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Reload Thread: 4 18s in a wall, 94 astro

  1. #121
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    Re: 4 18s in a wall, 94 astro

    Quote Originally Posted by PV Audio View Post
    That is because it's just measuring pure sound pressure in dB, which is why as I said, there are weightings to reflect how the human ear perceives loudness. Higher frequencies seem to be much louder to us than low frequencies. If someone played a 140dB tone at 25hz a few feet away from you, you really wouldn't be bothered by it. If they played the same one at 5000hz, you would be running out of the room.
    Ah, seems viable to me. Thanks for the info.



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    Quote Originally Posted by PV Audio View Post
    It will never be proved that loudness is somehow related to SPL because it isn't.

    Loudness, a subjective measure, is often confused with objective measures of sound pressure such as decibels or sound intensity.
    Quote Originally Posted by Pete Kulicki
    Building a stereo just to measure it's sound pressure level is like building a microwave oven for no reason other than to measure it's electromagnetic radiation emissions.




  2. #122
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    Re: 4 18s in a wall, 94 astro

    [QUOTE= so you yelling at 130db to your friend in a 125db car still registers as 130db to your friend's ears because that's the necessary loudness level for him to pick up what you're saying.[/QUOTE]

    i know this sounded good when you wrote it but you lost in the sauce. milk and butter dont make eggs



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  3. #123
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    Re: 4 18s in a wall, 94 astro

    Quote Originally Posted by PV Audio View Post
    You clearly don't know anything about physics because this is not true. If you wire your two subs out of phase with one another, you will be quieter than having just one.
    nobody is talking about wiring subs outta phase, THAT WOULD BE CANCELATION OF SOUND.
    ONE SUB + ONE SUB EQUALS MORE SPL
    2 SUBS + 4 MIDS AND 4 TWEETS = MORE SPL

    YOUR THEORY: it appears i actually have to put "FOR EXAMPLE"
    IF:
    1 SUB = 130DB
    then
    1 sub + 16 mids and 16 tweeters STILL = 130DB

    GOOD JOB DIQ HEAD



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  4. #124
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    Re: 4 18s in a wall, 94 astro

    Quote Originally Posted by PV Audio View Post
    You installing correctly is irrelevant when you get t-boned at an intersection and short out your 3000.1 and end up dying in a car fire.
    than drive safer than



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  5. #125
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    Re: 4 18s in a wall, 94 astro

    Quote Originally Posted by sub2weeker View Post
    nobody is talking about wiring subs outta phase, THAT WOULD BE CANCELATION OF SOUND.
    ONE SUB + ONE SUB EQUALS MORE SPL
    2 SUBS + 4 MIDS AND 4 TWEETS = MORE SPL

    YOUR THEORY: it appears i actually have to put "FOR EXAMPLE"
    IF:
    1 SUB = 130DB
    then
    1 sub + 16 mids and 16 tweeters STILL = 130DB

    GOOD JOB DIQ HEAD
    As others have said, you truly are clueless. I won't bother explaining anything since it's clear that it's either over your head or you just haven't bothered to read it. Just as a final note to you in case hearing it one more time will help you: due to the differences in frequency and phase, your mids and tweeters won't give you a higher score if they by themselves are not making 130db and your sub is. If your mids and tweets together are somehow making 135db with your sub making 130, then you'll score a 135. That is then the peak across the entire spectrum and the meter will pick that as the high score. I recommend that instead of using mindless insults that you bother to pick up a book on acoustics or basic fluids because you really don't understand what you're saying. I know what you're thinking: a subwoofer sweeps a large amount of air + 16mids sweeping a large amount of air = a LARGE amount of air. Unfortunately, it doesn't work like that because the "air" is soundwaves of different frequencies and as such, they don't add together except for at the furthest harmonics which are negligible anyway. In all seriousness, good luck with your project.




  6. #126
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    Re: 4 18s in a wall, 94 astro

    Quote Originally Posted by PV Audio View Post
    As others have said, you truly are clueless. I won't bother explaining anything since it's clear that it's either over your head or you just haven't bothered to read it. Just as a final note to you in case hearing it one more time will help you: due to the differences in frequency and phase, your mids and tweeters won't give you a higher score if they by themselves are not making 130db and your sub is. If your mids and tweets together are somehow making 135db with your sub making 130, then you'll score a 135. That is then the peak across the entire spectrum and the meter will pick that as the high score. I recommend that instead of using mindless insults that you bother to pick up a book on acoustics or basic fluids because you really don't understand what you're saying. I know what you're thinking: a subwoofer sweeps a large amount of air + 16mids sweeping a large amount of air = a LARGE amount of air. Unfortunately, it doesn't work like that because the "air" is soundwaves of different frequencies and as such, they don't add together except for at the furthest harmonics which are negligible anyway. In all seriousness, good luck with your project.
    your an idiot, in my equations. i was clowning your theory,

    because

    1 sub will = 130db

    while

    1 sub plus =16mids will equal 134+

    but the tl will "ONLY" pull out the peak frequency

    meaning sound is lost somewhere and the tl will not account for it



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  7. #127
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    Re: 4 18s in a wall, 94 astro

