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noise floor when mixing analogue
Old 28th July 2005
  #1
Lives for gear
 
lowswing's Avatar
 
๐ŸŽง 15 years
noise floor when mixing analogue

I Just started to mix a pop/jazz album , it was recorded on cubaseSX and SX will also be the "tape" (converter are RME and Swissonic at 24/44.1).
I decide to mix it analogue on a D&R Orion using all analogue outboard (vintage and new): 1176, La2a, adl, cadac eq, Telfunken Eqs,vintage dbx compressors,h3000, tc reverbs etc...
The mix out from the desk go back into a spare stereo channel on cubase.
I notice that when there is no playback still the desk send noise for about -60dbfs to -44dbfs (depend on how many outboard and channels is on the mix) the noise sound like hiss and a very quit hum (especially when the 1176 and the dbx's are engaged) are this figures normal or is it already over the "professional recording" level?
there is no automation on this desk that could maybe help a bit...
Old 28th July 2005
  #2
Gear Maniac
 
StefanM's Avatar
 
๐ŸŽง 15 years
Hello lowswing,

we have an Orion desk in our B room and if it is one thing it's quiet...
If you have noticeable hum check your outboard cabling (there are
good hints concerning grounding in the Orion manual!) but also check
grounds in the desk. Do you have internal patchbay? If yes the grounding
on it is rather cheesy from the factory.
Concerning noise start with the outboard unpatched - we have some vintage
gear that IS noisey - but it's used anyway because of character.

You do have a cadac eq? What type? How did you rack it?
(I thought I was the only one who has one...)

Good luck
Stefan
Old 28th July 2005
  #3
Lives for gear
 
studjo's Avatar
 
๐ŸŽง 15 years
it's certainly not the norm for analog mixing - my 1178 had a similar problem today, but I have to look at that one anyway. The most important thing in the analog world is GAINSTAGING. Use as much level as you can without artefacts and you shouldn't run into noise problems - allways watch the efx returns for noise.

Hum - grounding?


good luck

Jo
Old 28th July 2005
  #4
Kush Audio
 
u b k's Avatar
 
๐ŸŽง 15 years
feel the mute.

BE the mute.


gregoire
del ubik
Old 29th July 2005 | Show parent
  #5
One with big hooves
 
Jay Kahrs's Avatar
 
๐ŸŽง 15 years
That seems way too high. About the highest it'll ever be in my room is about -65dBfs and I'm usually 8-10dB better then that. Assuming the console & outboard wiring, grounding and other such nonsense isn't the culprit, I'd do the following.

With the mix stopped and the control room volume up...unmute all the channels and listen to the noise floor. Start muting channels 1 by 1 and you'll probably find a handful that are really noisy. Old FX boxes like SPX 90's are the worst and 1176's can bring up tons of noise. I'd get going on a muting program or maybe get some quality noise gates.
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