The problem I and others have had, is that when you are running a V3 analog, you only want the meters to flash the first amber. This results in a very low digital signal via the SPDIF to the other deck. While your math may be correct, it presumes running the V3 hot, which you do not want to do when using it for analog out.
LED Color............. | dBFS................... | Balanced Analog Out (dBu) |
Red | 0 | +25 |
Amber | -3 | +22 |
Amber | -6 | +19 |
Amber | -9 | +16 |
Green | -12 | +13 |
Green | -15 | +10 |
Green | -21 | +4 |
Green | -27 | -2 |
4022's -> V3 analog -> 722 line-in, at 0db gain
with the above rig, and settings, I can only light up the first ambers and still maintain a wee bit of headroom. This brings me up to -4 / -3 digital peak level. If I light up two ambers (2nd set of non-greens) i need to run attenuation of the 722.
Jason --
From the numbers, it sounds like you've got it right. I just got my new (used) 722 today ;D -- so I'll start playing around with it this weekend. I'd like to be able to do just what you are saying and get the V3(digi)>MT and V3(ana)>722 dialed in so I can do some A/D comparisons without needing to normalize levels in post.
Let us know what you find out!!
Wonder what specifics internally make the 722 AD sound slightly better then the Lunatec?