Sorry for the old thread resurrect, but this is something that I am currently interested in. I'm looking for a simple, in-line limiter for my wired IEM system.
I have managed to locate the HeadWize article on Designing A Limiter For Headphone Amplifiers
. While it might be exactly what I am looking for, it just seems far too simple.
As I continued my research, I found an in-line BBC Headphone Limiter
. The size and application are exactly what I am looking for, however these units appear to have been designed/manufactured in the '80s and may no longer be available.
For $200, the PreservEar system
looks like it will do the job, but I am struggling with the price.
On the cheap/experimental side of the fence, there are the Griffin MyPhones
and the Maxell SafeSounds
which limit to 85db nad 95db, respectively. I'm guessing that they might just contain a simple passive circuit similar to the HeadWize and/or the BBC Limiters. I could potentially gut them for the suitable parts and make a little adapter.