Bristol_Jonesey

jpetersen
Untreated dynamic vocals can sound weak compared to other instruments.
Once you use the Concrete Limiter or one of the compressors, it will rise in loudness.
 
By the way, I am curious to know if the 25Hz area thing has been solved.
If so, then this microphone will pick up this low-end area from anything playing at the back, so beware in cases where you are playing with drums or bass.

No, it's still there, and seems to have risen in level in proportion to the rest of the recorded audio.
 
Don't you find it ironic that when attempting to solve one problem, another issue is quite often revealed.

Sanderxpander
If you zoom into your waveform you can see that it doesn't cross zero (middle) very often - the higher frequencies modulate up and down as a whole. That's not supposed to happen. With one take and on smaller speakers you may not hear much of a difference but the huge amount of low energy is coming from somewhere and is a major problem later on. It has nothing to do with mic technique I don't think. It seems like a technical or electrical problem. A normal looking wave crosses through zero with every fundamental (lowest frequency oscillation). Your fundamental is around 25Hz but your actual voice doesn't get below, say, 100Hz. Look at the audio clips in this link:
https://www.cakewalk.com/..mentation?product=SONAR X2&language=3&help=Arranging.12.html

Do you see how yours look different?

Can you try a different mic cable? The second input on your interface? How many power points are in all your connected gear (speakers, computer, interface etc) and how are they hooked up (single socket with an extension, multiple wall sockets, grounded or not etc).

Sanderxpander
Ok try this then:
https://www.dropbox.com/s/zgbffy1utnxlya6/25Hz%20fix.wav?dl=0
 
I processed your second file with a heavy cut around 100dB to take out all of the excess lows. It's a bit extreme but if you put it next to your original you can see the difference in the files and your voice shouldn't sound too different. This is what a normal vocal recording is supposed to look like.

jpetersen
What kind of floor is it?
 
The mic does not know that Sonar has stopped recording. Neither the mic nor the interface will behave any different.
If you sing, then stop abruptly, is there a tail of this low-frequency material visible in the recording?
 

jpetersen
No. DC is a clear offset either up or down.
 
Let's eliminate things systematically one at a time, else we'll be guessing forever.
 
Please record some silence with your mic connected and the input level at what you normally use.
Do the same with the mic and cable disconnected.
 
If you get the low waveform only when the mic is connected, then it really is the mic.
Else it is your interface or some other source of interference.

Bristol_Jonesey

Sanderxpander
Could it be DC offset of some sort? I've never used that checkbox.

I wondered about that and actually processed his original clip but there's no change to the 25Hz build up.
 
Op, if you crank your monitoring up REALLY loud, can you hear any subsonic rumbling anywhere?
Do it with your mic plugged in and the input gain at normal recording level - make sure input echo is on

Sanderxpander
Eh DON'T crank up your monitoring if your highly sensitive condenser mic is in the same room!!