Subw O O Fer Channel - Denon AVR-S730H Service Manual

SUBWOOFER ch
AVRS730H/X1400H LEVEL DIAG RAM
+ 20dB
+ 10dB
2CH IN 0dB
(200m V)
-10dB
-20dB
-30dB
-40dB
-50dB

SUBW O O FER CHANNEL

PLD DAC
5M 80ZT PCM 1690
DSP
CS49844A
DAC
AK4458
1.98Vrm s= 0dBFS
-10dBFS
-20dBFS
L.P.F G AIN = + 6.5dB
-30dBFS
PCM INPUT:-20dBFS L+ R -34dBFS(DIG .IN:PCM )
ANA INPUT:200m Vrm s L+ R 30Hz -37dBFS(A/D IN)
DD INPUT:-30dBFS LFE 30Hz -40dBFS -40dBFS
(DIG .IN:DD)
-50dBFS
NJU72340A
VO LUM E IC : NJU72343 NO N CLIP M AX SIG NAL LEVEL 4.2Vrm s
FULL SCALE LEVEL
DO LBY LIM IT LEVEL= 1.41Vrm s (ALL ch -3dBFS)
-2.5dB
+ 14.5dB
LINE IN
+ 11.5dB
+ 11.5dB
G AIN setting of M ASTER VO L 00dB
- DIG ITAL IN -2.0dB -0.5dB + 14dB = + 11.5dB
- ANALO G IN -2.0dB -0.5dB + 14dB + 3.0dB = + 14.5dB
(1) (2) (3) (4) (5)
(1):Basic O FFSET of VO L= 0dB (Indication valude)
(2):Fine-tuning by softw are Digital input
(3):Voltage due to hardw are of analog input
(4):Correction of Subw oofer
(5):O FFSET of A/D input
35
M UTE
G AIN
ADJ.
PRE O UT
SUBW O O FER
+ 30dB
+ 20dB
+ 10dB
PRE O UT
300Vrm s
0dB (200m Vrm s)
PRE O UT
150Vrm s
-10dB
-20dB
-30dB
-40dB
-50dB