Vibrating arch speakers?

The Finn

Member
Aug 7, 2017
41
Helsinki, Finland
Boat Info
300 Sundancer (335) 2004
Engines
2x Diesel Volvo Penta 285hp, Drives DP-G
Hi,

I have twin VP kad300s on my 300DA and in idle spead they cause enough vibration that the arch speakers resonate against the arch causing unnecessary noise.

Have you faced this and what was your fix? The speakers attach quite well to the arch (have not yet figured how to detach the grid) but there is enough space left for small movememt. Not sure that tightening them up wll solve the problem. May be apply some type of filler around the speakers?

Thanks, The Finn
 
If they are loose, then tightening them up will reduce the vibration, if they are seated poorly, then they need to be properly seated, so they can be secured tightly. Are they too deep and contacting the inside of the arch? Is the cutout too small, preventing the speaker basket form seating flat against the arch? Is there too much radius on the arch to allow for the speaker to seat flat?
 
The attached pic might not help, but you can see the small crack between the speaker and arch. So I guess it could be fitted better to sit snug against the arch. I am able to press gently on the speaker and press it against the arch which stops the resonating.

So, will try to alter how it is fastened to the arch. There must be some type of clips that hold the speaker grid in place?
 

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Yes. Twist it and the cover will come off. I replaced all my speakers on my 98 290. Just be carefull if you do and order the shallow ones for the arch. Reg speakers will not fit and are too deep
 
Yes. Twist it and the cover will come off. I replaced all my speakers on my 98 290. Just be carefull if you do and order the shallow ones for the arch. Reg speakers will not fit and are too deep
 
Yes. Twist it and the cover will come off. I replaced all my speakers on my 98 290. Just be carefull if you do and order the shallow ones for the arch. Reg speakers will not fit and are too deep
 
I had one that rattled - same speaker. I messed with it a bit and it stopped. The cover twists I believe counter clockwise.
 

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