MB Quart 8" Illuminated Wakeboard Tower Speaker (NT1-120L)

140W 8" 2-Way Nautic Illuminated Wake Tower Marine Speaker - Sold Individually

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NT1-120L: Wake Tower Marine Speaker

NT1-120L Wake Tower Marine Speaker

The IPX67 Rated, Marine Certified Wake Tower Speaker, the NT1-120L, will surely fit any marine application you need. This high-end 6.5" Coaxial Speaker can be mounted to boats, off-road vehicles or other project vehicles you plan on taking out into the elements. It is protected against sun-fade, fresh and salt water spray, dust and sand, and of course water resistant. Not only that, but the sound quality is top notch. The 1" pure titanium dome tweeter reproduces a smooth and musical output even at high volumes. You'll get a pounding mid-range and bass response from the 6.5" woofer. With the NT1-120L, the music won't stop no matter where you take them!

Best Wakeboard Tower Speakers

Sonic Electronix Blog

These were featured as one of our top picks for the Best Wakeboard Tower Speakers of 2016! Check out the blog post to learn more.

General Features:

  • 8" 2-Way Nautic Illuminated Wakeboard Tower Marine Speaker
  • Power Handling:
    • Peak: 140 watts
    • RMS: 70 watts
  • Recommended power range: 20 - 70 watts RMS
  • 1" Pure Titanium Dome Tweeter
  • Water Resistant Composite Polypropylene Cone
  • Temperature Stable Butyl Rubber Surround
  • Woven Red Aramid Fiber Composite Spider
  • High Temperature Copper Voice Coil & Kapton Former
  • High energy Strontium Ferrite Magnet
  • Conformal Coated, Butterworth 12dB per octave crossover with Positive Thermal Coefficient Tweeter Protection
  • Heavy Duty ABS Cast Enclosure
  • Steel Reinforced Hardware Included
    • Eleven Mounting Hardware Options From 1.5" to 2.75" Included
  • Built-In Illumination
    • Color on/off, Strobe and Programmed "light shows"
    • Optional MB Quart N1-RC required for control of lighting systems and to sync multiple illuminated speakers
  • Frequency Response +/- 10dB : 25 - 22,000 Hz
  • Frequency Response +/- 3dB: 55 - 20,000 Hz
  • Sensitivity: 92 dB
  • Dimensions: 11.20" L x 8.40" W x 8.40" H / 9.035" Hang Height
  • Also available in Black: NT1-120LB
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Priced Individually

Tower Speakers Specifications

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.
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 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.
Butyl Rubber
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.
140 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.
70 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".
92 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).
25 - 22,000 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
Minimum Pole Mounting Diameter
When mounting a marine tower speaker to a pole, this is the minimum diameter that the pole can be.
Maximum Pole Mounting Diameter
When mounting a marine tower speaker to a pole, this is the maximum diameter that the pole can be.
Tower Mounting Brackets
This will indicate whether the item is compatible with mounting brackets and whether they are included in the initial purchase. Mounting brackets are typically used in attaching the speaker to a tower, however some mounting brackets allow the speaker to be attached to the deck of the boat.
Yes (Included)
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.

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
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1 Star

Average Attribution Rating


Owens Cross Roads, AL

Very Nice

August 20, 2015

Fast Service and very nice product ease of use and setup.

12 of 15 found this helpful

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Accessory Tools and Products

Accessories added


50 ft. of True Spec 16 Gauge EnvyFlex Speaker Wire

Your Price $19.99

NVX XWS16100

100 ft. of True Spec 16 Gauge EnvyFlex Speaker Wire

Your Price $29.99

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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 8" Illuminated Wakeboard Tower Speaker (NT1-120L)

  • MB Quart Nautic Marine Wake Tower Speakers | Product Overview
  • MB Quart Speaker Lighting Effects
  • MB Quart Marine and Powersports Speakers and Wake Tower Speakers - Illumination

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MB Quart 8" Illuminated Wakeboard Tower Speaker (NT1-120L)

140W 8" 2-Way Nautic Illuminated Wake Tower Marine Speaker - Sold Individually


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