I have a Octava condersor mic, dont remember the model number, since I am at work. Anyway there are 2 slide switches on one side of it? What are these for? One has an "N" and the other has "+" & "-" on it.
They are basically standard switches for high pass and a pad I think. They muck up the sound because its a cheap circuit. You can take it apart and bypass the wiring and it makes the mic sound much more open.
Seriously, check out ocktavamod.com, see which one you have, and talk to him about fixing it up for you. The guy has been super informative to me so far.