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Reload Thread: Which put outs more SPL?

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    supraman1379's Avatar
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    Which put outs more SPL?

    Does a lower Hz put out more SPL or does a higher Hz put out more SPL



    Ride: 2001 Ford Ranger
    Color: Red
    Head Unit: Kenwood 52x4
    Speaker Amp: JL Audio e4300
    Front Speakers: Kicker 4x6
    Rear Speakers: Stock
    Sub Amp: Bostwick 1100 (1100 RMS @ 1ohm)
    Subs : (2) Kicker CVR 15's
    Enclosure: 4.3 Cubes per chamber tuned o 32hz
    AudioControl - 145.9 dB
    TermLab Mic - 145.6, 146.0, 142.5(mic was messed up)
    Videos
    http://s108.photobucket.com/albums/n...Picture009.flv
    http://s108.photobucket.com/albums/n...Picture011.flv




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    supraman1379's Avatar
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    Re: Which put outs more SPL?

    Because i have a cd with test tones, steps, sweeps, and burps



    Ride: 2001 Ford Ranger
    Color: Red
    Head Unit: Kenwood 52x4
    Speaker Amp: JL Audio e4300
    Front Speakers: Kicker 4x6
    Rear Speakers: Stock
    Sub Amp: Bostwick 1100 (1100 RMS @ 1ohm)
    Subs : (2) Kicker CVR 15's
    Enclosure: 4.3 Cubes per chamber tuned o 32hz
    AudioControl - 145.9 dB
    TermLab Mic - 145.6, 146.0, 142.5(mic was messed up)
    Videos
    http://s108.photobucket.com/albums/n...Picture009.flv
    http://s108.photobucket.com/albums/n...Picture011.flv

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    shawnfleming's Avatar
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    Re: Which put outs more SPL?

    it depends on what the box is tuned at and what the resonant frequency of the vehicle is!



    Shawn Fleming
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    Living Loud Through Fidelity

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    Nikuk's Avatar
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    Re: Which put outs more SPL?

    generally 40-60 hz for spl. depends ALOT on the install and system itself. there are quite a few threads agout finding resonant freq's.... and what to do with them once you've found them



    What the f00k happened to this place?

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    bigbassman's Avatar
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    Re: Which put outs more SPL?

    generally.. low tunings are MUCH harder to work with..

    more **** blows up, more **** breaks, more **** flexes.. when working with sub 50hz tones..

    contrary to belief... most vehicles do not have a giant acoustical signature that you can go by to pick a frequency... the giant peak you'll find in testing.. is mostly due to enclosure and aiming

    most competitors focus their efforts into the 50-65 hz area for streetish installs, and 60-80 hz for extreme instances..

    Loyd L.



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    Re: Which put outs more SPL?

    The thing is, I dont havea ported box. It is sealed.



    Ride: 2001 Ford Ranger
    Color: Red
    Head Unit: Kenwood 52x4
    Speaker Amp: JL Audio e4300
    Front Speakers: Kicker 4x6
    Rear Speakers: Stock
    Sub Amp: Bostwick 1100 (1100 RMS @ 1ohm)
    Subs : (2) Kicker CVR 15's
    Enclosure: 4.3 Cubes per chamber tuned o 32hz
    AudioControl - 145.9 dB
    TermLab Mic - 145.6, 146.0, 142.5(mic was messed up)
    Videos
    http://s108.photobucket.com/albums/n...Picture009.flv
    http://s108.photobucket.com/albums/n...Picture011.flv

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    Bumpin' Yota's Avatar
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    Re: Which put outs more SPL?

    There are no frequencies that are 'louder' than others inherently. The are all recorded at 0dB usually. In your car however, there will definately be some frequencies that are heard to be louder than others by both the mic and your ears.

    Port your box, dont run sealed unless you want to be dissapointed...



    1 volt = [1(kg)(meter^2)] / [(second^3)(ampere)]

    1 watt = 1 joule / second
    1 watt = (1 Newton)(meter) / second
    1 watt = [1 kg/(second^2)] (meter) / second

    simplifying we find:

    1 watt = [1(kg)(meter)] / (second ^3)


    therefore:

    P = (I)(V)

    1 watt = (1 volt)(1ampere)
    1 watt = ( [1(kg)(meter^2)] / [(second^3)(ampere)] )(1 ampere)
    1 watt = [1(kg)(meter^2)] / (second^3)


    And that is WHY Power is in the SI units of Watts. enjoy!

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    Re: Which put outs more SPL?

