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Connecting Components
The MHA150 has the ability to automatically switch
power On/Off to McIntosh Source Components via
the Power Control connection.
The connection instructions below, together with
the MHA150 Connection Diagram on the next page
is an example of a typical audio system. Your system
may vary from this, however the actual components
would be connected in a similar manner. For addition-
al information refer to "Connector and Cable Informa-
tion" on page 4.
Note: When the MHA150 is being added to an existing
Audio (or Audio/Video) System, please proceed to
page 12. If the MHA150 will be used with an exter-
nal Power Amplifier, please refer to page 13.
Power Control Connections:
1. Connect a Control Cable from the MHA150 PWR
CTRL (Power Control) OUT Jack to the Power
Control In Jack on the Tuner.
2. Connect a Control Cable from the Tuner Power
Control Out Jack to the Disc Player Power Control
In Jack.
3. Connect any additional McIntosh Components in
a similar manner, as outlined in steps 1 thru 2.
Optional Audio Connections:
4. Connect the Audio Cable from the MHA150 UN-
BAL 1 (or BALANCED) L & R connectors to the
Disc Player Fixed Audio Output Jacks.
5. Connect any additional Components in a similar
manner, as outlined in step 4.
Digital Audio Connections:
6. Connect a "DIN Cable-Twisted Pair" cable (sup-
plied with a MCT Transport) from the MHA150
DIGITAL AUDIO MCT INPUT connector to the
SACD/CD Transport DIN Output connector.
7. Connect any additional Components in a similar
manner, as outlined in step 6.
10
Optional USB Connection:
8. Connect a USB cable with (type A to type B) con-
nectors from the MHA150 USB Input to an avail-
able USB connector on a Computer.
Output Terminals
When connecting the Loudspeaker Hookup Cables to
the MHA150 Output Terminals please follow the steps
below:
1. Rotate the top of the Output Terminal Post coun-
terclockwise until an opening
appears. Refer to figures A and
B.
2. Insert the Loudspeaker hookup
cable into the Output Terminal
Post opening or the cable spade
lug around the center post of
the Output Terminal. Refer to
figure C.
3. Rotate the top of the Output
Terminal Post clockwise until it
is finger tight. Refer to figure D.
4. Place the supplied McIntosh
Wrench over the top of the Out-
put Terminal and rotate it one
quarter of a turn (90° ) to secure
the Loudspeaker Cable Connec-
tion. Do not over tighten. Refer
to figure E.
How to Connect Optional Loudspeakers
Caution: Do not connect the AC Power Cord to the
MHA150 Rear Panel until after the Loudspeak-
er Connections are made. Failure to observe
this could result in Electric Shock.
Warning: Loudspeaker terminals are hazardous live and
present a risk of electric shock. For additional
instruction on making Loudspeaker Connec-
tions contact your McIntosh Dealer or McIn-
tosh Technical Support.
The McIntosh MHA150 Power Amplifier Circuitry is
designed for a single 8 ohms Loudspeaker connected
to the Right and Left Output Terminals.
The recommended cable size is shown below:
Cable Distance vs American Wire Gauge (Size)
Loudspeaker
Impedance
8 Ohms
1. Prepare the Loudspeaker Hookup Cable for attach-
ment to the MHA150:
Bare wire cable ends:
Opening
Carefully remove sufficient insulation from the
Figure B
Figure A
cable ends, refer to figures F, G & H. If the cable
is stranded, carefully twist the strands together
as tightly as possible.
Figure C
Figure D
Notes: 1. If desired, the twisted ends can be tinned
Figure E
Banana Plugs are for use in the United States and
Canada only:
2. Attach the previously prepared bare
wire cable ends into the banana plugs
and secure the connections. Refer to
figure I.
25 feet
50 feet
100 feet
(7.62 meters)
(15.24 meters)
(30.48 meters)
or less
or less
or less
16AWG
14AWG
12AWG
Figure F
Figure G
Figure H
with solder to keep the strands together.
2. The prepared bare wire cable ends may be
inserted into spade lug connectors.
3. Banana plugs are for use in the United
States and Canada only.
Figure I
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