View Single Post
  #38   Report Post  
Posted to sci.electronics.repair,sci.electronics.design
Eeyore Eeyore is offline
external usenet poster
 
Posts: 2,770
Default Peavey XR 886, 1997, mixer amp



gareth magennis wrote:

"Ron(UK)" wrote
BobG wrote:


That ancient Peavey transformer might be hotter (thermally! not
wattagely!) on 50hz than on 60hz, and class AB amps dissipate worst
case power at about 1/3rd max power.... its where the load line runs
right across the hyperbola on the IV curve... and if the voltage in
the club sags when the drink cooler compressor turns on, its a perfect
storm of overheat factors.


Voltages in the UK don`t generally sag much if at all



AFAIK the lowest legal voltage the electricity company can supply in the UK
is 10% down (from 240) which is 216v, the highest legal voltage is 254v,
less that 6% high.


It won't be based on 240V any more because we're officially (on paper) 230V.
Maybe 230 +/- 10% but that's just an EU standard - it's NEVER as low as that.


Suffice to say you won't normally get those kind of
variations at the mains intake at the venue.

I don't know how much voltage drop you might experience due to the clubs
wiring before it was deemed unsafe or illegal though.


Never seen any worth talking about. Have you ?

Graham