Way too much bass in my mic pre-amp

audioguru · May 21, 2010

TheGuy said:
So, audioguru, I'm going to take a crack at your electret mic preamp. I do have two questions before I start my electronic adventure, though.

Does your circuit provide power for the electrets?

R1 powers a single electret mic from a filtered voltage. If you want more mics then two or three can be connected in parallel then the value of R1 should be reduced.

Also, because the Zen has NO amplifying at all, it requires quite a loud input to be just under clipping. If you'll excuse the non-precise comparison, it requires something similar to an MP3 player on 2/3 volume. So, because your circuit is a pre amp, it'll also need another amplifier afterwards, correct? Or will your circuit amplify the mic quite a bit more than I'm thinking?

My preamp has plenty of adjustable gain. With a 9.0V supply its max output before clipping is 2.3V RMS which is much more than an MP3 player.

TheGuy · May 21, 2010

Fantastic, I'll have a bash at building it next week.

Way too much bass in my mic pre-amp

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Way too much bass in my mic pre-amp

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