Microphones once were magical and in the hands of a few global companies. Parts were exclusive and expensive. These days, thanks to the Chinese copycats, parts are rather cheap to get and the quality of parts, tubes and capsules are mostly good. Knowledge and schematics are widely available on the internet as well as complete DIY packages of the famous legendary microphones. This course introduces you to the known techniques and the possibilties you have to modify a cheap Chinese clone or even build your own replica from scratch. The microphone housing taken from these cheapos is already a treshold taken. DAP, ALCTRON, APEX, NADY, T-BONE etc., basically all from the same Chinese source, are a good start.
Links to info sites:
MICROHONE DATA you have to register
RF MICROPHONE (Sennheiser MKH style)