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4 Speakers Total: 2 Pairs of NVX N-Series NSP68 Coaxial Speakers

6" x 8" 2-Way NVX N-Series Coaxial Car Speaker Package

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List price $239.98

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4 Speakers Total: 2 Pairs of NVX N-Series NSP68 Coaxial Speakers

6" x 8" 2-Way NVX N-Series Coaxial Car Speaker Package


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Car Stereo and Speaker Installation Tool Kit

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NVX SDSK2 Speaker Kit

Eliminates speaker panel distortion and reduces vibration, rattles, and squeaks!



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NVX Store

Redefining “Entry Level”

Don’t just replace your speakers – upgrade them! NVX set out to build an affordable speaker solution for audio enthusiasts on a budget; although priced to compete with other “entry level” speakers on the market, the N-Series offer sound quality and reliability which blows the competition out of the water. The materials and designs used in the N-Series were carefully selected to provide the best possible performance. Treble is reproduced with stunning warmth and smoothness thanks to the 20mm real silk dome tweeter, a characteristic usually reserved for premium component systems. The light yet sturdy polypropylene woofer cone produces accurate midbass with a punch. The speaker utilizes an integrated filter network, which makes installing these speakers as simple as connecting the wires and mounting them to the door. The NSP68 is the 6”x8” coaxial – the N-Series is also available in 4”x6” and 6”x9” oval models, and 3-1/2”, 4”, 5-1/4” and 6-1/2" round models.

So if you’re in the market for a speaker that’s more about thrills than frills, look no further than the N-Series from NVX!

General Features:

  • 4 Speakers Total! 2 Sets of 6" x 8" N-Series 2-Way Car Speakers
  • Power Handling:
    • Peak: 320W Total (160 watts per pair / 80 watts each)
    • RMS: 160W Total (80 watts per pair / 40 watts each)
  • Polypropylene cone material is strong, yet lightweight for accurate mid and low tone
  • Nitrile Butadiene Rubber Surround supports smooth, linear movement for optimal accuracy
  • 20mm Silk Dome Tweeter delivers rich, warm treble with remarkable clarity and definition
  • High Temperature KSV Voice Coil provides superior current distribution with effective heat dissipation
  • Y30 Ferrite Magnet motor structure maintains control of the driver for tight, crisp sound reproduction
  • Stamped Steel Basket Provides a sturdy foundation for a durable and long-lasting speaker
  • 4 ohms impedance
  • CEA-2031 compliant speakers
  • Frequency response: 70-20,000 Hz
  • Top-mount depth: 2-5/8"
  • Sensitivity: 88dB
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Combo Includes 4 NSP68 Speakers

Speaker Specifications

This is the manufacturer product line of speakers.
N-Series (NVX)
Priced Per
Car Speakers are typically sold in pairs so you will receive 2 speakers for each speaker purchase on speakers marked "Priced Per Pair". If a speaker is marked "Priced Per Each" then the speaker is sold individually and each purchase you make will result in 1 speaker. High-powered tweeters, midrange and full-range pro audio for car speakers are typically sold per each speaker.
2 Pairs (4 Speakers)
Speaker Size
Refers to the size of the speaker measured in inches. Every vehicle has standard application sizes. Please use our vehicle fitment guide for your vehicle's specific speaker sizes if you do not know them.
6" x 8"
The number of individual drivers in a car speaker. Speakers with 2 drivers are known as a 2-way, and 3 drivers are known as a 3-way. Component systems are often referred to as "separates" because the tweeter is not attached to the midwoofer (main speaker driver) and mounts separately in a location such as a door post. Component systems typically come with an external crossover so you can easily adjust the high and low frequencies sent to both the midwoofer and the tweeter. Center channel speakers are great for those looking to have surround sound in their vehicle.
Tweeter Design
Designs such as cone, dome, semi-dome, balanced dome, and whizzer are most popular. Cone tweeters are simple, efficient and typically are the most reasonably priced. Dome tweeters are used in most home speakers, and provide a smoother and more accurate sound. Semi-dome design is one with a dome placed inside a cone. A Balanced dome driver is a semi-dome with equal reproduction area given the cone and dome portions of the driver. A whizzer tweeter is a separate tweeter cone driven by the voice coil of the woofer.
Tweeter Size
Refers to the size of the tweeter. Typically, smaller tweeters produces less output with higher frequency response.
Tweeter Composition
Materials such as polypropylene, silk, cloth, and paper are the most common, where as many more recent tweeters are now manufactured with composites such as Aluminum, Titanium, Mylar, and other materials.

PEI is an acronym for "Polyetherimide" which is an amorphous, amber transparent, high-performance thermoplastic.

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.
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.
Nitrile Butadiene Rubber (NBR)
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.
320 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.
160 watts
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".
88 dB
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).
70 - 20000 Hz
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
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.

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.
Cutout Dimensions
Refers to the dimensions of the hole, measured in inches or millimeters, required to contain the speaker.
5-3/16" x 7-3/8" 
Speaker Grilles
A grating or screen of metal or plastic bars or wires, mounted in front of a speaker as protection. If yes, the speakers will include matching speaker grilles. If no, there are no grilles included.
Number of Speakers
This is the number of speaker that is included in the package. Each purchase will result in receiving the number of speakers indicated here. Please note that some items will have multiple woofers in the same enclosure. For sets of component speakers, this number will refer to the number of sets of speakers (For example, 2 would indicate the purchase includes 2 woofers and 2 tweeters).

