Question for Bob on ADA8000 Gain settings

[Jeff Scott]

Bob: in a previous post you mentioned that when setting up the gain on your ADA8000's that you increase the gain until you see the signal clip on the ADA's indicator...and then back off 6 db. I can feel that the knob has around 20 "indents" or "notches" when you turn it it's full rotation.How many "notches" is 6db? Would that be around 2 indents / notches?

[905shmick]

The ADA8000 manual quotes:

Microphone Inputs
Gain Range : +10 to +60 dB

Line Inputs
-10 to +40 dB

So that would be 50 dB of gain, divided by 20 notches _should_ equal 2.5 dB per notch.

[Jeff Scott]

That's what I thought.....I didn't know if the control was linear and that you could in fact divide the gain settings up like that

[kruntz]

Bob: in a previous post you mentioned that when setting up the gain on your ADA8000's that you increase the gain until you see the signal clip on the ADA's indicator...and then back off 6 db. I can feel that the knob has around 20 "indents" or "notches" when you turn it it's full rotation.How many "notches" is 6db? Would that be around 2 indents / notches?

It's not so simple... :-)
http://www.sawstudiouser.com/forums/...1&postcount=13

[905shmick]

Should be easy enough to see via the meters in SAC or with RME's digicheck. Increase the gain by one notch and note the increase on the meter.

[Bob L]

You do not have to care or try to be so exact... find a normally good trim position and then back it down a few notches... you can use the SAC input meters for accuracy if desired... the gain controls on each Behringer may be slightly different...

All you are trying to do is leave yourself enough headroom on each chan so you will not be needing to make constant adjustments to keep signals from clipping as the performers shift around their performance during the show.

Then you have plenty of control just using the attenuator control in SAC (which can add 20db of gain as well as attenuate).

Bob L