lead singer electrocuted

Post by bob
http://ecmweb.com/shock-electrocution/lead-singer-electrocuted-during-sound-check
This is why its so important to be vigilante about good grounds,
neutrals and electrical disto practices.
The author was not quite so smart about saying it was a mike cable or such..

** For a different version of the same event:

http://www.dailymail.co.uk/news/article-2848695/Rock-singer-electrocuted-microphone-performing-stage-Argentina.html

So the singer is also a guitarist and was likely being earthed by the steel strings when his lips touched the mic.

Assuming all the gear was actually working, a safety earth was missing somewhere.

... Phil

Peter Larsen

2014-12-11 07:35:33 UTC

Post by Phil Allison
http://www.dailymail.co.uk/news/article-2848695/Rock-singer-electrocuted-microphone-performing-stage-Argentina.html
So the singer is also a guitarist and was likely being earthed by
the steel strings when his lips touched the mic.

I would have thought earthed by the microphone house and mains voltage on
guitar strings because of unfortunate state of repair of the guitar amp.

Post by Phil Allison
Assuming all the gear was actually working, a safety earth was missing somewhere.

Or perhaps only the PA had.

Post by Phil Allison
... Phil

Kind regards

Peter Larsen

Phil Allison

2014-12-12 00:10:35 UTC

Post by Phil Allison
So the singer is also a guitarist and was likely being earthed by
the steel strings when his lips touched the mic.

I would have thought earthed by the microphone house and mains voltage on
guitar strings because of unfortunate state of repair of the guitar amp.

** The news item says the mic was the source of the shock.

Post by Phil Allison
Assuming all the gear was actually working, a safety earth was missing somewhere.

Or perhaps only the PA had.

** Had what ?

Yamaha *used* to make powered mixers (EMX series) that were class 2 insulated and so had no safety ground.

Guitarists kept getting bites from microphones since they were floating at about 120VA due to stray capacitance in the mains transformer.

Fitting a 3 wire power lead and grounding the chassis fixed the problem - a local hire business got me to do all their EMXs.

IMO, a non grounded PA system is a lethal hazard and so is a non grounded guitar amplifier. Luckily, it is very rare to see either made as a class 2 appliance.

.... Phil

Phil Allison

2014-12-12 02:07:31 UTC

Post by Phil Allison
Yamaha *used* to make powered mixers (EMX series) that were class 2 insulated and so had no safety ground.
Guitarists kept getting bites from microphones since they were floating at about 120VAC due to stray capacitance in the mains transformer.

** FYI: Class 2, 240V versions of Yamaha's EMX powered mixers were sold in Europe and Australia - but strangely US and Canadian versions were class 1, so fully earthed. I know this cos the service manual covered all versions.

Could this be because UL approval rules did not allow a class 2 PA system ?

BTW: The thing that could render an EMX PA system *100% lethal* is plugging an effects unit into one of the send/returns that had very high leakage or a miss wired plug - so that active was linked to earth.

This would render all the mics and speaker leads *live and lethal* - however the PA system would continue to work just fine - until a guitarist tried to sing close into one of the mics ....

... Phil

Peter Larsen

2014-12-12 05:50:04 UTC

Post by Phil Allison
So the singer is also a guitarist and was likely being earthed by
the steel strings when his lips touched the mic.

I would have thought earthed by the microphone house and mains voltage on
guitar strings because of unfortunate state of repair of the guitar amp.

** The news item says the mic was the source of the shock.

News items are written by journalists and it says "faulty wiring of the
mic".

Post by Phil Allison
Assuming all the gear was actually working, a safety earth was missing somewhere.

Or perhaps only the PA had.

** Had what ?

Safety earth.

Post by Phil Allison
.... Phil

Kind regards

Peter Larsen

Phil Allison

2014-12-12 10:21:20 UTC

Post by Phil Allison
So the singer is also a guitarist and was likely being earthed by
the steel strings when his lips touched the mic.

I would have thought earthed by the microphone house and mains voltage on
guitar strings because of unfortunate state of repair of the guitar amp.

** The news item says the mic was the source of the shock.

News items are written by journalists and it says "faulty wiring of the
mic".

** Do try to learn to read someday - piss head.

http://www.dailymail.co.uk/news/article-2848695/Rock-singer-electrocuted-microphone-performing-stage-Argentina.html

Journalists simply repeat what they are told.

The only info we have is that the mic was the source of the fatal shock.

You got some private info ?

Plucked out your fat arse maybe ?

... Phil

Peter Larsen

2014-12-13 07:28:09 UTC

Post by Phil Allison
** The news item says the mic was the source of the shock.

