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Frequency Response Confusion

Discussion in 'Speakers' started by FrankieD, May 15, 2003.

  1. FrankieD

    FrankieD Member

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    I’m confused about the two Frequency Response ratings on speakers. They are:

    Frequency Response
    Low Frequency Extension

    I have been looking at the Paradigm CC-270 and CC370 center speakers.
    The stats for the CC-270 are 70 Hz - 20k Hz Frequency Response, and 50 Hz Low Frequency Extension.
    The stats for the CC-370 are 100 Hz - 20k Hz Frequency Response, and 57 Hz Low Frequency Extension.

    Which response is the bottom end? Does this mean that the CC-370 does not create sound lower than 100 Hz? If that is the case, the cheaper CC-270 would “technically” cover the frequency spectrum better. Any clarification would be greatly appreciated.

    Also, does anyone know if either of these speakers can be Bi-Wired?

    Frank
     
  2. Brett DiMichele

    Brett DiMichele Well-Known Member

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    Don't make much sense to me... When you list the FR of any
    speaker you list it as the lowest it will extend and the
    highest it will extend before rolloff.. I have no idea what
    that "Low Extension means" ????

    Weird maybe some Paradigm owner may know (I think we have
    a "few" owners here) [​IMG]
     
  3. Terry St

    Terry St Well-Known Member

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    When you look at a frequency response range, e.g. 70Hz. to 20Khz., always look for a qualifier like +/- 2dB. This tells you that they can cover that range with consistant volume. (i.e. They will reproduce everything in that range within 2 decibels of the volume it is supposed to be.) In the CC-270's case, the low frequency extension is accompanied by this note: (click on the star next to it on their site)

     
  4. Scott Sabin

    Scott Sabin Well-Known Member

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    Frankie,

    The first set of specs are the +/- 3 dB points, while the low frequency extension is the point where the magnitude is down to -8 or -10 dB. This has been "defined" by some manufacturers as the "useable bass" point, tyring to tie a number to the frequency content that you can still audibly notice.
     

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