9
Making Connections
Phono/Unbalanced Inputs
Unbalanced Inputs such as the two PHONO INPUTS
and UNBALANCED INPUTS 1 through 6 use
RCA/phono cables (see Figure 01) to connect the
MA12000 to other components. Traditionally, the
red connector is used to connect the right channel.
You are free to break tradition but keep the channels
straight or left and right might be reversed.
The MA12000 can accept the analog input from a
wide variety on components such as CD players,
tuners, and turntables. There are two sets of
unbalanced inputs dedicated for turntable
connections which allow customization of the input
level. See “Phono Adjustments” on page 28 . The
signal strength from phono cartridges vary and are
lower than the line level received from most other
components. The turntable will also have a ground
connection which should be secured to the
MA12000’s GND Binding Post to eliminate ground
hum. Turn the Binding Post counterclockwise to
loosen and attach the ground wire. Turn the Binding
Post clockwise to secure the ground connection.
The MC PHONO INPUT should be used for low
output Moving Coil Cartridges. The MM PHONO
INPUT should be used for Moving Magnet and high
output Moving Coil Cartridges.
Balanced/XLR Input and Output
The BALANCED INPUT allows a source to be
connected using XLR (balanced) cables if the source
has this option.
XLR cables can also be used to connect the
MA12000 to an external amplifier. OUTPUT 2 has a
pair of XLR connectors labeled R for Right and L for
Left. To use the XLR output, connect the OUTPUT
2 R jack to the right input of your amplifier and
OUTPUT 2 L jack to the amplifier’s left input.
Below is the Pin configuration for the XLR Balanced
Input and Output Connectors on the MA12000.
Refer to the diagrams for connections:
PIN 1: Shield/Ground
PIN 2: + Signal
PIN 3: - Signal
RS232
The RS232 jack is used to connect the MA12000
to automation controller devices with RS232
connectors. To utilize this feature, you will need an
appropriate RS232
Data Cable. The
RS232 Data Cable
should be an 1/8
inch (3.5mm) stereo
mini phone plug to
a subminiature DB9
connector.
RS232 DB9 Connector Pin Layout
1. N/C (no connection)
6. N/C
2. Data In (RXD)
7. N/C
3. Data Out (TXD)
8. N/C
4. N/C
9. N/C
5. Gnd
Typical RS232 settings are:
•
8 data bits, no parity and one stop bit
•
Baud rate fixed at 115,200 bits per second
The baud rate can be changed in the Setup. See
“Comm Port Baud Rate” on page 24.
Wired IR Input
The IR Input allows an external IR receiver to be
attached to the MA12000. The Input is labeled IR
IN. By attaching an IR receiver using a 3.5mm cable
(Figure 09), the MA12000’s Remote Control can be
used in another location without a line-of-sight to the
MA12000’s front IR sensor.
IR Data
Control
Ground
N/C
If using an external IR receiver for the MAIN ZONE
in the same room as the MA12000, you may wish
to
disable the front IR sensor
. This will avoid
potential timing issues of receiving the Remote
Control’s commands from two different Inputs. The
Figure 01– RCA/Phono cables
PIN 1
PIN 2
PIN 3
Figure 02– XLR pin diagram
Figure 03– Mini plug for RS232
connection
Data In
(DB9-pin2)
Ground
(DB9-pin5)
Data Out
(DB9-pin3)
Figure 04– DB9 connector pin layout
Figure 05–
IR 3.5mm connector
