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Dirty-South Blues Harp forum: wail on! >
Behringer Feedback Eliminator (dsp1124p)
Behringer Feedback Eliminator (dsp1124p)
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residenthooligan
7 posts
Feb 22, 2009
6:58 AM
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Related to my feedback issue described the amplification thread anyone try one of these? The theory behind how these devices work is sound :)
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Scoltx
30 posts
Feb 22, 2009
8:33 AM
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I own the Behringer Shark dsp110 feedback eliminator, so can only comment on it. I imagine it has similar circuitry as the rack mount version.
Ok, I bought it when I first bought my Peavey Classic 30 amp that howled like crazy when I plugged a mic into it (a cheap dynamic vocal mic or my Shaker dynamic). At the time I didn't know anything about setting an amp up for Harp, preamp tube swaps, gain and tone control settings etc. The learning curve on the Shark was a little steep, and the supplied instruction manual was pretty much useless. After searching online for some time I learned how to set it up in learning mode. This mode allows the device to find the feedback frequencies and kill them which it does pretty well.
After you find the offending frequencies you can take it out of learning mode and you should be good to go. The problem is it effects your tone somewhat, then if you make some adjustments on the amp, some new feedback frequencies are introduced and you need to start the learning process over again. I found this to be a pain at the time and pretty much haven't played with it since.
My amp's not perfect for Harp even with tube swaps and still has a tendency to howl at bedroom practice volume, but from all the reading I've done best plan is for me to replace it with an amp with a more Harp friendly circuit.
I imagine if you played around with the Behringer and could deal with some minor feedback, you could dial it in to kill the majority of feedback for gigging so you can compete with those loud drummers/ guitarists but it will affect your tone to some degree.
From what I've heard the Kinder AFB is the device for Harp, it seems like it would be much simpler to dial in, and from a few YouTube vids I've seen with it in place it doesn't seem to kill the tone.
Here's Ben Bouman with a stock Fender Pro Jr.
http://www.youtube.com/watch?v=ci7QhJnXieo
And of course Jason Ricci has one in his rig.
But the price for the Kinder AFB is a little stiff IMHO.
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MrVerylongusername
159 posts
Feb 22, 2009
8:36 AM
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I've used both the rackmount units (as an insert on across vocal and harp channels on the mixing desk) and the mini-inline version the Shark, which I've used between harp mic and amp.
Both are very effective and because they they knock out very narrow freq. bands, they have minimal effect on tone.
Very useful tools. I've also used a Proel Predator. I found it much, much harder to setup than the very straightforward Behringer.
Remember to effectively use these tools, you actually need to ring out your setup - forcing feedback so the units can knock the frquencies out. The Behringer has fixed filters and 'floating' ones. The fixed ones stay set, whereas the floating ones are always seeking new feedback frequencies.
The only other word of caution about all these feedback eliminators is that (particularly with harp) the filters very quickly get set and leave no free ones for new feedback frequencies. You really can't rely solely on these units. Some understanding of using EQ and mic position to reduce feedback is an absolute necessity.
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residenthooligan
9 posts
Feb 22, 2009
7:56 PM
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Mine is on order :-D
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