BDS 275_277_575_577 - Harman Kardon Audio Service Manual (repair manual). Page 11

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10
BDS
Connections 
Connections
CAUTION: Before making any connections to the BDS receiver, ensure that the 
receiver’s AC cord is unplugged from the receiver and the AC outlet. Making 
speaker connections with the receiver plugged in and turned on could damage 
the speakers.
your BDs receiver has color-coded speaker terminals:
BDS 275/BDS 277
white:
left channel (+)
red:
right channel (+)
black:
(–) on both channels
BDS 575/BDS 577
white:
front left (+)
red:
front right (+)
blue:
surround left (+)
gray:
surround right (+)
green:
center (+)
black:
(–) on all channels
Be sure to connect each speaker identically: (+) on the speaker to (+) on the receiver or 
amplifier, and (–) on the speaker to (–) on the receiver or amplifier. Miswiring one or more 
speakers results in thin sound, weak bass and a poor stereo image. 
CAUTION: Make sure the (+) and (–) bare wires do not touch each other or any 
metal object on the receiver’s rear panel. Touching wires can cause a short circuit 
that can damage your receiver or amplifier.
Connecting the Speakers
Surround Right 
Speaker*
Surround Left 
Speaker*
* Used only with BDs 575/BDs 577 receivers
Front Left 
Speaker
BDS Receiver 
(BDS 575 shown)
Center 
Speaker*
Front Right 
Speaker
Connecting the Receiver Terminals
A. Unscrew Cap
B. Insert Bare Wire
C. Tighten Cap
Connecting a Powered Subwoofer
Use a mono RCa audio cable to connect the BDs receiver’s subwoofer Output connector 
to your powered subwoofer; consult your subwoofer’s user manual for information about 
making connections to your subwoofer.
Mono RCA  
Audio Cable 
(not supplied)
Powered  
Subwoofer
IMPORTANT: Do not plug the subwoofer’s AC power cord into an AC outlet at this time.
Connecting the FM Antenna
Connect the supplied antenna to the fM antenna connector, as shown in the illustration 
below. fully extend the antenna wire and move it to different positions until you get the 
best reception of your favorite stations. 
FM Antenna 
(supplied)
Harman Kardon
BDS X75 + X77 Service Manual
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