExpert
In-House Experts
NVX - Worth the Envy - Direct to Consumer Car Audio

Loading...
Limited time!
46CSC654 main

Kicker CSC65 (46CSC654)

600W Peak (200W RMS) 6.5” CS Series 2 Way Coaxial 4-ohm Speakers

254
-33.36%

$79.96

List price $119.99

Limited time!
Club 622 main

JBL Club 622

360W Peak (120W RMS) 6.5" Club Series 2-way Coaxial 3-ohm Speakers

5
-28.58%

$99.95

List price $139.95

DB652 main

Polk Audio DB652 (DB 652)

600W Peak (200W RMS) 6.5" DB+ Series 2 Way Coaxial 4-ohm Car, Marine and Powersports Speakers

214
-9.16%

$109.00

List price $119.99

43DSC6504 main

Kicker DSC650 (43DSC6504)

480W Peak (120W RMS) 6.5” DS Series 2-way 4-ohm Coaxial Car Speakers (DSC6504)

72
-10.53%

$84.99

List price $94.99

Club 322F main

JBL Club 322F (SPKCB322FAM)

150W Peak (50W RMS) 3.5" Club Series 2 Way Coaxial 3-ohm Speakers

1
-27.29%

$79.95

List price $109.95

REF6532IXAM main

Infinity Reference REF6532IXAM

360W Peak (120W RMS) 6.5" Reference Series 2 Way Coaxial 3-ohm Speakers

22
-20.01%

$119.95

List price $149.95

XED62 main

Cerwin-Vega XED62

600W Peak (70W RMS) 6.5" XED Series 2-Way Coaxial 4-ohm Speakers

15
-16.67%

$49.99

List price $59.99

GX608C main

JBL GX608C (GX608CAM)

420W Peak (140W RMS) 6.5” GX Series 2 Way 2.3-ohm Component Speaker System

7
NSP65 main

NVX NSP65

540W Peak (180W RMS) 6.5" N-Series 2 Way Coaxial Car Speakers

93
-35.19%

$69.99

List price $107.99

PNW-65CS2 main

AudioControl PNW-65CS2

250W Peak (200W RMS) 6.5″ PNW Series 2 Way Component 3-ohm Speakers

4
-5.90%

$319.00

List price $339.00

Description


NVX brand icon

Authorized dealer

NVX NE81P

Single 8" Slot Ported 3/4" MDF Black Carpeted Subwoofer Enclosure – 0.75 Cu. Ft. with Polyfil and NVX Logo
Quantity: 1

Product Details:

  • Not compatible with NVX VC-Series Subwoofers
  • 8" Single Ported Subwoofer Enclosure
  • Made from 3/4" Medium Density Fiberboard (MDF) construction
  • Built with precision CNC technology for exceptional accuracy
  • Pre-lined with Poly-Fil for improved acoustic response
  • Premium Black Carpet with Black NVX Logo
  • Spring Loaded Push Terminals
  • Maximum subwoofer mounting depth: 8-5/8"
  • Subwoofer cutout diameter: 7-3/8"
  • Internal box volume: .75 cubic feet
  • Port Tuning Frequency (Fb): 38 Hz
  • Dimensions: 15.25" D x 15.00" W x 11.50" H
  • Authorized Internet Dealer
  • 1-year Sonic Electronix Warranty

Port Specifications:

  • Tuning Frequency: 38 Hz
  • Port Width: 1"
  • Port Height: 10"
  • Port Length: 21"

Rockford Fosgate Punch P3 P3SD4-8

300W Peak (150W RMS) 8" Punch Series Dual 4-ohm Shallow Car Subwoofer
Quantity: 1

Product Details:

  • 8" Dual 4 ohm Punch Series Subwoofer
  • Power Handling:
    • Peak: 300 watts
    • RMS: 150 watts
  • Anodized Aluminum Cone
  • M-Roll Santoprene Surround
  • Shallow Motor Assembly
  • Dual linear spider with embedded 16 AWG tinsel leads
  • Diamond cut cast aluminum trim ring
  • StampCast basket with integrated spider venting
  • Optimized for both sealed and vented enclosures
  • 2" High Temperature Voice coil
  • 8.5 mm Xmax
  • 37.5 oz. Double Stacked magnet motor structure
  • Frequency Response: 38 - 250 Hz
  • Resonance Frequency (Fs): 39 Hz
  • Sensitivity: 82 dB
  • Recommended sealed box volume: 0.25 cubic feet
  • Recommended ported box volume: 0.75 cubic feet
  • Top-mount depth: 2.66"
  • Cutout diameter: 7.13"
  • CTA-2031 Compliant
  • Authorized Internet Dealer
  • Optional protective subwoofer grille (sold separately) Rockford Fosgate P3SG-8
  • 1-year Manufacturer's Warranty

  • Priced Individually


Best selling similar products

CP210-W0v3 small

JL Audio BassWedge CP210-W0v3

•Dual 10" 10W0v3-4 Loaded Ported Enclosure
• 1200W Peak
• 600W RMS
• Top-Quality MDF Construction
• Durable Dark Gray Carpet Finish
• Five-Way Binding Post Connectors
• Embroidered JL Audio Logo