    This thread ***** big fat fupa




  8. #128
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    Re: 4 18s in a wall, 94 astro

    Quote Originally Posted by PV Audio View Post
    You installing correctly is irrelevant when you get t-boned at an intersection and short out your 3000.1 and end up dying in a car fire.
    oh really??? and i dont suppose the damage by the "T-BONING" is gonna leave a scratch. your car is totaled period



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  9. #129
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    Re: 4 18s in a wall, 94 astro

    Quote Originally Posted by annarbor84 View Post
    This thread ***** big fat fupa
    well i have to agree. my next post in here on my build thread will show my sd16k, and all my mids that im being told wont add to the overall spl of my vehicle



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  10. #130
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    Re: 4 18s in a wall, 94 astro

    Dude, are you STILL arguing this? I thought we went over this ad nauseum in that other thread.

    Every single spl meter in the history of spl meters will only measure the SINGLE LOUDEST FREQUENCY. NO ADDING. NO MATH. NO FORMULAS. END OF DISCUSSION. QUIT BEING SUCH A FAGGY DOUCHEROCKET.




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  11. #131
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    Re: 4 18s in a wall, 94 astro

    how about u make a vid with you getting on a meter with ur sub stage off and your front stage on. than another vid with just the sub stage on and front stage off on a meter
    and last with it normal both on.



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  12. #132
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    Re: 4 18s in a wall, 94 astro

    Quote Originally Posted by tommyk90 View Post
    Dude, are you STILL arguing this? I thought we went over this ad nauseum in that other thread.

    Every single spl meter in the history of spl meters will only measure the SINGLE LOUDEST FREQUENCY. END OF DISCUSSION. QUIT BEING SUCH A FAGGY DOUCHEROCKET.
    hahahaha
    im using that tomorrow.... alex is a douchrocket.



    2008 chevy tahoe
    HU premier 880prs
    2 autoteks mm4000.1 ( both need to be repaired )
    2 sundown saz1500d until other amps get fixed (150.00 sealed legal).
    1 autotek mm100.4
    1 set of comps per front door crunch gp 6.5
    oem in rear
    4 RD alphas v3 18s in a 3rd row wall built by mlstrass
    5 diehard marine batts. 3 in the rear 2 in the front
    dual alt kit by DC power. for now
    2 bottles of super glue for rear view mirror




  13. #133
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    Re: 4 18s in a wall, 94 astro

    Quote Originally Posted by tommyk90 View Post
    Dude, are you STILL arguing this? I thought we went over this ad nauseum in that other thread.

    Every single spl meter in the history of spl meters will only measure the SINGLE LOUDEST FREQUENCY. NO ADDING. NO MATH. NO FORMULAS. END OF DISCUSSION. QUIT BEING SUCH A FAGGY DOUCHEROCKET.
    I tried using the actual theory to explain, but maybe this blunt approach works better




  14. #134
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    Re: 4 18s in a wall, 94 astro

    Quote Originally Posted by sub2weeker View Post
    oh really??? and i dont suppose the damage by the "T-BONING" is gonna leave a scratch. your car is totaled period
    Oh my **** you are stupid. You can survive a t-bone collision without much injury. When you catch on fire, then you might think otherwise. Your car isn't what's important, its you potentially being trapped in a car fire when there didn't have to be one if you had just used a little piece of metal.




  15. #135
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    Re: 4 18s in a wall, 94 astro

    Quote Originally Posted by MakeshiftAudio View Post
    Actually, I disagree on some points.

    Here's an easy example. Think of the Beats phenomenon. You have 2 waves that are similar in frequency(f) and are equal in amplitude(A). At points they will cancel out completely, and at other points they will have a cumulative amplitude of 2A, with a peak to peak beat frequency of |f1-f2|. This can be applied to any two frequencies, and many more actually, but it isn't as easy. This operation is the basic principal of AM transmission.

    Regardless of the frequency, it will shift in and out of phase with another signal.

    Wave and signal can be used synonymously as long as both of them are sinusoidal.
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