SUBWOOFER ch
s
+20dB
+10dB
0dB
-20dB
-30dB
-40dB
-10dB
+20dB
+10dB
-20dB
-30dB
-40dB
-10dB
LINE IN/EXT IN
SR6011
LEVEL DIAGRAM
SUB WOOFER ch
200mV
+30dB
FULL SCALE LEVEL
DOLBY LIMIT LEVEL (ALL ch -3dBFS)
+
EXT IN
DSP
x4pcs
NJU72343
GAIN
ADJ.
PRE OUT
MUTE
PCM1690
D/A
-
-
+
PLD
PRE OUT
200mVrms
Headroom:3dB
Volume IC: NJU72343 NON CLIP MAX SIGNAL LEVEL 4.2Vrms
150mVrms
HDAM
GAIN Setting of MASTER VOL 00dB
・DIGITA
L IN
-2.0dB -0.5dB
+14dB
= +11.5dB
・ANALOG I
N
-2.0dB
-0.5dB
+14dB +3.0dB = +14.5dB
①
②
③
④
⑤
①:Basic OFFSET
of VOL=0dB (indication valude)
②:Fine-tuning b
y software Digital input
③:Voltage due t
o hardware of analog input
④:Correction of
Subwoofer
⑤:OFFSET of A/D
input
+11.5dB
L.P.F GAIN = +3.3dB
+14.5dB
-2.5dB
LINE IN/EXT IN
-34dBFS(DIG.IN:PCM)
-40dBFS
(DIG.IN:DD
DD INPUT:-30dBFS LFE 30Hz
PCM INPUT:-20dBFS L+R
-37dBFS(A/D IN)
ANA INPUT:200mVrms L+R 30Hz
+11.5dB
2.83Vrms=0dBFS
-10dBFS
-20dBFS
-30dBFS
-40dBFS
PCM1690
Differential Out
-50dBFS
+30dB
57
Caution in
servicing
Electrical
Mechanical
Repair Information
Updating