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MB Quart NH1-120B

Nautic Series 8" compression horn speakers

Item # 049NH1120B

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Discontinued item

Item # 049NH1120B

About the MB Quart NH1-120B

Massive sound and marine toughness

MB Quart's NH1-120B 8" marine speakers bring awesome power and audio performance onboard your boat. The compression horn design delivers massive sound and outstanding fidelity, while water-resistant components and composite baskets, magnet covers and grilles help ensure that the party will go on for seasons to come.

Compression horn design

Compression horn designs dramatically improve speaker efficiency. And this is the fun kind of efficiency – it means it takes less amp power to produce more usable volume throughout the frequency spectrum. In other words, you can crank these speakers up and hear it all – highs, lows, and mids.

Quality components for impressive performance

The 1" titanium diaphragm, polypropylene woofer cone, and built-in compression horn give you smooth response and seriously impressive volume. The speaker is vented front and rear, so air passes through the spider and the back plate to whisk away heat from the voice coil. As a result, it stays cool when pushed hard. The built-in crossover guarantees a smooth transition between high and low frequencies – not irritating distortion.

Built tough to rock hard

The exterior surfaces are UV-resistant and ready to withstand broiling sunlight, while the heavy-duty (but light weight) ABS frame will handle hard knocks and also produce better bass. Inside, the crossover network is conformal-coated to protect against fresh and salt water spray. In fact, the NH1-120B is IPX67-rated, which means it meets the highest standards of weather resistance.

More about MB Quart

Three decades of marine and powersports audio expertise goes into MB Quart audio gear. Their high-quality receivers, speakers, amps, and subs provide great sound and rugged, all-weather reliability. The MB Quart "Life Shield" badge means your gear has been designed and tested to stand up to the toughest conditions on the water or off the beaten path.

Product highlights:

  • 8" compression horn marine speaker (pair)
  • designed for marine use
  • coincident-mounted compression horn with 1" titanium diaphragm
  • polypropylene woofer with butyl rubber surround
Marine Features:
  • water-resistant aramid fiber spider
  • front and rear cooling system
  • IPX67 certified for marine use
  • UV- and salt water-resistant
  • handles up to 90 watts RMS (180 watts peak power)
  • frequency response: 20-24,000 Hz
  • impedance: 4 ohms
  • sensitivity: 92 dB
  • cut out diameter: 7"
  • mounting depth: 3-3/4"
  • warranty: 1 year
  • Our 60-day money-back guarantee
  • MFR # NH1-120B

What's in the box:

  • Two 2-way marine speakers
  • Quick start installation guide
  • Specifications printed on the box

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More details on the MB Quart NH1-120B

Features & specs

Speaker Size 8
Design 2-way
Tweeter Design 1" Compression Diaphragm
Tweeter Composition Titanium
Woofer Composition Polypropylene
Woofer Surround Butyl Rubber
Parts Warranty 1 Year
Labor Warranty 1 Year
Sensitivity 92 dB at 1 watt
Frequency Response 20 - 24k Hz
Max RMS Power Handling 90
Peak Power Handling (Watts) 180
Impedance (Ohms) 4
Top-mount Depth (Inches) 3 15/16
Bottom-mount Depth (Inches) N/A
Cutout Diameter or Length (inches) 7 1/16

Product Research


Coincident Mounted Compression Horn: In addition to increasing efficiency, the coincidentally mounted woofer and tweeter create a single point source with a unified magnetic structure, allowing all musical energy across the frequency band to come from a single focal point within the transducer. This improves the directionality of the speaker system.

Wavelength Transparent Acoustic Lens: The size and spacing of the perforations in the waveguide (part of the grille) are engineered to allow midrange frequencies to pass through, while remaining firm to guide the high frequency waves from the compression driver, to improve SPL and the sound stage. This technology also eliminates shadowing, which can occur with high SPL standard cones.

Grilles: Each grille is held in place by four screws, and while they can be removed, the acoustic lens is removed at the same time, altering the sound output. Thus the grilles should not be removed.

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