I recently started recording voice (spoken only so far) on my PC and soon found out that internal/external sound cards are a waste of money, since almost all of them have low quality, noisy microphone preamps. I also wanted a portable solution, that would be usable with decent results in all realtively quiet environments, so I did some digging.
To make a -really- long story short: I found a connector circuit that was outlined in a blog post here, and since I wanted to verify what was posted there, I also found this post by steve in this forum. Since both sort of matched it gave me enough confidence that the layout would not fry my newly bought hardware, so I settled for a PC Headset (Beyerdynamic MMX2) and an USB Audiointerface (Focusrite Scarlett 2i2).
I built the circuit, and it worked like a charm. So thanks to steve and the whole forum for that!
Because I had some additional parts, I used a 10kΩ trimmer to replace the 2,2 kΩ resistor outlined in the original circuitry. Since I’m sort of an adventurous type I fiddled a little with the trimmer (I just increased the value, I’m not that adventurous ), and the increased value gave me a much higher output signal from the Focusrite.
Since it improved my input signal, which is always a good thing to have, I would like to keep the increased value. However because I only have some very basic electronics knowledge, I’m not sure if keeping the value would damage my headset, or even the Focusrite, so I would like a professional opinion on that
Another thing I would like an opinion on is: The Focusrite also gave me an improved signal when I set the input channel the circuit was connected to to Hi-Z. Please mind that that was without altering the resistor value! Can I keep that setting, too, or will it be harmful to the Focusrite? I’m worried Hi-Z may not be supposed to be connected to the kind of output the custom built circuit provides?
Any help will be greatly appreciated!