Jim Lesurf wrote:

wrote:
On 14 Oct, 00:40, Eeyore wrote:
John Phillips wrote:
Eeyore wrote:
wrote:

An orchestra even in the auditorium can peak at over 120dB.

Do you have a reference for this? I have been looking for credible
sources for peak orchestral SPLs in the auditorium for a long while.

It's a 'well known fact' amongst audio professionals. Google it.

For some reason I have come to be wary of claims thrown around on the basis
of being a "well known fact".

http://www.musicalfidelity.com/produ..._response.html

" We know for a fact that concert hall peak sound pressure level (SPL) for a
medium sized symphony orchestra is 109-110dB. For a big symphony orchestra or
rock concert the levels are much higher."

And the nearer you sit !

Graham