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Current Affairs :: Massive Attack

hdmcc — Fri, 19 Mar 2010 09:08:55 GMT

Author: hdmcc
Subject: Massive Attack
Posted: Fri Mar 19, 2010 8:08 pm (GMT 11)

Hi Guys, i had a chance to stick my head in to the Massive Attack load in this morning and i was just wondering if anyone knows what the rigs made up of?

Thanks.

Current Affairs :: RE: Guns n Roses stage collapsing in Rio de Janeiro

hdmcc — Thu, 18 Mar 2010 08:01:47 GMT

Author: hdmcc
Posted: Thu Mar 18, 2010 7:01 pm (GMT 11)

dude, thats not cool, i was sh**ing my self just watching it haha

Current Affairs :: RE: Guns n Roses stage collapsing in Rio de Janeiro

Ashley R — Thu, 18 Mar 2010 07:01:48 GMT

Author: Ashley R
Posted: Thu Mar 18, 2010 6:01 pm (GMT 11)

all i can say is Oh My God.

Current Affairs :: RE: new seller on ebay??

Ashley R — Thu, 18 Mar 2010 06:45:24 GMT

Author: Ashley R
Posted: Thu Mar 18, 2010 5:45 pm (GMT 11)

Hmmm it cant be stolen gear as i dont invision someone walking out of a factory with 50m of Box truss.

Its either its legit or its exactly what is said above

Current Affairs :: RE: Guns n Roses stage collapsing in Rio de Janeiro

rossgo — Wed, 17 Mar 2010 11:49:09 GMT

Author: rossgo
Posted: Wed Mar 17, 2010 10:49 pm (GMT 11)

no words can explain this. WOW

youtube link http://www.youtube.com/watch?v=zb8F-Kpuzs4
_________________
ROSS CARDWELL
FREELANCE LIGHT & SOUND, SYSTEM TECH
SPARKY

Current Affairs :: Guns n Roses stage collapsing in Rio de Janeiro

Dan Booth — Wed, 17 Mar 2010 06:04:26 GMT

Author: Dan Booth
Subject: Guns n Roses stage collapsing in Rio de Janeiro
Posted: Wed Mar 17, 2010 5:04 pm (GMT 11)

Hi all, yesterday ( March16th) a massive stage and ground support was obliterated by bad weather....luckily no one was apparently hurt.

Check out the footage -
YouTube - BobbyJarzombekTV's Channel

DB

Current Affairs :: RE: A new standard for dimmer 3 phase plugs

rossgo — Sun, 14 Mar 2010 10:26:13 GMT

Author: rossgo
Posted: Sun Mar 14, 2010 9:26 pm (GMT 11)

nice video allthingstheater... a good video to show your crew on what goes on
_________________
ROSS CARDWELL
FREELANCE LIGHT & SOUND, SYSTEM TECH
SPARKY

Current Affairs :: RE: A new standard for dimmer 3 phase plugs

GL — Sun, 14 Mar 2010 08:51:32 GMT

Author: GL
Posted: Sun Mar 14, 2010 7:51 pm (GMT 11)

all non-linear devices cause the distortion... computers, fluro's, battery chargers, to name just a few. The entire grid is dirty.
_________________
"No matter what age we are, some have never quite left the schoolyard"

Current Affairs :: RE: A new standard for dimmer 3 phase plugs

f9 — Sun, 14 Mar 2010 08:42:01 GMT

Author: f9
Posted: Sun Mar 14, 2010 7:42 pm (GMT 11)

Neutral currents can be higher than what you have stipulated .It is not just Dimmer, but actual load which is adding to it. Different harmonics in higher currents cannot actually neutralize on neutral joint and they travel up to transformer because they have different frequencies.
Whatever is generating harmonic distortion is illegal to be used in the system. But in practice some designs haven�t filtering or is with bad quality which is reason for this problem. Metal halides are terrible example for this. In Australia no one company have attest for metal halide fittings.
From other side some people use generators with higher frequencies to twist the meter reader, feeding in higher frequencies and they ad to the problem as well. Overall dimmer cannot be seen isolated from the rest of the system.
Standards and laws are prohibiting using the earth pin and conductor even in MEN system supply for transfer of neutral currents after the switchboard, like appliance-dimmer in this case.
This is not technological problem but more of level of standard.
In country which don�t bother about the standards and what they say Earth pin and earth conductor in MAN system can be without problem used for neutral loading on the dimmers.

Current Affairs :: RE: A new standard for dimmer 3 phase plugs

GL — Sun, 14 Mar 2010 08:10:20 GMT

Author: GL
Posted: Sun Mar 14, 2010 7:10 pm (GMT 11)

on the day at Fox (Fox 1), when we had two banks of 20 (HP12) racks (balanced loads), with 5 parralleled gennies feeding 4,000amps on a 12,000ltr/ min wet set (before Jands did the modification.. this situation is what caused the neutral sensing modification they did to their HP12's - onsite), we measured 3,000-Hz @27% drive, which caused the phases to "roll" (phase rolling) when the rig was driven higher. Lamps would come on and off of their own accord, depending on which phase they were on and it was a rhythmical rolling.

dimmers (HP12) without a neutral, tend to become a distro... channels on or off only.

Similar was Fox2, which caused Fox Studios to derate their 1,200A supply by 50%... except with that, the studios next door would have the fluro's, etc, flickering like crazy, as it was all on mains power. Mind you there was much dodging and responsibility flicking before Fox cracked.

I used to integrity test my systems at 45 - 50% and any racks which flunked out (heat/ flickering/ buzzing, etc), were replaced, with the odd warm cable replaced also. Everything would be touch tested for warmth... testing was left to run for about 1/2 an hour. Keep in mind here though, I would load my systems @ 75% capacity, including mains breaker.

I also used to do a lot of Expo's also (same testing regime)... all on a 25% derated system( dimmers and distro's - balanced loads), for the event.

the equipment which "held" is still running strong and mostly dimmer failures were electronic compnent.

nice video, though it seems show the dimmer's currents are additive at the 30% mark.
_________________
"No matter what age we are, some have never quite left the schoolyard"