News items are written by journalists and it says "faulty wiring of the
mic".

Sometimes yes, however it would appear the source is not technical, the
source is press-staff without any technical knowledge. Way many years ago I
was electrocuted when touching a printing press. The faulty item was the
non-grounded auxilliary ventilator I was adjusting with the other arm, not
the printing press.

Post by Phil Allison
The only info we have is that the mic was the source of the fatal shock.

No, the info available is that the shock happened when the guitarist touched
the mic.

Please come up with an example equipment fault that makes it probable. With
a guitar player and considering the descriptions of probable
amplifier-related wiring faults you yourself has posted previously I hold
that the prime suspect remains the guitar amplifier.

Kind regards

Peter Larsen

Phil Allison

2014-12-13 08:02:38 UTC

"Phil Allison"

Post by Phil Allison
** The news item says the mic was the source of the shock.

News items are written by journalists and it says "faulty wiring of the
mic".

Sometimes yes, however it would appear the source is not technical, the
source is press-staff without any technical knowledge.

** The *source* cannot be a journalist - you PITA dickhead.

< Way many years ago I was electrocuted ...

** So how come you are still alive ??

Better go look up what the term "electrocuted" means, you bloody ignoramus.

Post by Phil Allison
The only info we have is that the mic was the source of the fatal shock.

No,

** Yes = learn to fucking read, imbecile.

For "mic" read "PA system" of course.

Please come up with an example equipment fault that makes it probable.

** Try reading my what I have *already posted* here instead of snipping and ignoring it.

YOUR barking mad hunches about what happened are NOT relevant.

FOAD.

... Phil

Peter Larsen

2014-12-13 08:33:36 UTC

"Phil Allison"

Post by Phil Allison
** The news item says the mic was the source of the shock.

News items are written by journalists and it says "faulty wiring of the
mic".

Sometimes yes, however it would appear the source is not technical, the
source is press-staff without any technical knowledge.

** The *source* cannot be a journalist - you PITA dickhead.

The source is the venue press relations employee, such are usually
journalists.

Post by Phil Allison
< Way many years ago I was electrocuted ...
** So how come you are still alive ??

Hatha yoga breath control restarted the heart.

Post by Phil Allison
Better go look up what the term "electrocuted" means, you bloody ignoramus.

Post by Phil Allison
The only info we have is that the mic was the source of the fatal shock.

No,

** Yes = learn to fucking read, imbecile.

I am glad to hear that you are well and barking in your usual style. Phil,
face it, you no longer are able to offend anybody around here. Have a nice
Christmas!

Kind regards

Peter Larsen

Post by Phil Allison
For "mic" read "PA system" of course.

Please come up with an example equipment fault that makes it probable.

** Try reading my what I have *already posted* here instead of snipping and ignoring it.
YOUR barking mad hunches about what happened are NOT relevant.
FOAD.
... Phil

geoff

2014-12-14 02:56:14 UTC

Post by Phil Allison
So the singer is also a guitarist and was likely being earthed by
the steel strings when his lips touched the mic.

I would have thought earthed by the microphone house and mains voltage on
guitar strings because of unfortunate state of repair of the guitar amp.

** The news item says the mic was the source of the shock.

News items are written by journalists and it says "faulty wiring of the
mic".

** Do try to learn to read someday - piss head.

And there was me thinking they had your little problem under control .

Great coming from somebody who just typed " miss wired" !

geoff

geoff

2014-12-11 09:45:38 UTC

http://www.dailymail.co.uk/news/article-2848695/Rock-singer-electrocuted-microphone-performing-stage-Argentina.html
So the singer is also a guitarist and was likely being earthed by the steel strings when his lips touched the mic.
Assuming all the gear was actually working, a safety earth was missing somewhere.
... Phil

"Faulty wires in the microphone " - he got zapped by P48 ?!!! I think
not....

geoff

DanielleOM

2014-12-11 12:51:45 UTC

Phil

Have any thoughts on how to protect your self with the older amps with
no ground pin? I really got a good jolt back in the early 70s using a
Fender Deluxe Reverb silverface amp. Hands were on the guitar strings
and I touched the mic connected to a house PA system with my hand.
Needless to say I was a little shaky playing the next few tunes. Those
Fender amps had a reversal switch on the back. I suspect it was not in
the correct position. No longer have the amp. Silly me sold traded it
for very little, during a full blown SCGC guitar OM GAS event, not
realizing how costly point to point wired tube amps had become. No
longer have the Fender Mustang guitar I was using when I got shocked.

Danielle

Phil Allison

2014-12-12 00:25:35 UTC