JFET Mic Preamp Advice

[evengravy]

15 mV rms/Pascal is typical. 1 Pascal is 94 dBspl. So the 15 mV might be typical output for a fairly close miced loud singing voice.

thanks leswatts, this is just the information i needed, in testing situation would you design a circuit using output range then 15mV rms or should I allow more headroom, the circuit is for personal studio uses and wont be used for drum mic'ing, mainly vocals.

"Borbley has 2 versions of an all fet mic preamp"
right, would the circuit schematics be available? im not looking to rip off there design it would be handy to see how they have designed theirs to learn.

thanks guys