(9)

$274.99

List price $349.99

DL7R122 small

Kicker DL7R122 (45DL7R122)

• Ported enclosure with 2 12" Solo-Baric L7R Series Subwoofer
• 1200 watts RMS (2400 watts Peak)
• Final Impedance: 2-ohm
• Dimensions: 33-3/4" L x 15-7/8" H x 15-1/4" W x 20-3/8" W2

(8)

$519.96

List price $699.99

47QL7R122 small

Kicker 47QL7R122

• Ported enclosure with 4 12" Solo-Baric L7R Series Subwoofer
• 2400 watts RMS (4800 watts Peak)
• Final Impedance: 2-ohm
• Dimensions: 28" L x 20-1/4" H x 35-7/8" W

(2)

$1199.96

List price $1599.99

JBLBassPro 12 small

JBL BassPro 12

• 12" Amplified Loaded Subwoofer System
• 150 watts RMS
• Built-In Class D Amplifier
• Variable Bass Boost
• Speaker-Level Inputs

(1)

$364.95

List price $419.95

CP110-W0v3 small

JL Audio BassWedge CP110-W0v3

• 600W Peak
• 300W RMS
• Top-Quality MDF Construction
• Durable Dark Gray Carpet Finish
• Five-Way Binding Post Connectors
• Embroidered JL Audio Logo

(12)

$179.99

List price $229.99

CP212-W0v3 small

JL Audio CP212-W0v3

• Dual 12" 12W0v3-4 Loaded Ported Enclosure
• 1200W Peak
• 600W RMS
• Top-Quality MDF Construction
• Durable Dark Gray Carpet Finish
• Five-Way Binding Post Connectors
• Embroidered JL Audio Logo

(14)

$349.99

List price $449.99

P1-2X12 small

Rockford Fosgate Punch P1-2X12

• Two 12" Punch Series Stage 1 Subwoofers
• Kevlar Reinforced Paper Cone
• Tear and Fatigue Resistant
• Proprietary Spider Venting/Cooling Technique
• Solid 5/8" MDF Construction

(17)

$439.99

List price $489.99

CP112-W0v3 small

JL Audio BassWedge CP112-W0v3

• 600W Peak
• 300W RMS
• Top-Quality MDF Construction
• Durable Dark Gray Carpet Finish
• Five-Way Binding Post Connectors
• Embroidered JL Audio Logo

(13)

$229.99

List price $279.99

DL7S122 small

Kicker DL7S122 (44DL7S122)

• Ported enclosure with 2 12" Solo-Baric L7S Series Subwoofer
• 1500 watts RMS (3000 watts Peak)
• Final Impedance: 2-ohm
• Dimensions: 33-3/4" L x 16" H x 16-1/4" W x 19-1/2" W2

(14)

$849.99

List price $949.99

VL7S122 small

Kicker VL7S122 (44VL7S122)

• Ported enclosure with 1 12" Solo-Baric L7S Series Subwoofer
• 750 watts RMS (1500 watts Peak)
• Final Impedance: 2-ohm
• Dimensions: 18-3/4" L x 16" H x 14-3/4" W x 17-7/8" W2

(10)

$499.99

List price $549.99

Specifications & Details


Subwoofer Specifications
Series
Punch Series
Subwoofer Size
8"
RMS Power Handling
150 watts
Peak Power Handling
300 watts
Woofer Composition
Anodized Aluminum
Woofer Surround
M-Roll Santoprene
Sensitivity
82 dB
Frequency Response
38 - 250 Hz
Subwoofer Design
Round / Circle
Enclosure Specifications
Box Type
Ported
Number of Subwoofers
1
Box Style/Shape
Square/Rectangle
Wood Thickness
3/4"
Number of Terminals
1
Terminal Type
Binding posts (banana clip ready)
Box Exterior Color
Black
Box Finish
Carpet
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Sonic Electronix

Item Details


Manufacturer:

NVX

Model Number:

NE81P_P3SD48

Weight:

35.00lbs

Internal SKU:

ne81p_p3sd48

Internal Product ID:

228982

Customer Ratings & Reviews


NVX NE81P w/ Rockford Fosgate Punch P3 P3SD4-8 thumbnail image

5 star
71%
4 star
14%
3 star
14%
2 star
0%
1 star
0%



Durability
4
Value
4.8
Features
3.8
Design
4.8
Usability
4.5

Customer Photos & Videos


Customer Reviews

Sort by:

Loading...

2012 dodge ram 1500 w/alpine system

The following review is for P3SD4-8, which is a part of the bundle you are viewing.

replaced factory sub with this RF sub in original factory plastic box and not much of a difference but you do hear more punch to it than the factory one. Powered by an alpine MRP-F300 is too much power for the RF sub , it starts to pop. Gain has to be set all the way down. Im going to power the sub with factory amp and use the alpine 4 channel amp to power all 4 door speakers see the results. Great sub though!

By Omar on May 24, 2013

69 found this helpful


Tight Little Sub

The following review is for P3SD4-8, which is a part of the bundle you are viewing.

