MS 6520


180-Watt, 6" Two-Way Marine Loudspeaker

$119.95119.95 per pair

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The sound of the sea could use an upgrade

The new JBL Marine Series Speakers are ready to take on anything Mother Nature throws your way. With Plus OneTM 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.

Item# MS6520

General Specifications

Type 6” Coaxial

Audio Specifications

Power Handling (Peak) 180W
Frequency Response 50 Hz – 20 kHz
Sensitivity 90 db
Nominal Impedance 4 ohms
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Spec Sheet

English 3 MB
  • 2 MS6520 speakers
  • 1 set of mounting hardware
  • 2 sets of speaker wire

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1 Year Warranty

Note: the Warranty Card provided with your JBL product contains the full terms and conditions of your warranty.

Unless a different warranty period is stated in the Warranty Card provided with your JBL product, JBL warrants for a period of 1 year (5 years for any non-powered speakers) from the date of retail purchase by the original end-use purchaser, that this product, when delivered to you in new condition, in original packaging, from a JBL authorized reseller and used in normal conditions, is free from any defects in manufacturing, materials and workmanship. Refer to the Warranty Card provided with your JBL product for specific details including what is not covered along with other terms and conditions.

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MS 6520 is rated 1.6 out of 5 by 10.
Rated 5 out of 5 by from Definitely a big step up Excellent sound quality. Significantly better than the Sony speakers that the MS6520 replaced.
Date published: 2017-08-02
Rated 2 out of 5 by from Frustrated with grill replacements I was on here looking for speaker grill replacements and noticed a lot of similar reviews. I have a 2 year old Sea Hunt, and need grill replacements for all 6 of my speakers. There are 4 that are broken/cracked, and the other 2 are brittle and about to break. Is there a recommended replacement that won't do the same thing?
Date published: 2017-11-27
Rated 2 out of 5 by from fragile bought boat in 2016, so far three of speaker grills broke, since then all six have been replaced, but two of them do not work, trying to get those replaced. i was told by shop that it is a flaw. newer ones seem to have a better grill, time will tell, hopefully they willl replace the two new ones that are not producing any sound. its been frustrating, and not a cheap boat.
Date published: 2017-06-19
Rated 1 out of 5 by from Poor Quality of Speaker Grill I have a 2015 Sea Hunt with 6 JBL 6250’s. Two of the six speaker grills have already cracked and the others are brittle. These speakers do not last in the Florida saltwater environment.
Date published: 2017-12-06
Rated 1 out of 5 by from Speaker durability My boat is 2 years old and all four speaker covers have cracked and broken. The sound was great but they do not hold up to the sun. JBL needs to fix this product flaw.
Date published: 2017-08-28
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Have the MS 6520 speaker grills been improved. I have heard poor reviews of the grills cracking from the sun.

Asked by: Squash2626
We have not been given any information if this has been a known issue with the MS 6520 or if the speaker grilles have been given a different material for possibly better durability. If you are the owner of an MS 6520 that is having a similar issue, we would like to work with you directly to help you with your issue. Please submit a case request at https://www.jbl.com/support-contact.html and the Customer Service Team will be more than happy to assist you.
Answered by: Steven M
Date published: 2018-01-15

Are any of your JBL marine speakers magnetically shielded from interfering with a nearby boat compass?

Asked by: Boatperson
Unfortunately, our marine speakers are not shielded. Mounting distance of the speaker would really depend on how the compass would react to the speaker. Try holding the speaker near the compass and walk away from the compass until it stops reacting to the speaker. The distance from where you stopped would be a good location to mount the speaker.
Answered by: Ren at Customer Service
Date published: 2017-12-02

Will these fit on Harley Davidsons?

Asked by: Harleydude
This JBL MS6520 is designed to take on the sun, sea spray and scrub downs, it will suit outdoor climate changes just fine. Whether or not the speaker will adequately fit your Harley-Davidson we are unsure.
Answered by: Joe G at Customer Service
Date published: 2017-12-02

How deep are these?

Asked by: Renee
Thank you for your question with the grill installed it will be 4" depth and without the grill its 70mm
Answered by: Randy at JBL
Date published: 2017-12-02

Will these fit the same hole and bolt circle as the MS6200? I am replacing the MS6200's I have due to age and want to make sure they will fit. Curios because the MS6200 say 6.5" and these say 6". 

Asked by: BobM
Unfortunately, the mounting screw holes on the MS6520 is totally different from the mounting holes of the MS6200 as the MS6520 is slightly smaller than the MS6200. The screw holes were adjusted to accommodate the difference in size.
Answered by: Amir at Customer Service
Date published: 2017-12-02

Hi,  the instructions call for a 5 1/16 hole saw which doesn't seem available everywhere I looked. Any suggestions 

Asked by: steve a
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