I just found a nice test tone / frequency test cd, ranging from 10-300 Hz
This one is nice
http://www.realtraps.com/test-cd.htm
TRACK CONTENTS
(All tracks are recorded at -1 dB.)
Track 1: 10-19 Hz in 1 Hz increments.
Track 2: 20-29 Hz in 1 Hz increments.
Track 3: 30-39 Hz in 1 Hz increments.
Track 4: 40-49 Hz in 1 Hz increments.
...
Track 29: 290-300 Hz in 1 Hz increments.
Track 30: Wide band pink noise Wave file, 15 seconds, for setting the level to about 70 dB for the subsequent tests
http://www.realtraps.com/test-cd.htm








