4
Power Control Connectors
The MR89 Power Control Input/Output Jacks receive/
send Power On/Off Signals
when connected to other
McIntosh Components. A 1/8
inch stereo mini phone plug
is used for connection to the
Power Control Input/Output on
the MR89.
Note: The Data and Power Control Connecting Cable
is available from the McIntosh Parts Department:
Data and Power Control Cable Part No. 170-202
.
Six foot, shielded 2 conductor, with 1/8 inch stereo
mini phone plugs on each end.
Data and IR Input Port Connectors
The MR89 Data In Port receives Remote Control
Signals. A 1/8 inch stereo mini phone plug is used for
connection. The IR Port also use a 1/8 inch stereo mini
phone plug and allow the connection of other brand IR
Receivers to the MR89.
Data
Signal
N/C
Data
Ground
IR Data
Control
Ground
N/C
RAA2 Connectors
Pin No. Wire Color
Pin No. Wire Color
1. White/Orange
6. Green
2. Orange
7. White/Brown
3. White/Green
8. Brown
4. Blue
5. White/Blue
*Cable outer shield
Pin 1
Pin 1
Pin 8
Pin 8
*Cable outer shield
Note: The RAA2 Connecting Cable is available from the
McIntosh Parts Department:
RAA2 Antenna Cable Part No. 171844
Power
Control
Ground
Lighting
Control
Twenty foot, shielded 8 conductor, with a shielded RJ45
connector on each end.
Introduction
The MR89 AM/FM Tuner is an elegant instrument
for superb reception from Radio Stations. The MR89
uses the latest in technology for the best sound quality,
along with a two-line display for convenient opera-
tion and comprehensive station information. Meters
provide real time insight into the audio program.
Performance Features
• Special FM RF Circuitry
The MR89 RF Circuitry receives strong local FM
Station Signals without distortion and receives
even the weakest of FM Signals with low noise.
• RAA2 External AM Antenna
The RAA2 External AM Antenna allows place-
ment of the AM Antenna for the best reception.
• Preset Stations and Permanent Memory
The MR89 Tuner stores up to twenty AM and FM
Station presets and they are retained in Permanent
Memory.
• Balanced Outputs
The Balanced Outputs allow connection of the
MR89 to a Preamplifier using long cable lengths
without a loss in sound quality.
• Digital Audio Outputs
There are Coaxial and Optical Digital Outputs for
external decoding of the PCM Signal.
• Multifunction Fluorescent Display
The Front Panel Display facilitates tuning, setup,
and provides signal information while a full comple-
ment of RS232 control with metadata support makes
the MR89 the go-to multi-format broadcast audio
source for today’s whole-house systems.
• Information Service
The MR89 will indicate various text information
such as Station Call Sign, Music Genre, Artist
Name and Song Title when transmitted by the
Radio Station.
• Remote Control with External Sensor Input
The Remote Control provides control of the MR89
operating functions and other McIntosh Source
Components. Enjoy your McIntosh System from
other rooms in your home by connecting external
sensors.
• Power and Lighting Control Input
Power control inputs allow the MR89 to receive
power on/off signals from other McIntosh compo
-
nents. While powered, the MR89 meter lighting
can be enabled or disabled by other components.
• Power Control Output
A Power Control Output connection for conve-
nient Turn-On of McIntosh Power Components
and Accessories is included. The Power Control
Output follows the state of the front-panel standby
pushbutton, the power control input, and the
RS-232 and IR power commands.
• Special Power Supply
Fully regulated Power Supplies and a special
R-Core Power Transformer ensure stable noise
free operation even though the power line varies.
• Gold Plated Connectors
The MR89 Digital and Analog Audio Connectors
are gold plated for superior corrosion resistance
and high electrical conductivity.
• Solid State Front Panel Illumination
The even Illumination of the Front Panel and
meters is accomplished by extra long life Light
Emitting Diodes (LEDs).
• Glass Front Panel and Super Mirror Chassis Finish
The famous McIntosh Illuminated Glass Front
Panel and the Stainless Steel Chassis with Super
Mirror Finish ensures the pristine beauty of the
MR89 will be retained for many years.
