SUBWOOFER ch
+20dB
+10dB
0dB
-20dB
-30dB
-40dB
-10dB
+20dB
+10dB
-20dB
-30dB
-40dB
-10dB
LINE IN/EXT IN
AVR/AVC-X6500H
LEVEL DIAGRAM
SUB WOOFER ch
1.98Vrms=0dBFS
200mV
+30dB
FULL SCALE LEVEL
DOLBY LIMIT LEVEL (ALL ch -3dBFS)
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 (i
ndication va
lude)
②:Fine-tuning b
y
software D
i
gital input
③:Voltage due t
o
hardware o
f
analog inp
ut
④:Correction of
Subwoofer
⑤:OFFSET of A/D
input
＋
DSP
x4
p
cs
NJU72343
GAIN
ADJ.
PRE OUT
MUTE
AK4458
D/A
－
－
＋
PLD
PRE OUT
+11.5dB
L.P.F GAIN = +6.5dB
200mVrms
Headroom:3dB
Volume IC
:
NJU72343 NON CLIP MAX SIGNAL LEVEL 4.2Vrms
+14.5dB
-2.5dB
LINE IN/EXT IN
-34dBFS(DIG.IN:P
CM)
-40dBFS
(DIG.IN:DD
DD INPUT:-30dBFS LFE 30Hz
PCM INPUT:-20dBFS L+R
-37dBFS(A/D IN)
ANA INPUT:200mVrms L+R 30Hz
-10dBFS
-20dBFS
-30dBFS
-40dBFS
AK4458
-50dBFS
+11.5dB
150mVrms
+30dB
Before Servicing
This Unit
Electrical
Mechanical
Repair Information
Updating
51
