Mapping Stereo Links

Stereo-collage---blog-01

The A360 and A320 Personal Mixers support 16 stereo mix buttons (that’s 32 channels in all). When connecting and configuring inputs, it’s important to understand how the inputs get mapped to the mix channel buttons. It’s easiest to view each input device as having stereo input pairs (channels 1-2, 3-4, 5-6, etc.). The odd numbered channel feeds the left side of a stereo channel; the even number feeds the right side. As with most other devices that support mono/stereo input channels, if you don’t need a stereo input for a particular channel, plug the source into the left (mono) input and ignore the right side, leaving it unused. In real-world situations, most personal mixing systems will use a mixture of mono and stereo sources.

The rules described here are in effect when an A360 Personal Mixer is used in its Default or Custom modes, and when an A320 Personal Mixer is used in its 32-channel mode. Switch an A360’s mode using the 4-position switch on its rear panel. The A320’s mode is changed with a key combination applied during power-up. Hold the Mute button plus the Channel 2 button while powering up the unit to set it to the 32-channel mode. (Note that the A320 ships in 16-channel mode; you can return the A320 to this mode by holding Mute plus Channel 1 during power up.)

When channels are stereo linked, the channels act as a stereo pair, occupying one mix channel button on the A360/A320. The example table below shows the mapping of 32 input sources to an A320’s channel buttons. This is equivalent to the A360’s Default mode. (Note that the analog AN-16/i v.2 Input Module is used for the example, but any valid combination of input devices, including a Dante network, can be used).

stereo input table

If the channels are not stereo linked, then only the odd (left) input channel is utilized by the Personal Mixer, and the even (right) input channel is ignored even if you connect an audio source to that input.

input list

Note that this mapping applies to the A360 Personal Mixer as well, but the A360 can support even more sources (up to 64) and it also has the two special channels, Dual Profile Channel and Ambience, that can also support stereo audio from the network. The A360 can also take advantage of custom channel mapping by using the A360 Channel Manager software.

We’ve created a simple input list spreadsheet that you can use to keep track of the mono/stereo input sources in your audio system. Download it for free.

 

 

 

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  1. Beyond 16 Channels, Part 3 : Aviom Blog | June 20, 2017

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