BFD Equalisation question

Discussion in 'Archived Threads 2001-2004' started by Willem Vos, Mar 16, 2003.

  1. Willem Vos

    Willem Vos Stunt Coordinator

    Joined:
    Nov 14, 2000
    Messages:
    227
    Likes Received:
    0
    Trophy Points:
    0
    Hi guys,

    I've got a question about my BFD. I had set some filters, and was testing them with a Test-CD.
    At some point the Test-tone started playing (at the point where I had set the filters), but it sounded like the BFD started EQ-ing too late, because it went loud then suddenly soft, like it had trouble EQing the sound.
    Is this normal? I did have two filters set very close to one another...
     
  2. Stephen Dodds

    Stephen Dodds Second Unit

    Joined:
    Aug 29, 1998
    Messages:
    354
    Likes Received:
    0
    Trophy Points:
    0
    ARe you trying to boost or cut. If you are applying a bosst to a boost (which is generally a bad thing anyway), you may have overloaded the digital section.

    Steve
     
  3. Wayne A. Pflughaupt

    Joined:
    Aug 5, 1999
    Messages:
    6,130
    Likes Received:
    40
    Trophy Points:
    6,610
    Location:
    Katy, TX
    Real Name:
    Wayne
    Are you trying to use the auto EQ function (someone correct me if it doesn’t have one)? If so, this is not the way to do it. The EQing needs to be done manually

    Regards,
    Wayne A. Pflughaupt
     
  4. Willem Vos

    Willem Vos Stunt Coordinator

    Joined:
    Nov 14, 2000
    Messages:
    227
    Likes Received:
    0
    Trophy Points:
    0
    No I was trying to go the manual way, I had two filters, both set at PA.

    I don't think I'm using the AUTO-EQ that way... How can I be sure?
     
  5. Willem Vos

    Willem Vos Stunt Coordinator

    Joined:
    Nov 14, 2000
    Messages:
    227
    Likes Received:
    0
    Trophy Points:
    0
    bump
     
  6. Sonnie Parker

    Sonnie Parker Second Unit

    Joined:
    Dec 11, 2001
    Messages:
    407
    Likes Received:
    0
    Trophy Points:
    0
    I don't believe the BFD has an Auto-EQ.

    What exactly are your filters?

    Frequency?
    Bandwidth?
    Cut or Boost?

    I'm assuming your test tone CD is okay since you would have used it to measure your pre BFD response. Have you listened to the sub with music or a movie?
     
  7. Willem Vos

    Willem Vos Stunt Coordinator

    Joined:
    Nov 14, 2000
    Messages:
    227
    Likes Received:
    0
    Trophy Points:
    0
     
  8. Vince Maskeeper

    Vince Maskeeper Producer

    Joined:
    Jan 18, 1999
    Messages:
    6,499
    Likes Received:
    0
    Trophy Points:
    0


    Lol- the entire point of the BFD for the real world is automatic seeking of feedback frequecies and eqing them away. It not only has the ability to do "auto" moves- but that's half the point it was built.

    -V
     
  9. Sonnie Parker

    Sonnie Parker Second Unit

    Joined:
    Dec 11, 2001
    Messages:
    407
    Likes Received:
    0
    Trophy Points:
    0
    I stand corrected for what it might be worth.

    William, I suppose if you have feedback frequencies you could set the BFD to auto pilot and let it get rid of them.

    Just kidding....

    Suffice it to say, for the purpose you will use the BFD you probably won't be needing the auto-EQ, as the entire point for those using the BFD here in this forum is not automatic seeking of feedback frequecies.

    I suppose maybe this forum isn't the "real world".
     
  10. Vince Maskeeper

    Vince Maskeeper Producer

    Joined:
    Jan 18, 1999
    Messages:
    6,499
    Likes Received:
    0
    Trophy Points:
    0


    Sorry- should have been more clear. The Behringer Feedback Destroyer was designed for professional audio applications, in order to automatically destroy feedback. I've been working in Pro sound for about 10 years, and so usually see the BFD as something that comes more from that world (although, Ironically, it is really not too popular there).

    Again- apologies. My point was just that the BFD very much does have an automatic mode, and the manual filters were more of an afterthought (guess HT folks lucked out).

    -Vince
     
  11. Sonnie Parker

    Sonnie Parker Second Unit

    Joined:
    Dec 11, 2001
    Messages:
    407
    Likes Received:
    0
    Trophy Points:
    0
    No apologies necessary for me Vince... I understood where you were coming from. I probably should have made myself a little more clear. At the time though, I wasn't thinking (duh me!) along the lines of what is the original intent of the BFD. Although I do mention the original intent of the BFD in the BFD Comprehensive Setup Guide.

    From the Guide page (notice I mention auto pilot-lol):
     
  12. Willem Vos

    Willem Vos Stunt Coordinator

    Joined:
    Nov 14, 2000
    Messages:
    227
    Likes Received:
    0
    Trophy Points:
    0
    Well, I tried resetting the filters, but the "occurrence" [​IMG] did not happen again, so I guess it solved itself...
    Could this have been due to setting one large filter? I read the BFD manual and it said it was better to divide one large filter into several smaller ones...
     
  13. Sonnie Parker

    Sonnie Parker Second Unit

    Joined:
    Dec 11, 2001
    Messages:
    407
    Likes Received:
    0
    Trophy Points:
    0
    I don't see how one large filter could cause the problem you experienced, none the less, it's gone so I wouldn't worry.

    My experience has been that with wider unequal peaks that several smaller filters work better than one large one. You can pin point the affected areas better and have better control.
     

Share This Page