My sonosub output levels

Discussion in 'Home Theater Projects' started by JoelTW, May 7, 2003.

  1. JoelTW

    JoelTW Stunt Coordinator

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    I measured my output levels in my 12x12' room [​IMG]


    These are "corrected" values

    100 dB @ 10 Hz
    119 dB @ 15 Hz
    113 dB @ 25 Hz
    103 dB @ 50 Hz
    107 dB @ 100 Hz

    so do I need a BFD? [​IMG]
     
  2. JoelTW

    JoelTW Stunt Coordinator

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    Should I do a graph of every 5 Hz? Should I measure 1 meter or from listening position?
     
  3. Justin Ward

    Justin Ward Supporting Actor

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    119dB at 15hz is quite impressive. Your upper bass numbers seem a little lower than the deep bass(35-15hz). You might want to try other spots in the room.
     
  4. JoelTW

    JoelTW Stunt Coordinator

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    hehe...yeah, I was wondering how accurate the RS SPL meter was... :b ... I added 20 dB to 15 Hz as suggested by the correction values.

    I can't think of another place to put my subwoofer currently, though [​IMG]

    I'm gonna re-measure it in the corner
     
  5. I wouldn;t worry about any spot other than the place you are sitting at most.

    If you click on my sig file, there are 1/12th octaves tones. If you can generate your own, I'd get measurements with atleasts 1/6th octave to be usefull.
     
  6. JoelTW

    JoelTW Stunt Coordinator

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    Thanks Anthony!

    Check out my new graph with all of your test tones... I just remembered those other test tones were not in the corner :b


    tell me if I need an EQ [​IMG]
    Click for graph
     
  7. NP.

    you only have one glaring problem...the suckout at around 37hz. try moving the mic around about 1ft away from the spot the other measurements are at (should be listeneing position). This way we can see if it is a wide area null, or just a localized on.

    if the responce is wide area, you may want to experiment with moving the sub around. Have you tried modeling your room on the RRC from the "FRD Consortium"? (google it)



    actually, the first thing should be: how does the system sound right now? [​IMG] You can almost always benifit from a BFD....but why get one if you are completely happy with how it "sounds"
     
  8. Allen Ross

    Allen Ross Supporting Actor

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    meah i say if you got the money do it. you can pull up that dip along with other ones. also latter on if you get a second sub for stictly music then you can still have it EQed, more the marrier.
     

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