Mitsubishi Electric PCA-RP50GA Service Manual page 14

PCA-RP140GA
PCA-RP140GA#1
PCH-P140GAH
90
80
70
60
50
40
30
APPROXIMATE
20
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63
1m
1m
about 1.4m
MICROPHONE
Downloaded from AC-Manual.com Manuals
NOTCH
High
Medium1
Medium2
Low
125 250 500 1000 2000
BAND CENTER FREQUENCIES, Hz
SPL(dB) LINE
48
46
44
42
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
4000 8000
ceiling
unit
14