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Yiangos
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Could someone please explain what happened ?

After some heavy rain with lightnighs yesterday,i realized my power amp's circuit breaker fell.I turned it on and found out the amp made some weird,rather strong hum noises on the left channel.I tried everything but the hum persisted.In the end,i replaced the balanced ic i was using with another one and everything worked perfectly.How can a bal ic be destroyed,if this is the right word,when the power amp is working properly ????Anf my next question is , CAN a ic be destroyed and how when what actually happened, as far as i understand,the grounding cables inside the ic was kinda removed or burned.Can this happen?

Jeff Wong
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Re: Could someone please explain what happened ?

Yiangos - Some answers might be found here. Maybe the lightning strike created a surge to your system which melted the ground wire and the electricity took the path of least resistance (left channel?), then the breaker flipped? Or your system caught part of the lightning strike before the breaker flipped?

Yiangos
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Re: Could someone please explain what happened ?

Thanks Jeff.So,it can happen !

Jeff Wong
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Re: Could someone please explain what happened ?

I just fixed the URL (it wasn't coding properly before.) Hopefully, someone more knowledgeable will pipe in, but, that PDF file does cover lightning strikes and gear. I guess if your interconnect got cooked, it must happen. I've had stuff shut off and cooked from line surges, but, thankfully, nothing lightning related yet, and no melted interconnects. I guess it could've been worse, and you could've lost the amp (unless you have a melted Nordost Valhalla, where the cabling could cost more than the amp.)

mrlowry
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Re: Could someone please explain what happened ?

Electricity can do strange things. I've seen it destroy one component in a power strip and leave the other seven untouched. Out of curiosity did you have your equipment plugged into a surge protector/power conditioner? If not it would not only protect the equipment but allow it to perform better as well.

Yiangos
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Re: Could someone please explain what happened ?

Hi mrlowry

Nope,just plugged straight into a wall socket.I've read strange things about surge protectors with power amps,loss of dynamics etc and to be honest,i am afraid to get one.Not to mention that it would be quite expensive.My amp is 250 wpc.

Jeff , thank God it was the MAC ic and not the VanDenHul mc-silver which at 6 meter stereo pair is quite a bit more expensive than the equivalent valhalla lol

CECE
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Re: Could someone please explain what happened ?

www.furmansound.com Not a plastic radio shack useless MOV only type. And this also shows the importance of properly grounded AC ckts, geee, wasn't I ranting some time ago about UL listing of STUFF, and some genius remarked what kind of damage could be done with Interconnects not UL listed etc etc etc. Yeah electricy can strike at anytime. If you have poor grounds, it found a ground in another component maybe and went through teh IC to that ground. Gee, it's only audio, nothing based on UL or any practical electricla experience means anything. Tweak away with ground eliminators and those other DANGEROUS bogus hum stoppers etc. Just think when a component shorts in a piece, and it decides to energize a chassis, ZAP!!! someone gets electrocuted. Audio, it doesn't need UL or any thing related to reality.

mrlowry
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Re: Could someone please explain what happened ?

Yiangos

Normally I would agree with you. Lots of these devices do limit current rather severely. There are ones with high current outlets, that do not but these do very little power conditioning. However, you might want to check out some of the power products from a company called Transparent (http://www.transparentcable.com/) audio. Their power products deal with a phenomena called "power factor distortion" (google the term if you want an in depth description), something most power conditioners ignore because it is too expensive and difficult to solve properly.

Yiangos
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Re: Could someone please explain what happened ?

mrlowry thank you very much.I wasn't aware trasnparent made power products.Anyway,there is a slight problem here,Our mains over here is 240 volt,so,i quess i should be looking to European products.

mrlowry
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Re: Could someone please explain what happened ?

To be honest with you I'm not sure if Transparent does anything as far as power conditioners for Europe. I do know that they do power cords for Europe. They might

CECE
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Re: Could someone please explain what happened ?

Pf correction reduce wasted energy, correct for inductive load of large transformers in high power amps, as in 4800W worth of amps and 4 large line transformers. http://www.furmansound.com/products/pro/pwr_cond_seq/cond/_pf/pfpror.php

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