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Topic: Your PA Feedback Problems Solved..... |
John Paul Jones
From:
San Diego
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Posted 22 Jul 2001 4:53 pm |
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I hate feedback problems.
But, now there are devices on the market that eliminate feedback automatically.
One is the Sabine Feedback Exterminator. It works great, but is quite expensive.
Another is the Behringer Feedback Eliminator. It also works great. This one is the best dollar value -- in my opinion -- on the market today.
The one I use WAS the best value, but I don't think they are commercially available anymore. It is a Roland Anti-Feedback AF-70.
Don't confuse these devices with graphic equalizers. These devices are light-years ahead of graphic equalizers.
Besides, graphic equalizers change your sound. These devices do not.
If your band is having feedback problems and doesn't have an anti-feedback device you are being left behind by todays technology, and you are agonizing needlessly.
I just wanted to make you aware of these devices in case you didn't already know.
John Paul Jones
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John Floyd
From:
R.I.P.
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Posted 23 Jul 2001 10:54 am
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I use two Behringer Feedback DESTROYERS in my PA rig, 1 on the Mains and 1 on the monitors. Best bang for the buck and they WORK. Best price I've seen is $159.95 at Guitar Center or Musician's friend
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John
[This message was edited by John Floyd on 23 July 2001 at 11:54 AM.] |
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Bobby Lee
From:
Cloverdale, California, USA
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Posted 24 Jul 2001 11:44 am
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| I have a small Behringer mixer, and I'm very happy with the quality of construction and design. Their prices are always very competitive. They're a first class manufacturer, IMHO. |
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D Schubert
From:
Columbia, MO, USA
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Posted 24 Jul 2001 12:38 pm
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| We use the Behringer FBX in our PA system for all accoustic applications -- bluegrass band, I'm playing mandolin and Dobro -- with eight SM-57's & 58's. Or more recently with two large-diaphragm AGK-3000's. The two large-diaphragm mics give us a much more natural sound and force us to move around like the old-timey radio band, which engages the audience. But they have such a wide pickup field that you can't use monitors and the audience has to be reasonably quiet (ie, no good in smokey neon-lit whoopin' hollerin' stompin' honky tonks). The FBX does not solve every feedback problem that we run into, but it generally gives us another 3-6 dB of volume before across-the-board feedback sets in. For an all-accoustic band that's a big advantage. A mighty improvement over a 15- or 31-band EQ for controlling feedback. |
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Danny Hullihen
From:
Harrison, Michigan
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Posted 2 Aug 2001 2:26 am
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| Peavey Electronics has some very nice EQ systems available that incorporate a system they call, "FLS" (Feed back Locating System) This system works by pin pointing the frequency(s) that is causing the feed back, and a small L.E.D. lights up on the slider showing you exactly where the feed back is coming from. A small adjustment to the slider, and the feed back is eliminated. |
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John Floyd
From:
R.I.P.
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Posted 2 Aug 2001 3:09 am
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Danny
The Behringer units adjust the filter width automatically all the way down to 1/60 th of an octave and Automatically locate the problem Frequencies. The Peavey units are Great for Locating what frequency is causing the problem, but on a 31 band equalizer, the filter width would be almost twice as wide or 1/31 of an octave. These automatic units such as the Behringer Feedback Destroyer leave a minimum of "Holes" in the overall spectrum. Non of these units will compensate for a bad setup such as a room that is too live or a Mic in front of a main speaker, but they stop feedback you get in a lot of instances, like a singer moving around too much with a live mic. I have seen instances where the Behringer unit would eliminate feedback under almost impossible conditions, but the result was that it sounded like the singer was singing thru a garden hose.
Everything has its drawbacks, but the key to sucess with any type of feedback cancelling device is to start with a good setup, so its job will be minimal. Hope this helps
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John
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D Schubert
From:
Columbia, MO, USA
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Posted 2 Aug 2001 6:00 am
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| John, that "garden hose" comment is right on! The first night we used ours, we had pushed it so hard -- and triggered so many filters -- that almost nothing was coming out of the speakers by the 3rd set. It's funny now, but I was dying at that particular moment. We have also had good luck running just the monitors through our FBX, and leaving the mains alone, on some stages. |
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