SVS Calibration - newbie question

Discussion in 'Speakers' started by Brian Elwood, Sep 16, 2004.

  1. Brian Elwood

    Brian Elwood Stunt Coordinator

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    I was running the 20-30PCi through Avia and noticed that around 70Hz the SPL dropped off, then came back at 60Hz.

    Is there a way to fix that? Is that crossover?

    20Hz? perfect, and AWESOME!

    I place the monolith in 4 different spots and this seems to be the best . . .at the moment.

    BTW - new stands are next and after those you will start hearing questions about new surrounds.

    [​IMG]
     
  2. Allen_N

    Allen_N Stunt Coordinator

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    It could be the crossover. What do you have it set to? It could also be room issues. I would try setting it to 80hz.
     
  3. Edward J M

    Edward J M Cinematographer

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    Try adjusting the phase control and re-running the Avia sweep. Try 180, and 90 first. Then try to hone in on any possible sweet spot in 15 degree increments. Some drop-outs can be corrected with phase; others can't.

    The only way to really tell what is happening in the room is to plot the FR with some test tones, the SPL meter, and a spread sheet with correction factors.
     

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