Yamaha DSP-AX620 Service Manual page 19

2. FRONT CH
• The input signal is automatically identified and switched in the priority order of dts
PCM AUDIO Analog (A/D) according to the signal detection.
• The front channel signal is output to the main channel.
• Signals are output through DSP (see the signal path in the figure below) without using the
external DRAM. (Head margin included)
2.FRONT NORMAL
2.FRONT MIX
(2ch/Multi)
*Multi: Lo/Ro Down Mix
ANALOG
CODEC
AK4527
DIGITAL
NORMAL [Remote control code: 7A—8B (PRG 4)]
The head margin is included and the front channel signal is output to the main channel.
Head margin
MAIN L/R:
CENTER:
FL/FR:
RL/RR:
SWFR:
Reference
INPUT : DVD ANALOG
SWFR: 50Hz, Others: 1kHz
Condition
Both ch, -26 dBV, volume 0dB
MIX [Remote control code: 7A—8C (PRG 5)]
The head margin is included and the front channel signal is output to the main channel
in the mixed state.
Head margin
MAIN L/R:
CENTER:
FL/FR:
RL/RR:
SWFR:
Reference
INPUT : DVD ANALOG
SWFR: 50Hz, Others: 1kHz
Condition
Both ch, -26 dBV, volume 0dB
AC3D3 YSS928
(A/D)
MAIN
DSP
(Decoder)
PCM THR
DIR
Note: (SDOxx) represents a terminal name of AC3D3.
The shaded square (
DOLBY DIGITAL
Mute
Mute
-6 dBFS
Mute
Mute
SPEAKERS
MAIN L/R CENTER
- ∞ dBV
19.2 dBV
0 dB
Mute
-6 dBFS
Mute
Mute
SPEAKERS
MAIN L/R CENTER
- ∞ dBV
25.2 dBV
L/R L/R
SDOB0
SUB DSP
SDOB1
L/R
SDOB2 -6dB(Antiphase)
SDOB3
4M DRAM
) means that the element included in it does not operate.
DSP-AX620
REAR L/R SWFR
- ∞ dBV - ∞ dBV
REAR L/R SWFR
- ∞ dBV - ∞ dBV
L
D/A
0dB or
AK4382
Mute
R
CODEC C
Mute
(D/A)
SWFR
AK4527
FL
FR
RL
Mute
RR
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