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SUBWOOFER ch
+20dB
+10dB
LINE IN/EXT IN
200mV
0dB
-10dB
-20dB
-30dB
-40dB
AVR/AVC-X6500H
LEVEL DIAGRAM
SUB WOOFER ch
AK4458
＋
＋
PLD
D/A
－
－
DSP
x4pcs
AK4458
1.98Vrms=0dBFS
-10dBFS
-20dBFS
L.P.F GAIN = +6.5dB
-34dBFS(DIG.IN:PCM)
-30dBFS
PCM INPUT:-20dBFS L+R
ANA INPUT:200mVrms L+R 30Hz
-37dBFS(A/D IN)
-40dBFS
-40dBFS
DD INPUT:-30dBFS LFE 30Hz
(DIG.IN:DD
-50dBFS
NJU72343
GAIN
ADJ.
FULL SCALE LEVEL
Volume IC: NJU72343 NON CLIP MAX SIGNAL LEVEL 4.2Vrms
DOLBY LIMIT LEVEL (ALL ch -3dBFS)
Headroom:3dB
-2.5dB
LINE IN/EXT IN
+14.5dB
+11.5dB
+11.5dB
GAIN Setting of MASTER VOL 00dB
･DIGITAL IN
-2.0dB -0.5dB
+14dB
･ANALOG IN
-2.0dB
-0.5dB +14dB +3.0dB = +14.5dB
①
②
③
①:Basic OFFSET of VOL=0dB (indication valude)
②:Fine-tuning by software Digital input
③:Voltage due to hardware of analog input
④:Correction of Subwoofer
⑤:OFFSET of A/D input
51
MUTE
= +11.5dB
④
⑤
PRE OUT
+30dB
+30dB
+20dB
+10dB
200mVrms
PRE OUT
150mVrms
-10dB
-20dB
-30dB
-40dB
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