Unbalanced Operation - Bose B1500 Owner's Manual

4. Installation

Unbalanced operation

The amplifier is designed to operate with fully balanced equipment and ground loops
or loss of performance may be experienced if connected to unbalanced sources. If it is
unavoidable however, the following wiring should be used. The cable should still be
twin core plus screen.
Pin No.
1
2
3
Screen (ground) Connect to ground at unbalanced equipment or float
Hot (signal +)
Cold (signal -)
B1500 shown only
GND
(Shield)
+ -
GND
(Shield)
+
GND
Unbalanced
Source
Channel A
Connection
PIN1 - Screen (see note)
PIN2 - Hot (signal +)
PIN3 - Cold (signal -)
+ -
Gnd/Shield +
Unbalanced
Either connect to source
Source
ground or leave floating
(no connection)
Channel B
GND
(Shield)
GND
(Shield)
GND
9