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Old 22nd April 2016
  #3
Here for the gear
 

Well yes this is true but I have now tested several other preamps and I`m pretty sure its the microphone. This is because the noise is only apparent when that microphone is connected to any preamp i have tested (ssl, apollo, RME). As you can see on the screenshot from RXdenoiser which goes over 20khz there is a steep slope from under 20k and up towards 50k. Thats the mike in recording room with gain of about 46dB on an UA Apollo Quad running at 96kHz samplingrate.

Obviously the noise is more noticeable when recording quiet subjects and not so much on loud noises, but its still there...

Attached Thumbnails
Sennheiser mkh 8040 noise over 20kHz-grap-freq.jpg  

Last edited by skyb; 22nd April 2016 at 02:14 PM.. Reason: attachment