Electra Monoblock 7, Service Manual

Page: 21 / 187

6-1
SOUND LEVEL CHARACTERISTICS
Revision Y05-01 Service Manual - MOBILE Series
6. SOUND LEVEL CHARACTERISTICS
6.1 Sound Pressure Level
6.2 Soud Pressure Level Spectrum (Measured as Figure 1)
Monoblock 7 SP 11
FAN SPEED LINE
HI
ME
LO
0.9m
microphone
1m
Fig.1 Monoblock
BAND CENTER FREQUENCIES, Hz
A PPROXIM A TE
THRE S HOLD OF
HE A RING FOR
CONTINUOU S
NOI S E
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20 OCT
A
VE
BAND
SOUND
PRESSURE
LEVEL,
dB
re
0.002
MICRO
BAR
BAND CENTER FREQUENCIES, Hz
A PPROXIM A TE
THRE S HOLD OF
HE A RING FOR
CONTINUOU S
NOI S E
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20 OCT
A
VE
BAND
SOUND
PRESSURE
LEVEL,
dB
re
0.002
MICRO
BAR
BAND CENTER FREQUENCIES, Hz
A PPROXIM A TE
THRE S HOLD OF
HE A RING FOR
CONTINUOU S
NOI S E
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20 OCT
A
VE
BAND
SOUND
PRESSURE
LEVEL,
dB
re
0.002
MICRO
BAR
SP 16