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yet another exhaust question

Discussion in 'Technical Q&A' started by snj5, Feb 16, 2007.

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  1. snj5

    snj5 F1 World Champ

    Feb 22, 2003
    10,213
    San Antonio
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    Russ Turner
    #1 snj5, Feb 16, 2007
    Last edited by a moderator: Sep 7, 2017
    Comparing two systems of two absorbtive mufflers, both with the same total volume of absorptive material. The case volumes in "A" are unequal, and the case volumes in "B" are equal.

    How would the sound attenuation (loudness) and tone (high vs low pitch) vary between "A" and "B", if at all?

    Many thanks
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  2. MufflerMan

    MufflerMan Formula 3

    Jun 12, 2005
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    Colby Sandman
    #2 MufflerMan, Feb 16, 2007
    Well, I would love to answer you with some kind of NASA sounding research worthy hypothesis, but cannot (I am sure someone else here will). I will say from experience they will probably vary a bit in tone only because I have had customers tell me that similar installs we have done have made a difference. Maybe the expansion of the heated exhaust gas in the first one matters as it makes it into the second one cooling down as it goes farther from the source.
     
  3. snj5

    snj5 F1 World Champ

    Feb 22, 2003
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    Russ Turner
    #3 snj5, Feb 16, 2007
    Cool - from your experience, which would have the quieter tone, and what is the best way to get a deeper tone?
    Many thanks

    rt
     
  4. MufflerMan

    MufflerMan Formula 3

    Jun 12, 2005
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    Colby Sandman
    #4 MufflerMan, Feb 17, 2007
    Go with B. Deeper and quieter.
     
  5. snj5

    snj5 F1 World Champ

    Feb 22, 2003
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    Russ Turner
    #5 snj5, Feb 17, 2007
    then "b" it is -- two silencers per side.
    thanks!!
     

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