What exactly is a Behringer Feedback Destroyer?

Discussion in 'Archived Threads 2001-2004' started by AaronNWilson, Oct 30, 2001.

  1. AaronNWilson

    AaronNWilson Second Unit

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    I know it is a parametric equalizer, but I can't understand why people feel that they need more than one?
    Can someone explain this process a bit further please?
    Aaron
     
  2. Zbigniew

    Zbigniew Stunt Coordinator

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    One BFD can manage 2 channels. If all you want to correct is a subwoofer, fed via dedicated .1 output from prepro, then 1 BFD is enough. If you are feeding your sub with 2 line level inputs from main channels, you will use both channels on BFD.
    When you want to correct not only sub, but also your main channels (and center, and surrounds) - because you use full size speakers for mains or all the way arround, or because you have some ugly reflections, you will need 1 BFD for each 2 channels.
    _zjt
     
  3. Rich G

    Rich G Stunt Coordinator

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    It's a very unique devise that emits a small electrical charge at someone who is giving you flack about how much you spend on your A/V system. [​IMG]
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    Rich G.
     
  4. AVspec

    AVspec Supporting Actor

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    "It's a very unique devise that emits a small electrical charge at someone who is giving you flack about how much you spend on your A/V system."
    Nice!!! I have got to get me of few of these!! How much do they cost and do you get a discount if purchased in bulk?!?
    [​IMG]
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    -Mark
    **** Digital Vortex ****
    The Digital Electronic Site
    www.digitalvortex.com
     
  5. Kevin C Brown

    Kevin C Brown Producer

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    I have been looking for one of these for the past day or two based on other threads here.
    Not having much luck finding one. I get the impression that there is a new unit coming. Was DSP-1100p, new one is DSP-1124p.
    I try my local Guitar Center today!
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  6. BruceD

    BruceD Screenwriter

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    Since the BFD actually goes through a;
    - ADC (analog->digital) stage
    - performs the filter functions in the digital domain
    - then DAC (digital->analog) stage for input to amps
    I would not want to use this unit in my main speaker signal chain.
    I use mine ONLY on the sub output of my electronic crossover (i.e. I only digitize and filter
     
  7. Kevin C Brown

    Kevin C Brown Producer

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    Any one know of the bit length/sampling freq of the BFD?
    I took a quick look on Rane's site, and at least for the PE-17, they say it's noise level is below that of other digital electronics typically used in recording studios.
    Don't know quite what that means though!
    The Rane might be completely analog though, based on just looking at the front of it.
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  8. Jerome Grate

    Jerome Grate Cinematographer

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    If you can post where I can find this it would be great.
    ------------------
    ONCE, I CONSIDERED SPARING YOUR RETCHED LITTLE PLANET CYBERTRON, NOW.., YOU SHALL WITNESS IT'S
    DISMEMBERMENT...
    MY HT PIXS
     
  9. Jerome Grate

    Jerome Grate Cinematographer

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    Never mind, I found it, Will this make a difference if I was to hook up my tape deck to this and then out to the receiver. Is it worth the 200 bucks also?
    ------------------
    ONCE, I CONSIDERED SPARING YOUR RETCHED LITTLE PLANET CYBERTRON, NOW.., YOU SHALL WITNESS IT'S
    DISMEMBERMENT...
    MY HT PIXS
     
  10. Merconium

    Merconium Agent

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    I thought it was the big ship at the opening of Star Wars....
     
  11. Wayne A. Pflughaupt

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    The BFD is a cut-only equalizer, which I find to be limiting.
    For instance, many subs are a little weak at 20-25Hz. After you cut one or two response peaks, typically in the 40-60Hz range, you “buy” some headroom for your sub, since it is not working as hard at those frequencies. Many times you can then boost a few dB in the 20-25Hz range, if needed, without fear of overdriving the sub.
    For instance, after cutting a 40Hz peak in my subs by 9dB, I was able to then apply a 6dB boost at 25Hz. This gave me solid response all the way down to 20Hz, something I would have not been able to do with a BFD.
    Regards,
    Wayne A. Pflughaupt
    ------------------
    My Equipment List
     
  12. jeff peterson

    jeff peterson Supporting Actor

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    Wayne, I thought you cut the frequency that's been boosted; ie, 40-60 hz. so that your response is now flat and then boost the sub's volume control. Now all frequencies are equally amplified.
     
  13. Kevin Golding

    Kevin Golding Stunt Coordinator

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    Jerome,
    Where did you find one?
     
  14. Sundar Prasad

    Sundar Prasad Stunt Coordinator

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    Wayne,
    Sorry, but you're wrong about the BFD being a 'cut-only' unit. Although it does cut only when it is doing feedback destruction (obviously), as a parametric eq. it does both cut and boost and very well at that. I know because I use it in my system and have a sealed Shiva sub dialed in flat (+/- 2 db from 18 Hz to 80 Hz). IMO the BFD or any good parametric eq. is a must have if you're serious about accurate bass. The BFD simply is the best bang for the buck out there.
     
  15. Kevin C Brown

    Kevin C Brown Producer

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    The BFD can do +16 to -48 dB adjustments.
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  16. Wayne A. Pflughaupt

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  17. Jerome Grate

    Jerome Grate Cinematographer

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    Kevin Goldberg, I'll post it in a few.
    ------------------
    ONCE, I CONSIDERED SPARING YOUR RETCHED LITTLE PLANET CYBERTRON, NOW.., YOU SHALL WITNESS IT'S
    DISMEMBERMENT...
    MY HT PIXS
     
  18. Jay Mitchosky

    Jay Mitchosky Producer

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    What is the best price on the BFD Pro? Suggestions for online retailers?
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    --Jay
    "No one can hear when you're screaming in digital."
    My Home Theatre Pictures...
    "You're no messiah. You're, you're a movie of the week. You're a ... t-shirt, at best."
     
  19. Jerome Grate

    Jerome Grate Cinematographer

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    Try these locations:
    sight one
    sight two
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    ONCE, I CONSIDERED SPARING YOUR RETCHED LITTLE PLANET CYBERTRON, NOW.., YOU SHALL WITNESS IT'S
    DISMEMBERMENT...
    MY HT PIXS
    [Edited last by Jerome Grate on October 31, 2001 at 10:48 AM]
     
  20. AaronNWilson

    AaronNWilson Second Unit

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    Wow 179 bucks, that is about 80 bucks more than I was willing to spend [​IMG].
    Aaron
     

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