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Maplin spl meter + Mordaunt Short speaker set up

Discussion in 'Subwoofers' started by dazzer123, May 30, 2004.

  1. dazzer123

    dazzer123
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  2. MarkE19

    MarkE19
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    I use the Maplin SPL meter and seems to work ok for me!

    No, its a doddle to use.

    From your normal seating position :devil:
    Set the meter to 'slow response' & 'C weighting'
    Point it at the screen, but angled slightly upwards.
    Set the test tones off for each speaker from either the receivers internal tones or a DVD such as Avia or DVE.
    Adjust each speaker level to 75db. Don't move the SPL around, just keep it facing the screen.

    and that is all there is to it :smashin:

    Mark.
     
  3. Nimby

    Nimby
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    Does it react to a subwoofer at all? :confused:

    (It claims a 300Hz minimum response frequency)

    Nimby
     
  4. MarkE19

    MarkE19
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    Yes, but like ALL SPL's (unless going for pro gear!) it is inacurate at bass frequencies.
    For my sub I set it with the SPL first and then adjusted by ear as the sub was far too loud at 75db on the SPL.

    Mark.
     
  5. dazzer123

    dazzer123
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    well i have to admit i am a little bemused by the 300hz statment i wanted the meter mainly to set up the notch filter on my mordaunt short 309 sub and the test tones on the supplied set up disc start at 17hz now that is barley audible to me so i dont know if the meter is going to pick it up.
     
  6. Ed Selley

    Ed Selley
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    The beauty of the notch filter is that it is trying to cancel out a peak that is plainly audible to you. Most SPL's generally register the spike when the volume is at 50% because of the huge increase in resonance from the room. I suspect that you won't have a problem.
     
  7. dazzer123

    dazzer123
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    Cheers tons so if the meter does not pick up the 17hz to say 24hz signals i should not worry and just start using the reading's it gives me from 27hz onwards and filter out the peaks from there.
     
  8. Ed Selley

    Ed Selley
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    That's the theory- if your house was built in the second half of the 20th century, the (main) resonant point will normally be between 40 and 70hz anyway.
     

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