McIntosh MA9000, Руководство пользователя

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When the MA9000 is part of a Home Theater or
Multichannel Audio System the Right and Left Front
Channels from an Audio/Video Processor or Surround
Decoder can “Passthru” from the assigned MA9000
Input, into the MA9000 Power Amplifier Circurity.
The “Passthru” Audio Signal is also available for a
separate external Power Amplifier(s) via the number
1 Preamplifier Output Jacks. The Setup Mode allows
selection of the specified MA9000 Input to be used
for the Right and Left Front Channels. In the example
below, the Right and Left Front Channels from the
Audio/Video Processsor will be connected to the UN-
BALANCED 6 INPUT Jacks on the MA9000. Refer
to page 9 for additional connection information.
Note: The Phono and Digital Inputs are not assign-
able as a Passthru Input.
1. Press and hold in the INPUT Control to enter the
SETUP MODE. Refer to figure 2 on page 17.
2. Rotate the INPUT Control until “SETUP: Passth-
ru, Off” appears on the Information Display.
Refer to figure 37.
3. Rotate the VOLUME (ADJUST) Control to select
“SETUP: Passthru, UNBAL 6” Input. Refer to
figure 38.
4. Exit the SETUP Mode by several presses of the
INPUT Control.
The USB Automute Feature helps to ensure noise free
playback of streaming music via the MA9000 USB In-
put, as the Digital Audio Signal format changes (PCM,
DSD, etc.). On occasion due to the way a Digtal Audio
Music Recording was made, it may become desirable
to switch Off the USB Automute Feature. To switch
Off Automute, perform the following steps:
1. Press and hold in the INPUT Control to enter the
SETUP MODE. Refer to figure 2 on page 17.
2. Rotate the INPUT Control until “SETUP: USB
Automute, ON” appears on the Information Dis-
play. Refer to figure 39A.
3. Rotate the VOLUME (ADJUST) Control to select
“SETUP: USB Automute, OFF” Input. Refer to
figure 39B.
4. Exit the SETUP Mode by several presses of the
INPUT Control.
Setup, con’t
USB Automute
SETUP: Passthru
UNBAL 6
Figure 38
SETUP: Passthru
Off
Figure 37
Passthru
The MA9000 may be remotely controlled from other
equipment connected to the Rear Panel RS232 Jack.
The speed at which the MA9000 communicates (8 bit,
no parity and 1 stop bit) with other equipment is ad-
justable from 9,600 bits per second to 115,200 bits per
second. To change from the default speed of 115,200
bits per second, perform the following steps:
1. Press and hold in the INPUT Control to enter the
SETUP MODE. Refer to figure 2 on page 17.
2. Rotate the INPUT Control until “SETUP: RS232,
115200 Baud” appears on the Information Dis-
play. Refer to figure 40.
3. Rotate the VOLUME (ADJUST) Control to select
the desired Baud Rate Speed.
4. Exit the SETUP Mode by several presses of the
INPUT Control.
Comm Port Baud Rate
Figure 40
SETUP: RS232
115200 Baud
Figure 39B
SETUP: USB Automute
OFF
SETUP: USB Automute
ON
Figure 39A