Page 20
724-746-5500 | blackbox.com
Chapter 3: System Connection
Figure 3-4. Mic input, balanced connection.
LINE input
LINE input has low frequency characteristics and wide frequency response.
When switched to “LINE,” the microphone input is used to connect to line audio or
wireless microphone output. There are two different connection methods:
1. Unbalanced connection:
“+” and “ ” connect to ground, and “-” connects to signal.
“-” and “ ” connect to ground, and “+” connects to signal.
Figure 3-5. LINE input, unbalanced connection.
2. Balanced connection: “+” connects to positive, “-” connects to negative and “ ”
connects to ground.