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Old 03-03-2021, 09:38 PM   #16
ashcat_lt
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Join Date: Dec 2012
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Correct me if I'm wrong, but I think the PPM is kind of arbitrary. Like, if you're looking at the VU and make that align with your other VUs, the PPM can just go where it wants. It says the same thing just plus or minus some offset amount. I think if it was me, I'd set it to match either my ADC or DAC specs (they don't always match!), but not for any good reason since I'm almost never interfacing with outboard gear whose meters matter to me. If you don't want to go digging through manuals, just set it so that 0dbVU = +4dbu = -18dbFS, which would make 0dbu = -22dbFS
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