[Amps] When to leave the amp on vs turn off.
Gary at ka1j.com
Sat Aug 25 09:06:59 EDT 2018
For years I've turned on the amp when
needed or when anticipated I will likely
use it as trying to work a DXpedetion or
sked. Turning off the amp, I've waited
till the tubes (pair of 8877 & another amp
with a pair of 3-500) are cooled down &
then turned off when done. Sometimes I
plan to use the amp later in the day &
wonder if I should turn it off & restart
later or better to leave it running.
I've been concerned that frequent
cool-down & warm-up will cause future
leaks from excessive contraction/expansion
of the tubes. At the same time I have
concerns for leaving the fan on
A replacement blower for the old Alpha SX
will be less expensive than replacing
tubes but replacement blowers for it I
understand, are difficult to obtain.
I'm interested in thoughts about when it's
best to shut down an amp vs better to
leave it running. Other than the obvious
mechanical wear on the fan, is there an
issue on the tubes or PS by leaving the
amp on but unused for hours at a time.
What's a practical rule of thumb?
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