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Radio Shack meter corrections??

Discussion in 'Archived Threads 2001-2004' started by JimmyK, Dec 27, 2002.

  1. JimmyK

    JimmyK Second Unit

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    Jim
    Wasn't sure where to post this. Sorry if it's in the wrong place.

    Anyway, I keep hearing statements like "...after correcting for the Radio Shack meter, I acheived a flat response....." but have never seen anything that describes what these corrections might be.

    I have a digital Radio Shack meter that I use to calibrate my system. I am getting ready to set up a new sub and will be using this meter.

    What corrections do I need to know about?

    Thanks.

    JimmyK
     
  2. PaulT

    PaulT Supporting Actor

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  3. JimmyK

    JimmyK Second Unit

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    Thanks Paul!

    Can you recommend a good CD/DVD for setup/checking response? I have Avia, Video essentials, and an old Denon CD that has some tones and sweeps (I believe) on it. You think any of these would suffice?

    JimmyK
     
  4. PaulT

    PaulT Supporting Actor

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    If you can burn CD's you could download the low freq sine waves from this site in bin/cue format:
    http://www.geocities.com/frequency_wave/
    rename the zip foles to .ace
    or get your own Tone Generator and make your own:
    http://www.nch.com.au/tonegen/
    As far as Calibrating your Sub, there isn't much you can do besides adjust the crossover point to your mains for the smoothest response. I was able to plot the freq response of my sub using 1/6th Octave Tones (sine), however, the Room itself played the biggest part of the curve and without hanging things on the wall or building bass traps (or using EQ) I have to be happy with the way things are.
    It was quite interesting (and annoying to my wife and cat) to do the plots.
     

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