You are correct. For all the hoopla about how good and expensive the Bose are,
nobody yet has been able to find the mic level control.

HOWEVER, on almost everything else, it is either a little TINY screwdriver
adjust on the mic itself, or if there is an external amplififer board, it is on
the amplifier board, either in the earcup or on a little external box on the
cordset.

Jim


"G.R. Patterson III"
shared these priceless pearls of wisdom:

-
-Nothing on the Bose. There are two small screws on the Peltor and Sigtronics
-mics, but they appear to simply be what holds it to the boom. Nothing else.

Jim Weir (A&P/IA, CFI, & other good alphabet soup)
VP Eng RST Pres. Cyberchapter EAA Tech. Counselor
http://www.rst-engr.com