I bought this sub to compliment my 6.5" comps up front in a big ole Tundra. I have 75 watts to the front stage and 250@ 2ohms to the sub in a sealed box. It's a perfect match. Nice full clean sound throughout the vehicle. I know 250watts is a bit high for this speaker,but it's in a sealed box and I listen to heavy music mostly, it handles it just fine. It feels great in your hands, solid construct. Very happy!!!!!

By CFuzz on September 5, 2013

60 found this helpful


Not a bad sub

The following review is for P3SD4-8, which is a part of the bundle you are viewing.

I have not had a sub any smaller than a 12" in the past, so I do not have a frame of reference for output of these subs. I have also never owned a Rockford Fosgate product. With all of that being said, I was very pleased right out of the box with the styling and sturdiness of the construction of the product. The dual voice coils provide a lot of flexibility with the wiring. I have two of these subs in a 0.45 sq ft enclosure with polyfil wired at a 4 ohm load and 150W per sub. They are not overpowering but are doing well so far.

By Eric on January 2, 2017

37 found this helpful


The following review is for P3SD4-8, which is a part of the bundle you are viewing.
By Charles on October 27, 2024 Checkmark Icon Verified purchase

4 found this helpful


The following review is for NE81P, which is a part of the bundle you are viewing.
By Eliseo on June 23, 2026 Checkmark Icon Verified purchase


Looks good, sounds good at a good price

The following review is for NE81P, which is a part of the bundle you are viewing.

I'm not an expert, but this enclosure impressed me.
Nice, black carpeting... Lettering is matte black, not blue like the online pictures... Which is better IMO. Enclosure has some weight to it, which makes it feel heavy duty.
This enclosure was the perfect volume size for my P3 subwoofer, and it sounds great.
If I could improve on this box, I would say the terminals could have been installed more straight instead of at an angle. It also could've been installed more toward the bottom. But those are minor gripes. I'm happy with this box and what I paid for it.

By Lee on June 16, 2026 Checkmark Icon Verified purchase


The following review is for NE81P, which is a part of the bundle you are viewing.
By Abram on May 21, 2026 Checkmark Icon Verified purchase
2017 Jeep Renegade




PGR12RC-1 small

Alphasonik PGR12RC-1 (1 Grill from 2-Pack PGR12RC)

$19.99

List price $29.99

03-08-honda-pilot-fdspkg small

NVX Front N-Series Speaker Upgrade Kit for 2003-2008 Honda Pilot

Pair of 6.5" NVX N-Series Speaker Upgrade Kit with Metra Harnesses | Fits select 2003-2008 Pilot

(93)

$77.98

List price $120.98

CX1200.1_SonicElectronix-25-Gift-Card small

Kicker CX1200.1 (12CX1200.1) + Free $25 Sonic Electronix Gift Card

1200W RMS, Class D Mono Block CX Series Car Amplifier + Free $25 Sonic Electronix Gift Card

(21)

$289.95

List price $424.95

NE81P_UV18D4 small

NVX NE81P w/Sundown Audio U-8 D4 8" (U8D4)

Single 8" Slot Ported 3/4" MDF Black Carpeted Subwoofer Enclosure – 0.75 Cu. Ft. with Polyfil and NVX Logo w/600W RMS 8" U Series Dual 2-ohm Car Subwoofer

(3)

$409.98

List price $509.98

XQA25001_XKIT02 small

NVX XQA25001 with NVX 1/0 Gauge Amp Kit

2500W RMS XQ-Series SQ Class D Strappable 1-Ohm Stable Monoblock Amplifier with X-Boost

(43)

$499.99

List price $1067.98

NTV-KIT605 small

NAV-TV NNG-Toyota 4s Navigation (NTV-KIT605)

Kit Interfaces Nav N GO Powered Navigation System Into Select Toyota OEM Media Systems

$1199.00

List price $1499.99

Save up to 10 different vehicles in your garage
Vehicle
Store
Delete

2024 Audi SQ8 e-tron

2019 Audi Q8

1985 Toyota 4Runner

2009 Pontiac G6

2008 Mazda B4000

2003 Audi A6

2014 Chevrolet Corvette

2009 Toyota FJ Cruiser

2006 Cadillac STS

2024 Audi e-tron GT

Vehicle
Store
Delete

2007 Harley Davidson FXST/I Softail Standard

Vehicle
Store
Delete

2017 Can-Am Commander 800R DPS

Add vehicle Clear all vehicles
Where to find vehicle info
Are you sure you want to clear your garage?
This action cannot be undone. Confirm
This page was not designed for products.
If you continue, you will be redirected to a category customized for your vehicle. Continue
Loading...
Identify your vehicle and submodel details
  • Owner's manual
  • Vehicle's insurance card
  • Vehicle registration
  • Vehicle produced after 2005: Inside driver's side door
  • Vehicle produced before 2005: Rear passenger doorjamb, glove box, center console, or engine compartment
Car Info Side Door Icon
Vehicle Registration Icon
Vehicle Insurance Icon

Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

  • You see only parts engineered for your exact vehicle
  • You avoid incompatible radios, speakers, or wiring
  • Installation is smoother, faster, and frustration-free
  • You get the correct accessories the first time

Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.