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Post by RicFoxx on Apr 17, 2014 10:00:02 GMT -6
So Im calibrating my console to my digital gear (Avid Omni/Burl B2) and on my board using a signal generator -18 = 0VU on board. But my board sounds good when pushed a little...maybe +12 to +14. It has a button by the VU that is labeled -10 and when depressed that is where I get my 0db reading (with signal from daw.) Now this should read -6 or -8 going back into Burl AD right???
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Post by Deleted on Apr 17, 2014 10:14:10 GMT -6
this is a good question for GroupDIY. i'd ask it there, personally.
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Post by svart on Apr 17, 2014 10:24:11 GMT -6
Well, one is -10dBV (note the type of decibel) and the other is +4dBu. Your console is probably designed around one of these numbers. Usually pro audio is designed around +4dBu. Sometimes consoles have pads built in that cut the +4dBV level to -10dBu.
V is referenced to the Volt.
U is referenced to nothing, it means "unterminated".
dBV is usually measured unbalanced.
dBV is always measured balanced.
In engineering terms, there is nothing to compare between the two, since U means there is no reference point at all because terminating this with different loads would yield completely different numbers.. It also means that there is NO standard for these and the designers are not inclined to match their levels with these numbers at all!
However, if one only looks at voltage comparison while ignoring that there is no reference load, then the difference is around 12dB.
Anyway, I'm not really sure what you are trying to do, or more importantly, why.. If it sounds good pushed, then leave it there and have fun with it.
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Post by RicFoxx on Apr 17, 2014 14:41:58 GMT -6
Well, one is -10dBV (note the type of decibel) and the other is +4dBu. Your console is probably designed around one of these numbers. Usually pro audio is designed around +4dBu. Sometimes consoles have pads built in that cut the +4dBV level to -10dBu. V is referenced to the Volt. U is referenced to nothing, it means "unterminated". dBV is usually measured unbalanced. dBV is always measured balanced. In engineering terms, there is nothing to compare between the two, since U means there is no reference point at all because terminating this with different loads would yield completely different numbers.. It also means that there is NO standard for these and the designers are not inclined to match their levels with these numbers at all! However, if one only looks at voltage comparison while ignoring that there is no reference load, then the difference is around 12dB. Anyway, I'm not really sure what you are trying to do, or more importantly, why.. If it sounds good pushed, then leave it there and have fun with it. Im just trying to make sure gain staging is right as Im an inexperienced engineer when it comes to these things. Trying to achieve some consistency with levels. Ive heard that most analog equipment is made to work best at 0VU (please correct me if I'm wrong) so when running Preamp/compressor/Line ins on board I want to make sure Im achieving maximum fidelity. So my board is developed to work at +4dBu then why is it I need to depressed the -10 dBv button to achieve 0VU coming from DAW at -18dBv?? Please excuse my ignorance to this as I have very limited experience with this. |
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Post by wiz on Apr 17, 2014 14:53:03 GMT -6
what is the console?
cheers
Wiz
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Post by RicFoxx on Apr 17, 2014 15:18:22 GMT -6
Oram Series 8T
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Post by cowboycoalminer on Apr 17, 2014 18:03:13 GMT -6
Ric
I usaly try to run a mix out of my console at around +4. That's a bit over 0db. This seems the sweet spot for mine. As you know, yours may vary. And -8 digital ref is about where the B2 lands on peaks. Again, I feel like that's the sweet spot for signal to noise for me and it leaves plenty of headroom for mastering. I guess if yours is peaking not above 0 on the console, it should print somewhere lower than that. Which is just fine if that's where your console sounds best.
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Post by RicFoxx on Apr 17, 2014 21:41:07 GMT -6
Thanks Cowboy!
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