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RE20 Self noise issue, doesn't seem like preamp issue.
Old 29th September 2022
  #1
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RE20 Self noise issue, doesn't seem like preamp issue.

Hey guys, wondering if it is possible to get a defective RE20. I recently purchased an RE20 black and have noticed how high the noise floor/self-noise of the microphone is. It is definitely noticeable in my headphones and want to see if there is anything in my chain I can improve that would help reduce it.

My setup consists of just the RE20 going into a Motu M2. For speaking about 6 inches away, I will max out the preamp at around 5 o'clock on the gain knob. Now I actually don't think the noise is coming from the preamp but is from the mic itself. When I attach a Klark Teknik CT1 booster, turn on phantom power, and adjust the gain knob back to 1 o'clock for a similar level of gain; the white noise like hiss is still present. The hiss is just as loud and may even be worse( not sure since I didn't do an extremely precise gain matching).

I've attached some clips at the gain levels I normally use for speaking, I wrapped the mic in a couple of towels to try to reduce as much environmental noise as possible; so that I can just isolate the self-noise.

Without Booster @ 5 o'clock maxed out gain dial(there is a fan on for this one):

https://vocaroo.com/1guNNUO40tyE

With Booster @ 1 o'clock gain dial:

https://vocaroo.com/1adBPW934EMn

Normal speaking test with booster:

https://vocaroo.com/11gv73hyIOQh

The hiss isn't present on any of my condenser microphones at similar gain levels in the same environment, which really is making me wonder where it is coming from. To my knowledge, dynamic mics shouldn't really have any self-noise since they don't have any substantial internal electronics?

The hiss can be tamed using an expander/gate on quite sections, but I can still tell that it is affecting the audio quality of actual speaking... it just has this grain on top of my speaking that I do not get on my condensers. It also seems like others do not have as much hiss, for example:

https://www.youtube.com/watch?v=zmKDJn1lWt0

Anyways, if you guys have any ideas what's going on, I'd love to hear them!
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