Marantz SR 8015 - Page 61

SUBWOOFER ch
s
s
+20dB
+10dB
0dB
-20dB
-30dB
-40dB
-10dB
+20dB
+10dB
200mVrms
-20dB
-30dB
-40dB
-10dB
-10dBFS
-20dBFS=198mVrms
28.0mVrms
14.0mVrms
200mV
+30dB
PCM INPUT:-20dBFS LFE 30Hz
PRE OUT
＋
EXT IN
＋
SPEAKER
D
SP
x2
p
cs
GAIN
PRE OUT
MUTE
－
－
＋
PLD
DD INPUT:0dBFS LFE 30Hz
Co
nf
ig1
(S/
S
/S/
Y)
DOL
BY
LI
M
IT L
EV
EL
=2
.5V
r
ms (
5.
1c
h-
3
d
BF
S a
t
3
0H
z
)
4.75Vrms
L
.P
.F
GAI
N=
+3
.7
2d
B
+14.5dB
P
R
E OUT
62.
6
mVrms
+18.0dB
3
0
0mV
r
ms
ANA INPUT:200mVrms L+R 30Hz
19.8mVrms
+12.5dB
0dBFS=1.980rms
F
UL
L
SC
A
L
E L
E
V
E
L=
3.
56
V
r
ms
(
3.
8
2Vr
m
s
)
-37dBFS(PCM IN)
-40dBFS(A/D IN)
DD INPUT:-30dBFS LFE 30Hz
1.
13
Vrm
s
-43dBFS(DD IN)
Config1
+14.5dB
4
.7
5
Vrm
s
(
5.
09
V
r
ms
)
N
ON
CLI
CP
M
AX
S
IG
N
A
L L
E
VE
L 4
.
0
V
rm
s
-
2.5dB EXT IN
1
5
0
m
V
r
ms
NJU72343 8ch Volume
AK4558 or PCM5102A
HDAM
GAIN Setting of MASTER VOL 00dB
･DIGITAL IN -2.0dB -0.5dB +14dB = +11.5dB
･ANALOG IN -2.0dB -0.5dB +14dB +3.0dB = +14.5dB
① ②③④ ⑤
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
LEVEL DIAGRAM
SUBWOOFER ch
AK4558
or
PCM5102A
D/A
61
Before Servicing
This Unit
Electrical Mechanical Repair Information Updating