Infinity Reference 622MLT Marine Speaker Review

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The Bottom Line

If you’re looking to buy a marine speaker that has it all – well, this is the way to go! Providing a rich, clear sound without distortion, the Infinity Reference 622MLT Marine Speakers deliver high-quality sound for your boat.

Infinity Reference 622MLT Marine Speakers Review - Outeraudio

75 W

225 W

93 dB

3.92 dB

Whether you want to spend a day on the boat all by yourself or with family and friends, one is for sure – having a quality speaker can make your day even better. Marine speakers are specifically designed to provide good sound quality, while still being able to withstand exposure to salt, water, and UV rays. 

Every person who wants only the best sound for their boat has heard of Infinity – one of the best companies when it comes to quality marine speakers. In this article, we’ll be taking a closer look at the Infinity Reference 622MLT Marine Speakers.

Design & Features

We must admit, we fell in love with the looks of this speaker the moment we saw it. Its clean design and appealing titanium color make it a beautiful addition to any boat’s sound system. The blue cone adds some additional life to the visuals that really makes the speaker pop.

Apart from just aesthetics, the Infinity Reference 622MLT is extremely well built. Polypropylene woofer cones are lightweight and stiff, ensuring durability. The woofer surround material is UV-resistant, protecting the speaker from harmful UV rays. Moreover, this material will ensure optimal cone-edge suspension and will also absorb distortion, making the lows strong and clear. 

A magnet structure and a sealed cone are designed to withstand extra moisture, while the grille won’t lose its finish. Not only that, but the Infinity Reference 622MLT speaker also features a cast-polymer basket that won’t corrode. 

Infinity Reference 622MLT 2

Sound Quality

Moving along to sound quality, it’s easy to see why Infinity is known to deliver some of the best marine speakers available. As the Infinity Reference 622MLT is a two-way speaker, it can produce both lows and highs of good quality.

In addition, the speaker features a grille-mounted 1¼-inch semi-dome tweeter. A tweeter is a speaker driver responsible for producing the highest range frequency. What also adds up to the high-quality sound, is the 92dB speaker sensitivity of the Infinity Reference 622MLT.

With all this being said, it’s not surprising that these speakers deliver clear sound without distortion. The treble is crisp and the bass is good, providing an overall rich sound. The sound is punchy and sounds natural, while still having personality and flare.

Thanks to the quality parts, this speaker works great without an amplifier. However, if you do want to have a loud and powerful sound system, keep in mind that this is a 4-ohm speaker. What’s more, the speaker has an RMS of 75 watts and a peak power of 225 watts.

If you’re not familiar with the terms “peak power” and “continuous power”, here’s a brief explanation:

Infinity Reference 622MLT 4


Installing the Infinity Reference 622MLT Marine Speakers is fairly easy, though it will take some time. Specific mounting instructions aren’t included in the box, but stainless steel mounting hardware is included. This makes the installation a whole lot easier.


Premium sound, top-notch design, and durability – we’ve told you that this speaker has it all. Surprisingly, this speaker comes at a reasonable price, which is one more reason why you should buy it. For under $230, you can get the Infinity Reference 622MLT Marine Speakers and enjoy the excellent sound for years to come. If you’re looking for a similar quality speaker, but slightly more affordable, consider the Infinity Reference 612m Marine Speaker.

What’s in the Box?

  • Infinity Reference 622MLT Marine Speakers with grilles
  • Stainless steel mounting hardware
  • Foam gasket
  • RGB lighting pigtail harness
  • Quick Start Guide

The Final Word 

Built with high-quality materials and parts, it’s easy to see why Infinity delivers some of the best marine speakers available. The Infinity Reference 622MLT Marine Speakers will last you a long time, withstanding the harsh conditions of the ocean.

With 75W RMS and 225W peak power, these speakers deliver excellent sound quality. The appealing titanium finish ensures a complementary addition to any boat. with the Infinity Reference 622MLT Marine Speakers, you can enjoy high-quality sound while admiring the waves. If you’re looking to buy a marine speaker that has it all – well, this is the way to go. 

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Author: Jake Currier

Hailing from Melrose, Massachusetts, Jake is an audio engineer and graphic designer. He loves music, technology, video games, and writing! When he's not writing for Outeraudio, you'll find him playing the keyboard and guitar, as well as adding vocals.

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