MB Quart NF1-116B 6.5ft Marine 2-Way Coaxial Speakers - Weather Tough

In this review of the MB Quart NF1-116B 6.5' marine coaxial speakers, the bottom line is simple: these are a solid, weather-resistant choice for boat owners who want clear high-frequency detail and dependable midrange without forcing a large amplifier. The pair brings an 80 watt peak rating with a 3/4' composite dome tweeter that delivers a smooth, musical top end, while the water-resistant polypropylene woofer and UV butyl surround stand up to salt and sun. For anyone fitting speakers into shallow mounts on a boat or dock, this review finds they balance musicality and durability well.

Key Features

• Composite dome tweeter: the 3/4' composite dome provides very smooth, musical high frequencies with good output from modest amplifier power.
• Water-resistant woofer: the 6.5' polypropylene cone with UV butyl surround resists salt and UV exposure while keeping midrange clarity.
• Shallow-mount design: a 2-3/8' mounting depth makes installation possible in tight dash or enclosure locations common on boats.
• High temperature voice coil: the copper voice coil on an aluminum former handles power efficiently while remaining lightweight for improved transient response.
• Durable spider and frame: an aramid fiber spider and lightweight composite frame stabilize the cone and resist marine conditions for longer life.

Who It's For

The MB Quart NF1-116B is aimed at boat owners and marine audio installers who need a dependable, two-way coaxial speaker for on-deck listening, wake towers, or compact salon spaces. It fits owners who value clear highs and a musical midrange without adding heavy amplification, and those who need UV- and salt-resistant components.

Those seeking deep, loud bass from a small coaxial will want to pair these with a dedicated subwoofer or choose larger component woofers; similarly, if you require full-range high-SPL competition audio, there are bigger speaker systems designed specifically for that purpose.

Pros & Cons

Pros

• Weather-resistant construction including UV butyl surround and salt-resistant materials for long marine life.
• Smooth composite dome tweeter gives clear, musical highs without harshness.
• Shallow mounting depth and included hardware simplify retrofit installations in confined spaces.
• High temperature voice coil and aluminum former improve power handling relative to size.

Cons

• As a 6.5' coaxial, low-bass output is limited compared with larger woofers or dedicated subs.
• Pair is aimed at moderate power use; users wanting extreme loudness will need more powerful amplification.

Specifications

Our Verdict

The MB Quart NF1-116B 6.5' marine coaxial speakers are a practical choice for most boat audio upgrades where weather resistance and clear highs are priorities. They deliver musical tweeter detail, steady midrange, and installation-friendly shallow depth at a reasonable value when paired with a suitable amp or paired subwoofer for bass extension.

Frequently Asked Questions

Are these speakers waterproof?
They are water-resistant and carry an IPx67 marine-use designation, meaning they are designed to withstand exposure and splashes typical on boats.

Will these need a separate amplifier?
They run well from modest amplification given the 89 dB sensitivity and 40 W RMS rating, but a dedicated amp improves headroom and clarity at higher volumes.

Do they come with mounting hardware?
Yes, the pair includes white grilles, eight 1-3/8' stainless screws, 8 speed clips and a quick start guide, with specifications printed on the box.