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MB Quart ONX 157 + NVX Sound Dampening

5" x 7" / 6" x 8" ONYX Series 2-Way Speakers with Included Sound Dampening!

We apologize

This item has been discontinued

Why Sound Dampening?

The MB Quart ONX 157 speakers along with the NVX SDSK2 Sound Dampening is a great package that can help improve the sound quality from the speakers as well as overall output. Not only will the Dampening benefit your speakers, but you can also benefit your entire vehicle and it's overall road noise isolation. Adding Sound Dampening can help make your car quieter and more comfortable while improving the sound quality.

MB Quart ONX157

5" x 7" / 6" x 8" ONYX Series 2-way Coaxial Speaker System
Quantity: 1

General Features:
  • 5" x 7" / 6" x 8" Onyx Series Coaxial Speakers
  • Power Handling:
    • Peak: 240 watts per pair / 120 watts each
    • RMS: 100 watts per pair / 50 watts each
  • Gloss piano black polypropylene cone for accurate sound reproduction
  • Rubber surround adds durability and more linear movement
  • 30mm WideSphere titanium dome tweeters
  • Rugged stamped steel basket complements speaker design
  • Impedance: 4 Ohms
  • Sensitivity: 90 dB
  • Frequency Response: 40 - 32,000 Hz
  • 4 ohms impedance
  • Large magnet structure
  • Includes mounting grille and hardware
  • Authorized Internet Dealer
  • 1-year Manufacturer's warranty

Priced Per Pair


Versa Kit - 4 Square Feet of Sound Dampening Material (One 18" x 32" Piece)
Quantity: 1

Product Features

  • One 18" x 32" Piece of Sound Dampening Material
  • 4 Square feet total
  • Made from 100% Butyl Rubber
  • Eliminates road noise
  • Quiets vibrations
  • Increases sound quality and output of car audio system
  • Stops rattles
  • Increases SPL
  • Reduces heat
  • Easy to form aluminum conforms to desired area of vehicle with ease
  • Four step peel and stick design for easy installation
  • Up to 30% thicker than the leading competitors
  • Dimensions: 18"L x 32"W
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty
4 ft.2
4 ft.2
4 ft.2
4 ft.2
4 ft.2
1.7 mm
2.0 mm
2.3 mm
2.1 mm
2.2 mm

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
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1 Star

Average Attribution Rating


Accessory Tools and Products

Accessories added

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

Car Stereo and Speaker Installation Tool Kit

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

Your Price $12.99

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

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

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 $21.99

NVX SDRLR1 Sound Dampening Rubber Roller

Install your Sound Dampening with ease! This heavy duty rubber roller is designed specifically to install your NVX products!

Your Price $7.99

Items we think you might want

ONX157 thumbnail

MB Quart ONX157

• RMS: 100 watts Per Pair / 50 watts Each
• Gloss Piano Black Polypropylene Cone
• 30mm WideSphere Titanium Dome Tweeter

Your Price $44.99

Product Summary


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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: MB Quart ONX 157 + NVX Sound Dampening