Samsung AC MN KH/EU Series Technical Data Book page 60

7. Sound Data
Wind-Free 4Way Cassette
Sound Pressure level
• NR Curve
5) AC120NN4DKH/EU
70
65
60
55
50
High
45
Low
40
35
30
25
20
15
10
5
0
63 125
Octave Band Center Frequency(Hz)
NOTE
• Specifications may be subject to change without prior notice.
- Sound pressure level is obtained in an anechoic room.
- Sound pressure level is a relative value, depending on the distance and acoustic environment.
- Sound pressure level may differ depending on operation condition.
- dBA = A weighted sound pressure level
- Reference acoustic pressure 0 dB = 20μPa
60
1.5m
Microphone
250 500 1000 2000 4000
Model
AC120NN4DKH/EU
AC140NN4DKH/EU
6) AC140NN4DKH/EU
70
65
60
NR 65
55
NR 60
50
NR 55
High
45
NR 50
Low
40
NR 45
35
NR 40
30
NR 35
25
NR 30
20
NR 25
15
NR 20
10
NR 15
5
0 0
8000 63
High MID
45
45
125 250 500 1000 2000
Octave Band Center Frequency(Hz)
Unit: dB(A)
LOW
40 35
41 37
NR 65
NR 60
NR 55
NR 50
NR 45
NR 40
NR 35
NR 30
NR 25
NR 20
NR 15
0
4000 8000