Electra Monoblock 7, Service Manual

Page: 22 / 187

6-2
SOUND LEVEL CHARACTERISTICS
Revision Y05-01 Service Manual - MOBILE Series
6. 3 Sound Pressure Level Spectrum (Measured as Figure 2)
SP 11 Cooling SP 11 Heating
BAND CENTER FREQUENCIES, Hz
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
OCT
A
VE
BAND
SOUND
PRESSU
RE
LEVEL,
dB
re
0.002
MICRO
BA
R
SP 16 Cooling
SP 16 Heating
Fig.2 Microphone Distance from Unit
BAND CENTER FREQUENCIES, Hz
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
OCT
A
VE
BAN
DS
O
U
N
D
PRESSU
RE
LEVEL,
dB
re
0.002
MICRO
BA
R
BAND CENTER FREQUENCIES, Hz
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
OCT
A
VE
BAND
SOUND
PRESSU
RE
LEVEL,
dB
re
0.002
MICRO
BAR
BAND CENTER FREQUENCIES, Hz
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
OCT
A
VE
BAND
SOUND
PRESSU
RE
LEVEL,
dB
re
0.002
MICRO
BAR