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Well, when bad weather gets too close, I start unplugging things. Then I'm really sure. Nothing is 100% safe. Gene
BTW, I never got around to posting this back when I started this thread. Based on what I read here I decided to plug my RM9 directly to the wall. Here's what happened, but 1st, a little backstory!;) When I was living in GA. I was in a house and had the RM9 plugged into the PC. When I fired up the system everything was dead silent. A few yrs. back I moved to an apt. in FL., immediately upon firing up the system here I heard a hum. After checking all the usual suspects the hum persisted and I just chalked it up to the 'sharing the electricity' theory. Just figured it was due to living in an apt. vs. living in a house and simply accepted the hum, besides it was completely inaudible when playing music. Cut to this thread, after reading RM's response, I decided to give it a shot and plug the amp directly into the wall, you probably can guess what's coming! Plugged it in, buh-bye hum!!! What a pleasant surprise! The on/off switch has been behaving itself also! Listening to Ella Fitzgerald & Joe Pass as I type and life is good!!;)
Hum is usually caused by a grounding or cable issue. Only the power amp should be grounded. I still like things plugged directly into the wall. No power conditioners in my house. I still contend that for power amps especially their added resistance is not favorable.
And if there's no added resistance?
Myths...The giant chokes by Gray did work, but no one ended up liking the sound, the resistance was through the roof too so they wasted a ton of energy, and his pricing may not have been very appropriate. This all seems ridiculous to me since a system with a good power conditioner is a pleasure to listen too, and one without is a chore by comparison.Also to note, almost no amplifier has any serious filtration to speak of. The design usually rejects a fair amount of RF and ground loops, but even very well designed units benefit from power conditioning.
I'm not sure what's in them now. The early one was literally a giant choke. What do you think the odds of me understanding parallel is, given that I make conditioners?
I think he's claiming parallel, but also using series. Maybe I got the new stuff wrong? People were buying giant chokes from PE for series, to duplicate his a long time ago.
Looking at what I can find on the new ones, parallel is a fib in a sense. They're in parallel until there's draw on the stored energy, then they become a source. That's based on how they claim to work, but don't include full disclosure of how it changes. Reviews still claim they help one thing, hurt another. And techinically when the inductors act as a source, resistance is probably pretty high! Lot of talk over a something you wouldn't use anyway
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