FRONT ch
LEVEL DIAGRAM
s
+20dB
+10dB
0dB
-20dB
-30dB
-40dB
-10dB
+20dB
+10dB
-20dB
-30dB
-40dB
-10dB
LINE IN/EXT IN
-10dBFS
0dBFS=1.06Vrms
-20dBFS
-30dBFS
-40dBFS
ADC:AK5358
H/
P
OUT
SR6011
LEVEL DIAGRAM
FRONT ch
200mV
+30dB
S
P
K O
U
T
+
29
d
B
F
U
L
L SC
AL
E L
E
VE
L
= 2
.
0V
rm
s
D
OL
BY
LIM
I
T
L
EV
EL
= 1
.4
1
V
rm
s (
A
LL
c
h
-
3
dB
F
S
)
+
LINE IN
EXT IN
H/POUT
+
SPEAKER
OUT
DSP
x
4p
cs
ANALOG
ATT
NJU72343
GAIN
ADJ.
PRE OUT
MUTE
TO ZONE2
PCM
16
90
D/A
-
-
+
P
L
D
AK
5
3
58
P
R
E O
U
T
2
76m
V
rm
s/
33
Ω
4
.
2
4V
rms
/
8Ω
-2.5dB
L
.P.F GAIN
=
-
2
.6dB
200mVrms
Headroom:3dB
2.82Vrms:A/D FULL SCALE
-
-8.5dB
-8.5dB
V
ol
um
e I
C
:
N
J
U7
2
3
4
3
N
O
N
C
L
I
P M
AX
S
IG
N
A
L L
E
V
E
L 4
.
2Vr
m
s
AD IN=75mVrms
+
MIC IN
AD IN=319mVrms
ACM2(DM-A409)Sensitivity:
-38.8dB/Pa=11.48mV/Pa at94dBSPL@Operation Voltage 5.0V
(94dBSPL is expected to -11dBFS)
MIC IN
11.48mVrms
851mVrms
+37.60dB
-2
3
.7dB
15
0
mVrm
s
-2.5dB
LINE IN/EXT IN
NJU72750
NJU72751
-8.5dB
NJU72750
HDAM
GAIN Setting of MASTER VOL 00dB
Bd5.2- = Bd5.0- Bd0.2- )LATIGID( SEY:WS・
・SW:YES (ANALOG) -2.0dB -0.5dB +3.0dB = +0.5dB
・SW:NONE (DIGITAL) -2.0dB -0.5dB +12.0dB = +9.5dB
・SW:NONE (ANALOG) -2.0dB -0.5dB +12.0dB +3.0dB = +12.5dB
①② ③ ④ ⑤
â‘ :Basic OFFSET of VOL=0dB (indication valude)
②:Fine-tuning by software Digital input
③:Voltage due to hardware of analog input
④:OFFSET of SW NONE
+9.5dB
+12.5dB
+0.5dB
2.83Vrms=0dBFS
-10dBFS
-30dBFS
-40dBFS
PCM1690Differential Out
-35dBFS(A/D IN)
-20dBFS(DIG.IN)
-23dBFS(A/D IN)
S
W:
YES
-32dBFS(DIG.IN)
S
W:N
O
N
E
55
Caution in
servicing
Electrical Mechanical Repair Information Updating