Autocom Pro MDX 1400 sidechain

[The DuoBros]

Hi, i recently buy Autocom Pro MDX 1400,i read the manual but it doesn't say anything about setup sidechaining.
There is very little about it on the internet.
What i would like to know is how to sidechaing vocals with music.When I sing I want to reduce loudness of music from the mixer(sidechain vocal/ music)
Does anyone know how to connect it ....?

Thanks in advance

[pvannatto]

Hi @The DuoBros, welcome to the forum. It's been at least 15 years since I've used an MDX1400. But I do have the manual (attached). See pages 20-22 for the sidechain feature.

[The DuoBros]

Thank you for help. I have read user manual but there is no pictures how to connect something.
This Autocom compressor has send and retun sidechain inputs, i connected dynamic microphone in sidechain retun and music from mixer to compressor input and then compressor output to PA speaker and i didn't get a good result. Maybe i do something wrong?