Local Storage seems to be disabled in your browser. For the best experience on our site, be sure to turn on Local Storage in your browser.

JBL 6"x9" (160x230mm) 300W Coaxial Marine Speakers Pair (MS9520)

Out of stock

Quick Overview
Pair of 6" x 9" (16cm x 23cm), 300 Watts Peak (100W RMS), 2-Way Coaxial White Marine Speakers (4-Ohm) by JBL


The new JBL Marine Series Speakers are ready to take on anything Mother Nature throws your way. With Plus One™ woofers and balanced dome tweeters, you'll hear the clarity of your audio above the raucous sounds of the sea. Designed to take on the sun, sea spray and scrub downs, these powerful speakers feature waterproof motor structures, a one-piece cast-polymer basket, a sealed magnet, and rubber surrounds.


  • Plus One™ woofer cones
  • Balanced dome tweeters
  • Designed for the elements
  • Individually voiced
  • OEM-level reliability testing
  • Stainless steel mounting hardware


  • Type: 6" x 9" coaxial
  • Peak power handling: 300W
  • Power handling, continuous average: 100W
  • Frequency response: 37Hz – 20kHz
  • Nominal impedance: 4 ohms
  • Sensitivity (2.83V/m): 92db


  • Plus One™ Woofer Cones - Harman’s patented (US patent #7,548,631) Plus One™ polypropylene cones provide more overall speaker-cone area than other cones in its class — the result is higher sensitivity, increased low-frequency output and greater musical character.
  • Balanced Dome Tweeters - Weather resistant tweeters deliver a smooth high-frequency response and increased power handling for highs and mids, which equates to more lifelike sound from vocals, cymbals, brass instruments and pianos.
  • Designed for the Elements - Their one-piece polymer basket is designed to stand the test of time, even after long exposure to the sun and salt. Rubber surrounds offer superior edge protection and are much more reliable than foam. And a grille-mounted tweeter allows the front of the woofer cone to be sealed, protecting the motor structure from sea spray.
  • Individually Voiced - For most brands, off-the-shelf speakers and a cursory approval of frequency response curves are good enough. That’s not the case with JBL. We don’t only listen to our speakers against the competition — we voice them against each other to ensure each line has the consistent JBL sound signature that’s known and sought out by those who care about their audio. This is just part of an extensive development process undertaken by some of the best transducer engineers in the world to provide the finest listening experience at any price point.
  • OEM-Level Reliability Testing - JBL tests every speaker design to rigid specifications, subjecting them to extreme conditions that would break lesser speakers — this is ideal for equipment that will be heavily driven in the elements. We freeze them, bake them, shake them, blast them with ultraviolet light and drive them at full power for days to make sure your audio investment lasts for years.

More Information

Brand JBL
MPN MS9520
Model MS9520
UPC 050036322751
Condition New
Featured Yes
Shape Oval
Warranty 1 Year (by Manufacturer)
Speaker Type Full-Range Speaker(s)
Driver Design 2-Way
Speaker Size 6"x9"
Number of Speakers 2
Mounting Depth 3-5/16" (83mm) - Top Mount
Peak Power 300 Watts
RMS Power 100 Watts
Frequency Response 37Hz - 20kHz
Tweeter Type Dome
Sensitivity 92dB (2.83V/1m)
Impedance 4 Ohms
Highlights Water-Resistant
Accessories/Tools Grille(s), Logo Sticker(s), Mounting Screws
Write Your Own Review
Only registered users can write reviews. Please Sign in or create an account