Thu Apr 04, 2024 11:32 am
As some others have already explained, it's due to the difference in line levels. But I wanted to add to that.
Line level on professional equipment (like your X32) is +4 dBu.
Line level on consumer equipment (like the ATEM) is -10 dBV.
Besides the different numbers (+4 vs. -10), please also note the different units (dBu vs. dBV). dBu is a scale where 0 dBu is equal to 0.775 Volt. This was deliberately chosen to be equal to 0 dBm and this is the voltage required to dissipate 1 mW of power in a 600 Ohm resistor (this comes from the telecom world). On the other hand, on the dBV scale 0 dBV is equal to 1 Volt. Because of the different scales the difference between +4 dBu and -10 dBV is about 12 dBu.
So you will need to attenuate the output of your X32 mixer by 12 dBu. If you still like to run your main L/R outputs at it's normal level you can use the AUX outputs on the X32 and apply the 12 dBu attenuation there so that 0 dBu on the meters of your X32 mixer is equal to 0 dBV on your ATEM.