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DF50 off of a dimmer...


AndyJones

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Hello guys,

 

I heard from a friend the other day that the DF50 hazer was designed so that it could be run off of a dimmer. which would make sense as it has no onboard DMX. But before I went and wrote off a channel on our Art Rack I thought I would ask on here...

 

AndyJones

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No idea whether it is the right thing to do (™) but I have done it several times with no noticeable adverse effects on either the Art Rack or the DF50.

 

No effects that is apart from the one whether the designer insisted the hazer went next to the Art Rack, when the racks were full of gunk afterwards - but that it is an allowable effect!

 

I may have ended up with the channel in question being set to a switch, but it is still a dimmer not a switch pack, so no real difference in the mess made of the sine wave.

 

YMMV

 

T

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Hmmm...

Pardon me for being dense, but WHY would you want to put a hazer on a dimmer channel...??

Surely, this would NOT give you the required control over the output.

Putting on a channel in this way would - as far as I can see - simply give it mains power, and thus you'd be waiting for the machine to heat before giving haze output, and so you couldn't realistically program it as a cue...

 

But if all you want to do is supply it's hard power from the rack, why not just give it hard power? Why would you need it on a DMX channel?

 

I may be being dense but not really sure what the benefit would be of powering from a dimmer channel UNLESS that's the only power you have available (which seems unlikely).

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DF50's are a compressor based hazer, not a fan + heat block based hazer. The time from power to haze is about 5 seconds, so it is very common to put a DF50 into a dimmer. However it is advisable to ensure you change the dimmer curve/law/profile (what ever your dimmers call it) to a switch mode (square wave) - so that the channel is either 0 or 100%, no matter what the actual DMX value.
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As with Mac Calder, I always run DF50's off a dimmer, however, I always modify the channel as Mac suggests, and effectively turn the channel into a relay circuit. Works a treat, and doesn't mean having to ask an on-stage tech to turn them on/off every time the turn has a hissy fit when they walk past it.

 

Cheers

 

Smiffy

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A nice add on for DF50's that a company I work for use is a Pulsar Unipak which fits perfectly in the lid of a DF50 with powercon to 16a of both genders. Can be set to operate as a switch or a dimmer, set to switch in this case. Bit pricey you may argue but if you are spending that much on a differ....
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There is also a DF-50 version with DMX control built in - based on a timer that works around 100 seconds. Channel at 40, haze for 40s, off for 60s. Quite a bit more expensive though, if I remember correctly!
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