asphaltradler
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After months of reading in this very helpful forum, I now need some help for a problem that's driving me mad.
Depending on the mics connected to other inputs, my Behringer B5 microphones, and to a lesser extent also the sE Electronics se8, produce a lot of deep-sounding additional noise on a Clarett+ 4pre I recently purchased.
The same mics on several other interfaces and preamps (Focusrite Saffire, Behringer UMC, M-Audio Audio Buddy, Zoom H6) definitely do not produce this characteristic noise. It ONLY really disappears on the Clarett when 4 mics are connected together and one of them is a Rode NT 1-A large diaphragm mic! This means that the mics on input 3+4 strongly influence inputs 1+2 and vice versa. There is definitely something wrong with the phantom power!
This behaviour really drove me crazy. I wrote with Focusrite support and gave them several audio files showing the noise, with different mics plugged in at different inputs. They finally told me to contact my dealer. So I sent it to them with even more explanations in the hope they would reproduce the issue first, then test it on another Clarett. But they just went ahead and sent me a new one, and hey - it took me 2 minutes to recognize it has the same problem!
Although I had described the problem in detail, apparently no counter-test was carried out.
So now I decided to make videos of that. In all 3 videos I only took the sound from inputs 1+2, i.e. you can't hear the mics on 3+4 (and also not the mobile phone camera certainly). Nevertheless, connecting there or switching the phantom power on and off has an effect on the noise on 1+2.
I tried different cables, switched inputs etc. but nothing helps. You have to listen with headphones and then can hear the noise very distinctively; it's not the usual high hiss of bad microphones but a deeper, water-flow-like 'swoosh' that is immediately recognizable.
Please: can anyone check that out who owns a Clarett/Clarett+? Best with Behringer B5 but I'm certain it must be happening with other mics, too. The sE Electronics se8 shows the symptom, too, but it is less pronounced and I noticed it only when it disappered by plugging in the Rode NT1 in 3 or 4.
The videos are in german but I added english subtitles. The effect is heard best in the 3rd one:
Regards, Cosmas
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