Transformer hum is characterized by several pure tones. The frequency of a number of these is in the range where the human ear is most sensitive. Moreover, transformer noise, being of tonal character, ...

It may have taken 18 months, but the state Public Utilities Commission has finally pulled the plug on a humming backyard electric transformer that a Cerritos man says kept him awake at night. The ...

I just got the latest Hifi News magazine and, as usual, the same ridiculously expensive mains cables etc are being pimped. I usually just skim over that crap, after admiring how pretty it is, but this ...