• From: ITALY
  • Registered: 2014-01-13
  • Posts: 37

Topic: RME UCX "noise floor"

Hello to all,

these are my inputs with all synths off but all rear connected. (these are analog synths from Moog, Elektron, Dave Smith, etc.)

https://ibb.co/iYM5Jn

of these inputs I use only AN 5/6 and AN 7/8 with short cables VOVOX® sonorus (professional line).

can I know why while having the synth off and without electricity, inserting the cables I get up the background noise up to -75dB compared to -103dB of the other inputs?

THANKS
BEST
MC

Matteo Candura
*Songwriter*Producer*Remixer*Musician*Artist*

djcandu's Website

2 Reply by MC

  • MC
  • MC
  • Administrator
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  • From: Germany/Thailand
  • Registered: 2007-04-06
  • Posts: 25,444

Re: RME UCX "noise floor"

First: set the Level Meters to show RMS values - right side in the blue field. Now you see comparable noise values.

Second: connecting electronic gear and switching that off the numbers seen have no meaning. Turn them on and set their volume to minimum, then the numbers show the noise of the connected gear.

Third: with balanced cabling even switched-off units usually show high values. But those synths are most probably unbalanced, so you have no choice.

Regards
Matthias Carstens
RME

MC's Website

3 Reply by djcandu (edited by djcandu 2018-05-06 10:49:36)

  • From: ITALY
  • Registered: 2014-01-13
  • Posts: 37

Re: RME UCX "noise floor"

MC wrote:

First: set the Level Meters to show RMS values - right side in the blue field. Now you see comparable noise values.

done!

Second: connecting electronic gear and switching that off the numbers seen have no meaning. Turn them on and set their volume to minimum, then the numbers show the noise of the connected gear.

electric current ON but synths OFF : https://ibb.co/kPo69S

electric current ON but synths ON with volumes to minimum : https://ibb.co/grt69S

Why the RMS value is higher in OFF? , it wiil be due to some accumulation of balanced electronic inputs? It would be interesting to know.

Third: with balanced cabling even switched-off units usually show high values. But those synths are most probably unbalanced, so you have no choice.

in this case are balanced.

Thanks
Best
Matteo Candura

Matteo Candura
*Songwriter*Producer*Remixer*Musician*Artist*

djcandu's Website