• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

How to build a pultec HLF-3C

Hello folks,

Im newbie on this, but want to build my first diy project on HLF-3C filters. I supose its a good newbie project, am I right? I want to make a stereo version, and would like to change some filter values to 20, 30, 40hz on high-pass and 20, 18, 16k on the low pass. Anyone can help me wiyh this? Thanks!

*Not sure If im posting in right place. I know its not a tube project but its part of pultec eqs and i didnt find better place to post. Please move It If necessary. Thanks