Flew the EAA's two RV-6A's for quite a while, both sliders. One had a really good rubber canopy seal, the other had none. The difference was night and day. You could take the headset off in the one with the canopy seal and still have a conversation.
Did they just run some sort of rubber seal around the canopy ? Can you give more details please, or a photo.
The iPhone has DB meter apps. I bought one and tested my RV7, it runs 99 db in cruise at about 160 kts. My 54 inch 28 hp riding lawn mower read about 97 db. The demo sound booths at OSH used to try new headsets were 89-90 db. if you get one of these cheap Apps you could measure any improvements you made. My rv7 has no sound deadening material.
Soundproofing adds weight. The only soundproofing in an RV I ever thought worth it is leather seats. I agree with Steve's advice. You have to wear headsets anyway so why not make em high quality ANR? My Stratus 50D's are so efficient I usually turn off the noise cancelling feature anyway.....$1200 will buy you two good sets of ANR head sets, and that makes more difference than everything else combined....
Hi Bill,Rick,
Where do you keep your plane, I am at SUS
Bill