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Speakers popping when adding plugs to same extention
Just got some RCF310a speakers and tried them out for the first time at the weekend and found it odd that when I plugged a light into the same extention lead the speaker popped and again when I unplugged it!
Not a big deal but I seem to remember this happening with some crappy old speakers I used at home!
Is it an issue?
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I get this with my RCF 422a's when I power up/down equipment with noisy power switches and even noisier motors - namely Smoke and Bubble machines. I have to be very careful as I've found both these pieces of equipment can cause USB communication failure if the power cables or the wired remotes for them are too close to the USB cables. I've seen both DMX and MIDI controllers lock up because of this.
Julian
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I have a similar issue with a datamoon that goes off when I press the fog
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Originally Posted by
Vectis
Always wondered why my VGA cables had these on them... are they used for data cables though??
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Those ferrite cores are only good for ground hums, they shouldn't work for whats being discussed here. Sounds like dodgy wiring.
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Originally Posted by
SamV
Those ferrite cores are only good for ground hums, they shouldn't work for whats being discussed here. Sounds like dodgy wiring.
I think you might be mixing up ferrite cores with ground loop isolators. Ferrite cores remove high frequency noise from cables and prevent the cables from acting as radio antenna - specifically they remove the radio frequency signals associated with the tiny sparks created across switches that gets broadcast as noise.
See http://en.wikipedia.org/wiki/Ferrite_bead for more details.
Julian
P.S. Going to have to get me some of these, none of the USB cables used for my decks or DMX interface have these on at present.
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Originally Posted by
ukpartydj
Is it an issue?
I would say, don't worry about it, just make sure if you plug/unplug anything, make sure you turn the volume all the way down on your speakers or do it before you power them up (i.e. setting up)
Other thing to try is use a different wiring loom to power your speakers (separate from lights etc.) although this is not always physically possible and also difficult to ascertain where the 'other' loop actually is (if at all there is one).
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I used to use a suppressed switch pack a while back and that stopped all the bangs and pops.
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