Kennedy 9800 - Power-up tips?

Chuck Guzis cclist at
Thu Apr 23 13:20:07 CDT 2020

On 4/23/20 10:53 AM, Robert via cctalk wrote:
> I'm under caffeinated and not really with it yet, having recently gone semi
> nocturnal, so you'll want to double check this with someone who's actually
> awake.
> That said, variacs aren't a universal panacea and can sometimes be harmful
> rather than helpful.  My disorganized memory is offering TVs as an example,
> but take that with a pinch of salt. I've only ever used them with tube
> radios and amps, so have nothing further to offer,  save this caution.

My own experience is that they're pretty much useless when a siwtch-mode
power supply is involved.

If you're dealing with a linear power supply, a good first move, in my
experience, is to hook a high-wattage (say, 100W) in series with the AC
line for first power-up.


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