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| Got a feedback problem Please help https://mail.karaokescene.net/forums/viewtopic.php?f=1&t=19168 |
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| Author: | igh70 [ Mon Mar 08, 2010 8:27 pm ] |
| Post subject: | Got a feedback problem Please help |
OK my amp finally came in today so I thought I would test out the new system.... I hooked up the speakers and the laptop and I was getting some feedback playing songs. I unplug the computer from the wall and the feedback goes away... If it is plugged into the wall I get feed back... OK so I unplug from wall so that I could run my karaoke program and try out the mics and such..... But when I hook up the VGA cable and run it to the 2nd monitor I get feedback again... Not as bad as when the computer is hooked to the wall but it is still there....... the AMP is a Behringer model europower pmp2000 the laptop is brand new and so is the power strip that i use to plug into I even got feedback when I moved straight to the wall at a diffenert outlet then the amp Please help Mark |
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| Author: | johnny reverb [ Tue Mar 09, 2010 8:51 am ] |
| Post subject: | Re: Got a feedback problem Please help |
Go to a hardware store, buy two 3 prong to two prong adapters(2 for a buck or so), and use these as a test/tempory solution. Put them on the computer plug, and the second monitor, one or both to see results. If the monitor has speaker/s, they must be "muted"......."do not break off any gound prong", on a plug, and most people on here would urge you to buy a ground lifting device, as apposed to using the 3 to 2 prong adapter....ps...if there is any other signal(tv/cable)....comming into the system, it must be prevented from entering the configuration.....hope this helps |
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| Author: | mrmarog [ Tue Mar 09, 2010 8:59 am ] |
| Post subject: | Re: Got a feedback problem Please help |
Hi Mark, I think this subject was covered very recently. I don't think that "feedback" is what you are having (or hearing), I think you are having a ground issue and are experiecing a "hum". Isolating the ground or making sure everything is plugged into (1) outlet should fix the probem. By isolating, I mean, puchase a (3) prong to (2) prong power cord adapter. Does your laptop have a (3) prong power cord? If so, then that has been an issure for many laptop owners. Mrmarog |
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| Author: | johnny reverb [ Tue Mar 09, 2010 9:11 am ] |
| Post subject: | Re: Got a feedback problem Please help |
you could actually get a feedback problem from a tv/monitor with the volume on, but yes, sounds like he has some ground looping going on.....  anyway, at his stage, it doesn't matter what it's called.....it just needs to be gone.... 
also he should get on the internet, and find some diagrams of proper speaker placement.......good luck.... |
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| Author: | igh70 [ Tue Mar 09, 2010 12:29 pm ] |
| Post subject: | Re: Got a feedback problem Please help |
Just wanted to stop in and tell everyone Thank You.... I ran to Radio Shack and got a Ground Loop Isolator for $16.99 and It has fixed all the problems..... Everything is up and running. Sad part is I have used these before in car setups and didnt even think to grab one for this DUH 
Once again Thanks to all who helped out. Mark |
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