Uh, I used to test in a anechoic chamber at the local university but don't
now, I also tested other areas and found the following. You can test fine in
you living room. Background noiselevel is typically 5OdB at home. You place
a mat of acoustic foam on the floor, put yout mics up (1m away) place 4 more
sheets of acoustic foam round the speaker and mic's and final sheet on top

These knock 10dB off background noise and stop echo, run up 1 watt at 1khz
gives about 90dB in most case, this is 50dB above background and you can run
a sweep test and get results the same as in an anechoic chamber. (were not
interested in its frequency response or efficency at 40 dB any way!)

Again I think this is all smoke and mirrors stuff so that its 'too hard' to
do yourself.

None of us live inside a anechoic chamber and speakers sound awful when
played inside one (no natural room reverberation)

Alot of this smacks of the car makes 'economy mpg' by driving at 56Mph round
an oval test circut. Something that we all do....


"Ethan Winer" ethanw at ethanwiner dot com wrote in message
...
Flash,

Besides all that Mark said, you can't measure loudspeakers by playing
tones
in a typical room in a typical house. If you take it outside, far away
from
ambient noises, you'll have half a shot at it.

--Ethan