Mains frequency change

[jleaman]

Originally Posted by sawreyrw

Are SMPS used in audio equipment?

some have it, but most really high end equipment doesn't really use it. I'm not a fan

[Andrew Eckhardt]

Originally Posted by jleaman

some have it, but most really high end equipment doesn't really use it. I'm not a fan

It seems to be mainly used in pro gear where the weight reduction is serious.

[jleaman]

Originally Posted by Andrew Eckhardt

It seems to be mainly used in pro gear where the weight reduction is serious.

I remember getting hold of a qsc schematic once, DAM those are light amplifiers but tons of welding power


J'

[Conrad Hoffman]

Any given power transformer will perform a bit worse at 50 Hz, even if designed for it. The name of the transformer game is cost, so they try to use the cheapest transformer steel and as little of it as possible. If your power transformer isn't producing mechanical hum, and if it isn't running excessively warm, don't worry about it. The cure is worse than the disease. You'd have to get something like a California Instruments, Invertron or Elgar voltage/frequency converter. (can't remember who makes what) The cost would be prohibitive and they're often noisy. Most audio equipment is way over designed when you consider the real average power requirements, so both the tranny and filter caps are probably fine for 50 Hz. OTOH, I used to have an Integral System 100W/ch amp with a transformer that hummed and ran hot enough to cook on even at 60 Hz. Just a very low quality part.