Re: Sound deading material.

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September 11, 2018 at 7:37 pm #82663
chris-p
Participant

    Different materials attenuate different Db levels.

    The best material for an outboard would be a dense material. Perhaps 1# Vinyl Septum epoxied inside the cowl. I have some I could try.

    One of the offerings of my company is sound attenuation. Never tried it on my hobby though. We mainly do Natural Gas Plants near residential neighbourhoods.