Feedback Eliminator

[billyo]

Originally Posted by Roy Dennis

I have a pair of Wharfedale pro Titan 12 Active speakers, Vocopro KJ-7808RV Mixer and Kam Kwm twin radio mikes. The mixer also mixes video because I prefer to play singers own disc's from my DVD/CD Karaoke player rather than use the Disk option in Hoster.

Roy.

i'm not familiar with the vocopro mixer, since i have never used it, i know that whaferdale speakers has a mic and cd/tape input at the back of the speakers ,and also can be use as a floor monitor, but are you daisy chaining the speakers and plugging the mic in ?, whaferdale has a high and low eq's, maybe you can turn the highs down ( if your daisy chaining and mic plugged in ) and also it's best if you have them up on a speaker stand.

[Roy Dennis]

I have everything plugged into the mixer, from the mixer I usually use left channel to one speaker, right channel to other, sometimes I daisy chain depending on the location. Left & right channels to one speaker then output from that speaker to the input of the other one. they are on speaker stands. I can control the feedback by adjusting the high & low frequency or the gain on the Mic's on the mixing board.
It is just that I wondered if these Eliminators were any good, by your first answer I see you are not impressed with them.
If I don't get any positive responses to this I will dismiss the idea of using one.

Thanks for your response.

Roy.

[billyo]

Originally Posted by Roy Dennis

I have everything plugged into the mixer, from the mixer I usually use left channel to one speaker, right channel to other, sometimes I daisy chain depending on the location. Left & right channels to one speaker then output from that speaker to the input of the other one. they are on speaker stands. I can control the feedback by adjusting the high & low frequency or the gain on the Mic's on the mixing board.
It is just that I wondered if these Eliminators were any good, by your first answer I see you are not impressed with them.
If I don't get any positive responses to this I will dismiss the idea of using one.

Thanks for your response.

Roy.

sorry, i'm not really impressed with feedback eliminator, due to what i've seen from a fellow kj.. don't take my word for it.you can try it, if you buy one make sure to check the return policy, just incase you decided to return it..

[madjim- with the Lord]

Hey Roy,
Being able to run pro sound is one of my curse/blessings. I have never used a feedback eliminator because they basically do what you can do with your board and a good EQ. The first factor is like you said, getting the singer to keep the mic close to their mouth. The second factor like you said is teaching then to keep their back to the speaker. The third factor is the overall volume and the fourth factor is finding the frequenccy that is giving you feedback and turning it down on the main EQ.

Here is something you can do that will help. When you get set up, run a sound check. Have somebody stand in the worst place with the mic open and turn the overall (main) volume up some. This will kick up the feedback. Once the feedback is ringing, start pulling down the EQ faders on your main EQ (32 band if possible). When You find the frequency that is causing the feedback pull that fader down and pull the faders on either side of it down just a bit. After this is done you should be able to turn the main volume down to a resonable level and make your EQ adjustments on the channel EQ's to tweek it in. By doing this you are doing what the feedback eliminator does. Oh, when folks hear the feedback, be sure to announce that they are all now sterile. This always gets a chuckle.

I Hope This Helps

Jim

[Roy Dennis]

Thanks for your information Jim. I will do some experimenting over the next few days, see if I can pinpoint the worst frequencies. Save myself a few £ at the same time.

Roy.

[madjim- with the Lord]

All the feedback eliminator does is locate the problem frequency, turn it down then turn down. You still have to adjust the main volume and EQ on each channel to tweek it in. They don't pay for themselves IMHO.

Jim

[Lonman]

Problem is with the eliminators is that how it works is it senses frequency spikes basically over a certain threshold & will cut that frequency. Now what can happen is you get a powerful singer that can naturally create these spikes without it actually being feedback, but it will still cut those frequencies which actually starts harming the sound. The cheaper ones like the Behringer are pretty much worthless in this respect. There are others that are a little spendy that actually work well when set correctly. Sabine makes a decent one & dbx also has a pretty decent one.

A good 31 band eq can be very effective & along with Jim, the ringout of the system needs to be done 3-4 times until you are at the typical volume level you would be running. Also when pulling those frequencies down, I also pull down the 2 adjacent frequencies a smidge.