Installing the Hardware
24
Connecting to an External Speaker
You can use an external speaker to monitor the radio from a different part of
your boat or in a noisy environment. If you adjust the
VOLUME-PWR
knob on
the radio, it will also adjust the external speaker volume.
The UM423 AM supports an external speaker with the following
specifications:
•
Minimum impedance of 4 Ohms
•
Minimum power handling of 10 Watts
Disconnect the
1.
accessory cable
from the accessory connection on
the radio.
Connect the BLACK wire of the
2.
accessory cable
to the GROUND
WIRE of your external speaker.
Connect the RED wire of the
3.
accessory cable
to the POSITIVE (+)
WIRE of your external speaker.
Be certain all wire connections are secure and that all open wires are
4.
adequately covered.
If you are finished connecting all external accessories, line up the
5.
arrows on the side of the
accessory cable
and connector and connect
the
accessory cable
to the
accessory connector
on the back of the
UM423 AM.
NOTE: To extend the life of the radio, use waterproof tape to seal
electrical connections.
UM423 AM.indd 24
28/9/11 11:59:07 AM
