dlozanothornton
Active member
Hi there,
I want to build a portable mic preamp, for condenser microphones only (Schoeps, Sennheiser, etc., so expecting 50 - 200 ohm impedence approximately - so 2.5 - 5k input impedance preferred).
The gain needs to only be from 20-50db of gain.
I want to design something with at least 15 - 20k frequency response within 1 db or better, discrete preferred but IC possible.
I want to make it run on a some rechargeable 9v batteries (up to 6) like the Sonosax or Sonodore designs (SX-M2 for example), but I feel lame just buying stuff and want to continue to modify it over the years.
Sonosax, SQN, Sonodore and the upcoming Pueblo Isleta are all very high quality designs with similar briefs.
High quality and linear are my primary goals here.
Could anyone point me in the right direction for this in any way?
I'll try and upload some possible schematics of my own at some point soon when I get a chance for critique, but I am fairly inexperienced, but I am not that interested in DIY-ing coloured preamp designs.
Maybe there is a DIY project out there already that covers most of this but could adopted to battery work. I am looking through the archives atm...
I want to build a portable mic preamp, for condenser microphones only (Schoeps, Sennheiser, etc., so expecting 50 - 200 ohm impedence approximately - so 2.5 - 5k input impedance preferred).
The gain needs to only be from 20-50db of gain.
I want to design something with at least 15 - 20k frequency response within 1 db or better, discrete preferred but IC possible.
I want to make it run on a some rechargeable 9v batteries (up to 6) like the Sonosax or Sonodore designs (SX-M2 for example), but I feel lame just buying stuff and want to continue to modify it over the years.
Sonosax, SQN, Sonodore and the upcoming Pueblo Isleta are all very high quality designs with similar briefs.
High quality and linear are my primary goals here.
Could anyone point me in the right direction for this in any way?
I'll try and upload some possible schematics of my own at some point soon when I get a chance for critique, but I am fairly inexperienced, but I am not that interested in DIY-ing coloured preamp designs.
Maybe there is a DIY project out there already that covers most of this but could adopted to battery work. I am looking through the archives atm...