Re: Isolation headphones

["Chris Edwards" chris2edwards]

On Thu, 13 Dec 2007, Russell Dawkins wrote:

| I use a pair of Etymotic ER4Ss under a pair of Howard Leight  Thunder =

| 29  folding shooters' ear muffs for maximum isolation. I figure I'm
| getting roughly 60 dB.

Where you get the 60dB figure from ?  Adding the attenuation of the er4s
and the shooters muffs - does it really work like that ?

According to Mike Feldman's earlier post, your itself head is too leaky...