Originally Posted by Robert B
or to feed the audio 8channel to the HD621 and have it downmix channel 6 to MHR.
No, this is not possible, the HD621 does not down mix.

When used with an 861v4 or G series process the HD621 must be set to 6 channel otherwise channel information will be lost.

Only the 861v6 and higher support 8 channel input via MMHR (note this is not SpeakerLink) but does use an RJ45 connector).

Regards,
Carl

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