I think one of the most knowledgeable on the subject is Dan Newland.
Check him out at

http://www.pegasusaeromarine.com/

Dan Ballin

On Tue, Nov 26, 2013 at 10:21 AM, Stevens Family
<stevens5@swiftdsl.com.au> wrote:
> I have just done a search of the archives under “sound proofing”, and found
> some very useful information. However I notice that most of this discussion
> took place some years ago. So my question for the list, is what are builders
> using nowdays to reduce cockpit noise?
>
>
>
> Any suggestions would be much appreciated.
>
>
>
> Regards,
>
>
>
> Rob Stevens,
>
> Perth, Western Australia
>
>
>
>