SUBWOOFER ch
+20dB
+10dB
0dB
-20dB
-30dB
-40dB
-10dB
NR1508
LEVEL DIAGRAM
SUBWOOFER ch
-2.0-0.5+14=11.5dB
+30dB
-2.0-0.5+14+3=+14.5dB
MAX SIGNAL LEVEL
DOLBY LIMIT LEVEL (ALLch-3dBFS)
0dBFS
-10dBFS
-20dBFS
-30dBFS
-40dBFS
AK4458
NJU72343 MAX. OUTPUT 4.2Vrms
＋
SPEAKER
OUT
DSP
GAIN
ADJ.
PLD
NJU72343
PREOUT
PREOUT
150mVrms
-40dBFS(DIG.IN)
DD Config1
INPUT:-30dBFS DD LFE
-34dBFS(PCM.IN)
-37dBFS(A/D IN)
INPUT : -20dBFS(DIG.IN) PCM
200mV(A/D IN)
+6.5dB
MGAIN setting of MASTER VOL 00dB
･DOLBY DIGITAL I
N
-2.0dB - 0.5dB + 14dB
= + 11.5dB
･PCM DIGITAL IN
-2.0dB - 0.5dB + 14dB
= + 11.5dB
･ANALOG IN
-2.0dB
+ 14dB + 3.0dB = + 15.0dB
①
②
③
④
①:Basic OFFSET
of VOL=0dB
②:Fine-tuning b
y
Digital in
p
ut
③:OFFSET of SW-
ch
④:OFFSET of A/D
input
-2.0-0.5+14=11.5dB
PREOUT
300mVrms
0dBFS = +/-2.8Vpp=1.98Vrms
＋
－
AK4458VN
D/A
－
＋
40
Caution in
servicing
Electrical
Mechanical
Repair Information
Updating