    I ran sealed and i was pleased with my numbers
    133.7 - pass 1
    133.7 - pass 2
    135.4 - pass 3



    Ride: 2001 Ford Ranger
    Color: Red
    Head Unit: Kenwood 52x4
    Speaker Amp: JL Audio e4300
    Front Speakers: Kicker 4x6
    Rear Speakers: Stock
    Sub Amp: Bostwick 1100 (1100 RMS @ 1ohm)
    Subs : (2) Kicker CVR 15's
    Enclosure: 4.3 Cubes per chamber tuned o 32hz
    AudioControl - 145.9 dB
    TermLab Mic - 145.6, 146.0, 142.5(mic was messed up)
    Videos
    http://s108.photobucket.com/albums/n...Picture009.flv
    http://s108.photobucket.com/albums/n...Picture011.flv

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    Re: Which put outs more SPL?

    yes...



    Eclipse CD5000
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  10. #10
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    Re: Which put outs more SPL?

    higher frequencies will hit louder. for example 55 will hit better than 35.

    even though 35 sounds louder, your being judged on pressure 35hz will not create as much pressure as 55, no matter what your box is tuned at. most competitors run 50+ hz. even the big boy db drag kids.




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    supraman1379's Avatar
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    Re: Which put outs more SPL?

    Yea well I ended up going into a competition and making three passes. 1st pass was 133.7 sealed, 2nd was the same, and 3rd was 135.4 sealed. So I think I did pretty good for 2 12s and a 200 watt amp. I ran from about 43 Hz to about 53 Hz



    Ride: 2001 Ford Ranger
    Color: Red
    Head Unit: Kenwood 52x4
    Speaker Amp: JL Audio e4300
    Front Speakers: Kicker 4x6
    Rear Speakers: Stock
    Sub Amp: Bostwick 1100 (1100 RMS @ 1ohm)
    Subs : (2) Kicker CVR 15's
    Enclosure: 4.3 Cubes per chamber tuned o 32hz
    AudioControl - 145.9 dB
    TermLab Mic - 145.6, 146.0, 142.5(mic was messed up)
    Videos
    http://s108.photobucket.com/albums/n...Picture009.flv
    http://s108.photobucket.com/albums/n...Picture011.flv

  12. #12
    brandonloserkid's Avatar
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    Re: Which put outs more SPL?

    your from ocala? did you goto the deland show?




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    Re: Which put outs more SPL?

    Quote Originally Posted by brandonloserkid
    higher frequencies will hit louder. for example 55 will hit better than 35.

    even though 35 sounds louder, your being judged on pressure 35hz will not create as much pressure as 55, no matter what your box is tuned at. most competitors run 50+ hz. even the big boy db drag kids.
    Wrong!

    If 55hz is ALWAYS generating more pressure, why is it that my box does a legal 151.5 @ 43hz But barely manages a 150.1 at 55hz??

    Yes, this metering has been done on MY termlab PRESSURE sensor...

    And if you still dont believe me I will be at the NOPI jupiter 3x event late tomorrow where I can show you first hand.



    1 volt = [1(kg)(meter^2)] / [(second^3)(ampere)]

    1 watt = 1 joule / second
    1 watt = (1 Newton)(meter) / second
    1 watt = [1 kg/(second^2)] (meter) / second

    simplifying we find:

    1 watt = [1(kg)(meter)] / (second ^3)


    therefore:

    P = (I)(V)

    1 watt = (1 volt)(1ampere)
    1 watt = ( [1(kg)(meter^2)] / [(second^3)(ampere)] )(1 ampere)
    1 watt = [1(kg)(meter^2)] / (second^3)


    And that is WHY Power is in the SI units of Watts. enjoy!

  14. #14
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    Re: Which put outs more SPL?

    Quote Originally Posted by Bumpin' Yota
    Wrong!

    If 55hz is ALWAYS generating more pressure, why is it that my box does a legal 151.5 @ 43hz But barely manages a 150.1 at 55hz??
    Because you smell like a wet dog that rolled in squirrel diarrhea?

    Point is, you cannot predict what is going to be louder, without testing the environment...





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    Re: Which put outs more SPL?

    Quote Originally Posted by Bumpin' Yota
    Wrong!

    If 55hz is ALWAYS generating more pressure, why is it that my box does a legal 151.5 @ 43hz But barely manages a 150.1 at 55hz??

    Yes, this metering has been done on MY termlab PRESSURE sensor...
    your box probably isnt efficient at 55hz




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