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mackey 450s rf problem
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Author:  bbqbutch [ Sat Oct 23, 2004 3:24 pm ]
Post subject:  mackey 450s rf problem
i have one guy that has a great ear for sound . he told me he hears a bad rf sound from my speakers and i heard it to it a loud pearsing sound when i get close to my speakers were can i look tryed unpluging 1 thing at a time but cant find it help
Author:  Lonman [ Sun Oct 24, 2004 1:16 am ]
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Can you puncuate your question a little better?
Author:  bbqbutch [ Sun Oct 24, 2004 10:50 am ]
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sorry im a retard but could you help lonmon ? i know you used these speakers befor . would love some help
Author:  bbqbutch [ Sun Oct 24, 2004 12:22 pm ]
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before sorry
Author:  Lonman [ Sun Oct 24, 2004 1:57 pm ]
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RF sound? Are you hearing static, or hum or something else. Can you describe it a little clearer is what i'm getting at.
Describe your system - mixers, processing, etc. Using wireless mics or wired? Now what exactly are you hearing.
Author:  metalgod [ Sun Oct 24, 2004 2:40 pm ]
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I think he is hearing a pearsing sound............
Author:  bbqbutch [ Sun Oct 24, 2004 2:52 pm ]
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its kind of a ouiet pearsing sound . im using mackey dfx 12 mixer wired mikes disk changer vovopro g1 decoader . i tried pluging in 1 thing at a time to find it but it seems like it comes and goes today i could not find it could it be in the speaker
Author:  Lonman [ Sun Oct 24, 2004 5:22 pm ]
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Does the system get moved around from place to place. Have you heard it at other places or just 1. By piercing sound, i'm assuming a high pitch squeal>>?
Author:  bbqbutch [ Mon Oct 25, 2004 5:01 pm ]
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yes i heard it other places too .and i tried another mixer same results when i have my mixer off the sound is real loud .when i turn my mixer on it is much less tried diffrent outlets too
Author:  Lonman [ Mon Oct 25, 2004 5:25 pm ]
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When you unplug the XLR cord from the speaker (no connection other than being plugged in & turned on), do you still hear it?
Author:  1chaz [ Mon Oct 25, 2004 5:34 pm ]
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BBQ, I have a couple of solutions for you..
First thing to check is a grounded outlet. be sure you are grounded otherwise lights neons even wireless products will interfere through electricity... dont know how old you are but i remember when i was young my mom would vacumn and the tv would get all fuzzy. same concept here...
also effects and effects strips will make a problem. does your mixer have built in effects? Usually adding a hum/eliminater or plugging into a different outlet sometimes helps.. At my home I get a lil buzz/hum because our wiring is older in the home I eliminated that by getting a grounded outlet plug. It turns a 3prong plug to a 2 prong plug..
those are just a couple of things to check and eliminate ....
chaz
Author:  Lonman [ Mon Oct 25, 2004 5:40 pm ]
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1chaz wrote:
At my home I get a lil buzz/hum because our wiring is older in the home I eliminated that by getting a grounded outlet plug. It turns a 3prong plug to a 2 prong plug..
chaz


While this works, it shouldn't be used as a permanent situation for safety reasons. It is basically eliminating the ground altogether when you do that which can bring on a pretty nasty shock.

I'd give an address explaing the danger issues regarding that, but I had it up once & they don't want links about "safely removing ground loops" without dropping the ground prong on this site & deleted it.
Author:  1chaz [ Mon Oct 25, 2004 5:56 pm ]
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I agree It is not a permanent solution but if fyou go to a venue that has a lil hum and it disturbs you. I would use it. Of course you dont ever want to use it on a outlet that is over loaded, then you are just asking for trouble..

chaz
Author:  Lonman [ Mon Oct 25, 2004 6:04 pm ]
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1chaz wrote:
I agree It is not a permanent solution but if fyou go to a venue that has a lil hum and it disturbs you. I would use it. Of course you dont ever want to use it on a outlet that is over loaded, then you are just asking for trouble..

chaz


I understand that, & I have used it myself for an evening if I don't have the proper equipment. The next time I show up at the problem show, I make sure I don't have to do the ground tab removal, it will be safe.
Author:  1chaz [ Mon Oct 25, 2004 6:12 pm ]
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also i failed to mention Sheilded( did i spell that right...lol)
wires and coaxile.... if you use the cheap stuff as with alot of things you get what ya pay for....That could solve a many of problems...
Author:  bbqbutch [ Wed Oct 27, 2004 4:10 pm ]
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no it sounds quiet when nothing pluged in.when i plug everything in and the mixer is off i get a lot of kink of loud hum but when i turn the mixer on noise goes away .. im going to run a new electric line this weekend to see if it helps ... dont know what else to do i will try the ground plug untill i get the new line ran thanks if you think of anything else let me know
Author:  Lonman [ Wed Oct 27, 2004 5:07 pm ]
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Now that you've stated it sounds like a "hum", it's more than likely a grounding issue or a bad cord. Get an outlet tester from Rat Shack & test the outlets where you are plugging in your equipment. Removing the ground prong will more than likely silence the hum - but remember it is a dangereous move that if the conditions are right, could kill!

Are you using XLR cords (mic cords) from the mixer to the speaker? If so, you may want to try some new ones (if it works, it's a cheap fix, if not it never hurts to have back up mic cords). If you aren't using the XLR cord, then get a set to run from the mixer to speaker - (again if it works....cheap fix, if not, B/U mic cords).

If your speakers are quiet when nothing is plugged into them, then you can pretty much exclude them from being the culprit.
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