Bob said:
The other feature of some of those power amps of the ratings
wars of the '70s was "instantaneous power".
Did you not read my posts on this
The power supply
was underrated for the peak load, so as soon as the (smallish)
supply caps sagged after a few msec, the output would clip.
This isnt really "instantaneous power", its "average transient power"
during those ms.
RMS power really means "average power over a cycle". "Instantaneous
power", is the single instant VI product, that dont really mean much.
"Instantaneous power", would be the power at *max VI*, not average of
the cycle, and would normally be specified under *steady state*
conditions *after* the supply had sagged!!!
I doubt that many manufactures specified max power by a burst sine test.
Yeah, this is all a bit confusing aint it. "Instantaneous power" isn't,
and "average power" isn't necessarily long term average power, it might
be only the average power during the first few ms.
But they got lots-o-watts for the first couple of cycles of output!
Which is all that is required for clean guitar picks.
I wouldn't be surprised if guitar amp makers got caught up by
this craze as well,
As I explained in another post, capacitor size/cost can make this effect
automatic.
Kevin Aylward
[email protected]
http://www.anasoft.co.uk
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