Mitsubishi Electric Mr.SLIM PKH-1.6FKA Technical & Service Manual page 22

5. NOISE CRITERION CURVES
PKH-1.6FKA
PKH-2FKA
90
80
70
60
50
40
30
APPROTIMATE
20
TERESHOLD OF
REARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
PKH-4FKSA
90
80
70
60
50
40
30
APPROTIMATE
20
TERESHOLD OF
REARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
SPL(db ) LINE
NOTCH
(A)
Hi 43
Lo 36
500 1000 2000 4000 8000
SPL(db ) LINE
NOTCH
(A)
Hi 46
Lo 41
500 1000 2000 4000 8000
PKH-2.5FKA
PKH-3FKA
90
80
70
NC-70
60
NC-60
50
NC-50
40
NC-40
30
NC-30
APPROTIMATE
20
TERESHOLD OF
REARING FOR
NC-20
CONTINUOUS
NOISE
10
63
UNIT
NC-70
1m
NC-60
NC-50
MICROPHONE
NC-40
Ambient temperature 27:
NC-30
Test conditions are based on JIS Z8731
NC-20
22
NOTCH
Hi
Lo
125 250 500 1000 2000
BAND CENTER FREQUENCIES, Hz
WALL
1m
SPL(db ) LINE
(A)
45
39
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
4000 8000