Please refer to the product image and description for further details about the speaker.

Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
4 Star
3 Star
2 Star
1 Star

Average Attribution Rating


Lincoln, NE

Serious bang for the buck.

May 27, 2015

I'd buy these again. Most definitely. When you get them, give them a couple weeks to break in, and you'll be happy. THINGS NOT TO DO: Don't expect four, or even 16 of these to produce bass that makes your windows shake. They will, however, produce bass that you can hear, particularly at sustainable volume levels. They are surprisingly even-toned. I'm sure there's better stuff on the market, but for under $100, you're not putting four better speakers in an F-150, or whatever else four 6x8s fit in. I really don't have a bad thing to say about them, hence the rating.

23 of 46 found this helpful

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Van Nuys, CA

Love NVX

January 27, 2015

This is my new favorite brand. I had thes speakers installed in my f150 and they sound great. I love NVX because no matter what product you purchase, you get so much bang for your bucks.

34 of 76 found this helpful

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Accessory Tools and Products

Accessories added

Streetwires 25 ft. of True Spec 12 Gauge Speaker Wire

You need speaker wire to connect your speakers!

Your Price $44.95

Belva 23 ft. of True Spec 12 Gauge Speaker Wire

100% Copper Clad Aluminum, high strand count with ultra-flexible PVC blended jacket for easy installation

Your Price $14.99

Car Stereo and Speaker Installation Tool Kit

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

Your Price $16.99

NVX XTGSP2 Tone Generator and Speaker Polarity Tester

Perfect for safely troubleshooting and testing audio systems

Your Price $29.99

Belva Five Piece Installer's Panel Removal Tool Kit

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

Your Price $11.99

Xscorpion WDCR2 Window and Door Clip Remover

Removes and installs handle and window crank clips.

Your Price $6.99

3 in 1 Wire Quick Splice T-Tap and Butt Connector Crimper + Wire Cutter

Used for cutting copper and aluminum wires up to 8 gauge.

Your Price $29.99

Universal Wire Puller & Grabber

Running wires has never been easier! This wire puller allows you to run wires through those hard to reach places!

Your Price $6.99

Encore Universal Door Lock/Unlock Actuator

Add Power Door Locking and Unlocking while you have the Door Panels removed

Your Price $4.99

Encore Universal Four Door Power Door Lock Kit

Add Power Door Locking and Unlocking while you have the Door Panels removed

Your Price $29.99

NVX SDSK2 Speaker Kit

Eliminates speaker panel distortion and reduces vibration, rattles, and squeaks!

Your Price $14.99

Stinger Roadkill Speaker Kit

Use this to eliminate rattle from your speakers!

Your Price $13.99

NVX Sound Dampening Rubber Roller

Install your Sound Dampening with ease using this heavy duty rubber roller!

Your Price $7.99

12-10 AWG Butt Connectors

These yellow butt connectors are ideal when connecting thicker speaker wire your new aftermarket speakers.

Your Price $5.99

12-10 AWG Yellow T-Tap Adapters

Allows for fast and easy splicing of wires by easily tapping into the cable.

Your Price $4.49

12-10 AWG Quick Disconnect Connectors

These yellow quick disconnect connectors make it easy to connect and disconnect speaker wire your to your new aftermarket speakers!

Your Price $6.99

Browse 4 questions and 44 answers
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Why did you choose this?
Sonic Electronix Store
Great sound at a good price...
jonathan a on Sep 25, 2015
NVX is an awesome brand and I want to promote them
Rickey P on Aug 14, 2015
Great reviews
Nicholas M on Aug 28, 2015
They seem to be a good fit for a non amplified setup in my ford.
Samuel F on Jul 15, 2015
A shopper on May 27, 2015
Best Answer: So, here's my take. The short answer is these are great speakers for the money. Are there "better" speakers? Most definitely. Are you going to care? Really probably not. Here's why.

When I first got them and started using them, I thought they sounded a little brassy. What it was, though, was two-fold. First, my ears were used to the ones that came in my truck from the factory back in '01. The second is that they hadn't broken in yet.

After using them for some months, I love them. They're really natural-sounding. Bass is completely respectable considering they're being driven by the Alpine I bought at the same time. That thing is a POS, but I've reviewed it accordingly on it's page.

There are times I'd like it to be a little brighter, but that's the stock speaker placement's fault. Not these things.

The point is, I'd buy them again in a second. I'm actually going to buy some of this type for my beater car, too, I like them so much.

Don't get your expectations too high, and you'll be fine. Don't expect them to perform a subwoofer's job entirely, and feed them plenty of deck power, and they'll be good.
Reply · Report · Eric S on May 27, 2015
· Add Answer · I Have This Question Too (0)
Does it come with connections or will I have to buy wire and connectors?
Nick M on Aug 26, 2015
Best Answer: No, but it doesn't matter because you car probably has proprietary connectors anyway.. I took the connectors off the old speakers and mounted them on the new ones with no problem.
Reply · Report · Tom B on Aug 27, 2015
· Add Answer · I Have This Question Too (0)
What would be a good amp to power all 4 of these?
Michael B on Jul 5, 2015
Reply · Report · steven w on Jul 5, 2015
· Add Answer · I Have This Question Too (0)

Product Summary


Model Number

NSP68 (Pair)



Internal SKU


Internal Product ID


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: 4 Speakers Total: 2 Pairs of NVX N-Series NSP68 Coaxial Speakers