Owner's Manual

10
When connecting the Loudspeaker Hookup Cables to
the XR50 Loudspeaker Input Terminals please follow
the steps below:
1. Rotate the end of the Input Ter-
minal Post counterclockwise
until an opening appears. Refer
to gures A and B.
2. Insert the Loudspeaker hookup
cable into the Input Terminal
Post opening or the cable spade
lug around the center post of the
Input Terminal. Refer to gure
C.
3. Rotate the end of the Input Ter-
minal Post clockwise until it is
nger tight. Refer to gure D.
4. Place the supplied McIntosh
Wrench over the end of the
Input Terminal and rotate it one
quarter of a turn (90° ) to secure
the Loudspeaker Cable Connec-
tion. Do not over tighten. Refer
to gure E.
Caution: The AC Power Cord should not be connected to
the Amplifier until after the Loudspeaker Con-
nections have been made. Failure to observe
this could result in Electric Shock.
1. For illumination of the XR50 Loudspeaker McIn-
tosh Name Plate, connect a Power Control Cable
from the Power Amplifier (or Integrated Ampli-
fier) Power Control Output to the XR50 POWER
CONTROL IN.
2. Connect a second Power Control Cable from the
first XR50 Loudspeaker POWER CONTROL
OUT to the next XR50 POWER CONTROL IN.
3. Connect any additional McIntosh Loudspeakers
with illuminated McIntosh Name Plates in a simi-
lar manner, as outlined in steps 1 and 2.
When connecting a XR50 Loudspeaker to an ampli-
fier it is very important to use cables of adequate size,
so there is little to no power loss in the cables. The
size is specified in Gauge Numbers or AWG (Ameri-
can Wire Gauge). The smaller the Gauge number, the
larger the wire size:
Loudspeaker Cable Distance vs Wire Gauge Guide
Loudspeaker
Impedance
25 feet
(7.62 meters)
or less
50 feet
(15.24 meters)
or less
100 feet
(30.48 meters)
or less
2 Ohms
12AWG 10AWG 8AWG
4 Ohms
14AWG 12AWG 10AWG
8 Ohms
16AWG 14AWG 12AWG
4. Prepare Loudspeaker cables by choosing one of the
methods below:
Bare wire cable ends:
Carefully remove sufficient insulation from
the cable ends, refer to figures 12, 13 & 14. If
the cable is
stranded, care-
fully twist the
strands together
as tightly as
possible.
Notes: 1. If desired, the twisted ends can be tinned
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.
Banana Plugs are for use in the United States and
Canada only:
5. Attach the previously prepared bare wire cable
ends into the banana plugs and secure the connec-
tions. Refer to figure F.
6. Rotate the top of the Output Terminal
Post clockwise until it is nger tight.
Refer to gure G. Then using the
McIntosh Wrench, rotate the top of the
Output Terminal one quarter of a turn
(90° ). Do not over tighten. Refer to
gure E.
7. Referring to figure H and the illus-
tration on the next page, connect the
Loudspeaker hookup cables with ba-
nana plugs into the hole
at the end of the terminal
to the XR50 Negative (-)
Input Terminal and Posi-
tive (+) Input Terminal
Note: It is important to maintain the correct polar-
ity at both ends of the Loudspeaker cables.
8. Connect the other end of Loudspeaker cables com-
ing from the XR50 Negative (-) Input Terminal to
the Left Channel COM (-) Output Terminal of the
Amplifier.
9. In a similar manner, connect the Loudspeaker
cables coming from the XR50 Positive (+) Input
Terminal to the Left Channel 8 ohm (+) Output
Terminal of the Amplifier.
10. Connect the second XR50 Loudspeaker in a
similar manner to the Amplifier Right Channel
Terminals.
How to Connect
Figure 12
Figure 13 Figure 14
Figure A
Opening
Figure B
Figure C Figure D
Figure E
Input Terminals
Figure F
Figure H
Figure G
Figure F
Figure H