Connecting Unbalanced Audio To Or From An RDL Product

For most of our products the audio signal input and output wire is connected to the input or output positive (+) terminal. The audio return shield is connected to signal ground. The unused negative (-) input terminal is jumpered to signal ground. The unused negative (-) output terminal has no connection or may be used as a second unbalanced signal source. The negative (-) output terminal is out of phase with the positive (+) output. However with the STM-2X on the input side only, the signal wire is run to the negative (-) and the unused positive (+) is grounded.