Electra DNG 18 Service Manual page 46

SOUND LEVEL CHARACTERISTICS
DNG 30
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
BAND CENTER FREQUENCIES, Hz
DNG 44
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
BAND CENTER FREQUENCIES, Hz
FAN SPEED LINE
HI
ME
LO
7-2
NC-70
NC-60
NC-50
NC-40
NC-30
APPROXIMATE
THRESHOLD OF
HEARING FOR
NC-20
CONTINUOUS
NOISE
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
Revision Y05-01
CONTENT
DNG 37
BAND CENTER FREQUENCIES, Hz
Service Manual - DNG Series
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20