Quote:
Originally Posted by
SoundEng1
β‘οΈ
Is this info in the manual? I Thought it was about 3 o clock the 8200 fader.
Question for 8200 Users,
Do you guys mix with the fader open all the way up or, do you calibrate it to 0VU?
I'm pretty sure all passive summing boxes inputs will be at unity fully open.
What you're confusing is unity at input vs unity at output.
Assume that there are no active parts in the input section - the knob is just like the volume pot on a guitar - zero attnuation is maximum volume and infintie attnuation is off. Then unity is fullly open.
Now, run a 0dBvu tone in to a channel panned up the middle and set your ouput to show zero dB. Now send that same signal to every input sumultaneously and what will your output show? Way above 0dB VU becuase all of the signals have been summed and there's an increase.
WIth passive summing the output is a make up gain - think about the Folcrom that needs a mic pre on the back end. Each input stages is resistored down, summed creating the volume boost and then boosted more if necessary - at least depending on the design.
So the ouput knob is not like a master fader with zero attenuation at the top. On the passive summing boxes, it's exactly the opposite.
The Chandelr works that way. It sounds like the API works that way. The SPL has no input level control, so I'd be it works that way. Neve is known for passive summing, so there's a good chance that their box works that way (without the faders).
I looked through the API manual, and I didn't see anything explanations of unity. It reccomend starting with the knobs as about 2 o'clock, but it's recommended use doesn't make that unity.
I've asked a few people - one being a high end gear designer who wasn't involved and doesnt' make a summing box. He immediate response was that he didn't think it would make a significant diffference, that he was sure that people used pots that had no effect on the tone.
I trust him to know more about this than me, but that does contradict what I'm used to hearing about pots. Acutally that's not true, if he had said it made no difference as oppsed to "significant difference" then it would be true.
But the more important issue is that we were listening to the boxes relative to each other. Supposed one box had 2 dB more low end than another. Does that mean it's boosting the low end or the other is cutting or some of each. Or, is it boosing the low end by 12dB and the other only by 10db?
The way the A/B was set up, I think people generally get an idea of the tone of each box, but if one seems too anything compared to another, there was no way of knowing which was truer to the source.
So, it didn't tell us which was the best sounding box, it told us which had more of certain tones or possibly which had less of certain tones than the others.
You'd really have to have two protools systems to properly A/B.