Soooo.....awhile back John Bender had a friend of his with a "maybe good" db meter" read 105 to 110 in his RV12. John does not have an interior. I looked on my multimeter for db but it didn't have one! What a crock! So I bought a "maybe not good" app on my IPhone. It was worthless. Now I have a real "maybe good" db meter that I bought off the internet. I have an interior. My readings were in the 95 to 100 range, never exceeding 100. My fifth grade math is kicking in now....sounds like maybe the interior is worth 10db...that's quite a lot. Maybe there is a real Hollywood sound engineer that can put some genuine engineering to this but for now my study will rule. Besides, it looks so cool, it has pockets and everything. Abby really does a great job.