6
Output Terminal Connector
When cables with spade lugs are used for Loudspeaker
Connection, the spade lugs need an
opening of at least 3/10 inch (7.6mm)
XLR Connectors
Below is the Pin configuration for the XLR Balanced
Input Connectors on the MC1502. Refer to the
diagram for connection:
PIN 1: Shield/Ground
PIN 2: + Output
PIN 3: - Output
Power Control Connector
The Power Control Output Jack sends Power On/
Off Signals (+12 volt/0 volt)
when another McIntosh
Component is connected. The
Power Control Output will in
turn provide a +12 volt Output
Signal with a current up to 25
mA. An additional connection is for controlling the
illumination of the MC1502 Small Signal Tubes when
connected to a compatible McIntosh Preamplifier or
A/V Control Center Power Control Output. A 3.5mm
stereo mini phone plug is used for connection to the
Power Control Output.
Power
Control
Illumination
Control
Ground
1. For additional connection information, refer to the
owner’s manual(s) for any component(s) connected
to the MC1502.
2. Apply AC Power to the MC1502 and other
McIntosh Component(s) only after all the system
components are connected together. Failure to do
so may cause a malfunction of system operations
as the Microprocessor’s Circuitry inside the
components is active when AC Power is applied.
3.
The MC1502 includes an Auto Off Power Save
Feature and the default setting is enabled.
For
additional information including how to disable it,
refer to page 13.
4. When Power Amplifier Protection Circuitry
(Sentry Monitor) of the MC1502 has activated
the Small Vacuum LED Illumination will start
flashing. The AC Power to the MC1502 needs to be
switched OFF at that time.
5. When the Power Transformer has overheated
due to improper ventilation and/or high ambient
operating temperature, AC Power is removed from
the MC1502 and the Standby LED flashes.
6. For the best performance and safety, it is important
to always match the impedance of the Loudspeaker
to the Power Amplifier connections. Refer to pages
10 and 11.
Note: The impedance of a Loudspeaker actually
varies as the Loudspeaker reproduces different
frequencies. As a result, the nominal impedance
rating of the Loudspeaker (usually measured
at a midrange frequency) might not always
agree with the impedance of the Loudspeaker
at low frequencies where the greatest amount
of power is required. Contact the Loudspeaker
Manufacturer for additional information about
the actual impedance of the Loudspeaker before
connecting it to the McIntosh MC1502.
7. When discarding the unit, comply with local rules
or regulations. Batteries should never be thrown
away or incinerated but disposed of in accordance
with the local regulations concerning battery
disposal.
8. For additional information on the
MC1502 and other McIntosh Products
please visit the McIntosh Website at
www.mcintoshlabs.com.
Connector and Cable Information
General Information
PIN 1
PIN 2
PIN 3
3/10 of an inch
(7.6millimeters)
