Input level for BFD

Discussion in 'Speakers & Subwoofers' started by Richard_M, Jan 17, 2004.

  1. Richard_M

    Richard_M Second Unit

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    Does anyone know how important the input level is for the BFD.

    The reason I ask is that there has been a fair bit of discussion in the past that one should reduce the output of the Pre/Pro lfe channel to reduce distortion and raise the gain on the sub for calibration. If there is a BFD in the chain can this practice affect the performance of the BFD? I had also heard that the BFD may cause its own distortion thru lack of drive.

    Richard
     
  2. Wayne A. Pflughaupt

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    You're correct, Richard. The BFD has to have an adequate input signal or else the A/D converters distort badly - that quantization thing with low-level signals. Worse case, the converters simply won't activate (for lack of a better word) at all.

    Regards,
    Wayne A. Pflughaupt
     
  3. Richard_M

    Richard_M Second Unit

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    Thanks for the reply Wayne,

    My Denon LFE channel goes from +/- 15 (I think) and at the moment I am running it a -2, do you think I should up it into the plus side?

    Regards,


    Richard
     
  4. Wayne A. Pflughaupt

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    You might want to check the "Setting Input Levels" section of the BFD Comprehensive Set-Up Guide.
    http://www.snapbug.ws/bfd.htm

    Regards,
    Wayne A. Pflughaupt
     
  5. Richard_M

    Richard_M Second Unit

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    Thanks Wayne,

    Will set the levels this weekend

    Richard
     

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