McIntosh MA7900, Owner'S Manual

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The MA7900 functionality is controlled by internal
software that is know as Firmware. The MA7900
has two different Firmwares, one is the “System
Firmware” (responsible for the basic operation of the
MA7900) and the other known as USB Audio Firm -
ware (responsible for the “USB Connection and Con-
version” of a Digital Audio Signal from the Comput-
er). The Version of the Firmwares in the MA7900 can
be identified at any time by utilizing the Setup Mode.
1. Press and hold the INPUT CONTROL until the
Front Panel Display indicates “MA7900 V_.__,
S/N: _______”. The number after the “V” is the
firmware version and the number after the “S/N”
is the serial number of the unit. Refer to figure 2.
2. The number after the character “V” is the Firm-
ware number.
3. Rotate the INPUT CONTROL Clockwise until
the Front Panel Display indicates “McIntosh USB
AUDIO, V2.10 or higher USB Audio Firmware”.
Refer to figure 3.
4. To exit from the Setup Mode, press the INPUT
CONTROL and the Front Panel Display will revert
back to its normal display.
2. Rotate the VOLUME Control until “SETUP:
SOURCE INPUT, CD :BALANCED” appears on
the Front Panel Display. Refer to figure 5.
The second example will illustrate reassigning the
CD2 Input (connected to a SACD/CD Player) from
CD2 Input (RCA Jacks) to the DIGital 1 Optical Input.
3. Press the VOLUME Control and the CD Input will
change to the CD2 INPUT. The Front Panel Dis-
play will now indicate “SETUP: SOURCE INPUT,
CD2 :RCA”. Refer to figure 6.
4. Rotate the VOLUME Control until “SETUP:
SOURCE INPUT, CD2 :DIGITAL 1” appears on
the Front Panel Display. Refer to figure 7.
Record any changes made to the various inputs from
the default settings in the “Input and Power Control
Settings” chart for future reference.
5. To exit from the Setup Mode, press the INPUT
CONTROL and the Front Panel Display will revert
back to its normal display.
The MA7900 provides the ability to reassign High
Level Inputs (non-Phono) to either the Balanced Input
or one of the two Digital Inputs.
In the first example, the CD Input will be reassigned
from the unbalanced CD (RCA Jacks) to the BAL -
ANCED Connectors (XRL).
Notes: 1. Any one of the Default Inputs may be swiched
Off. If any input is switched Off its name will
no longer appear on the Front Panel Display
when using the INPUT Control, nor is it acces-
sible with the Remote Control.
2. The Phono MC (Moving Coil) and MM (Mov-
ing Magnet) Input are designed for connection
of a turntable only and thus non-reassignable.
However, the Phono Inputs may be switched
Off.
3. Only one Input may be assigned at a time to
the Balanced or Digital (1 or 2) Connectors. If
an already assigned Balanced or Digital con-
nector is to be reassigned to a different Input,
the Input currently assigned to the connector
first needs to be changed. It can be temporarily
set to Off, RCA connector, available Balanced
or available Digital connector.
1. Press and hold the INPUT CONTROL until the
Front Panel Display indicates the Setup Mode is
active. Then rotate the INPUT CONTROL and
select the Setup Menu item “SETUP: SOURCE
INPUT, CD :RCA”. Refer to figure 4.
Figure 5
SETUP: SOURCE INPUT
CD : BALANCED
Figure 4
SETUP: SOURCE INPUT
CD : RCA
Figure 6
SETUP: SOURCE INPUT
CD2 : RCA
SETUP: SOURCE INPUT
CD2 : DIGITAL 1
Figure 7
Source Input Reassignment Firmware Version
Figure 2
MA7900 V_.__
S/N: _______
Figure 3
McIntosh USB Audio
V_.__