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The system gain should then be adjusted on the BLT Balanced Line Transmitter, other other balanced line audio source. For the pin configuration, see the diagram below: BAIANCED + left Signal 13 ( INSTALLATION STEP 3 ] WIRING POWER AND GROUND To ensure maximum output from your RUBICON amplifier, use high quality, low- loss power and ground cables and connections. The RUBICON amplifiers will accept up to 4 gauge power and ground cables. Determine from the chart below the minimum gauge power and gr