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  1. #31
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    Re: Why you need an oscilloscope

    Me too. Seems like a handy tool.



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  2. #32
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    Re: Why you need an oscilloscope

    im getting one. Someone post a link to so 0db test tones please. I cant find any.w



    "When I listen to a stereo loudspeaker playback in my room and an auditory scene has formed in my mind, how would I know that what I hear is an accurate replica of an auditory scene that could be had at the recording venue? Or more generally, that this is an auditory scene that could have existed at all?"


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    Re: Why you need an oscilloscope

    Quote Originally Posted by calebkhill View Post
    im getting one. Someone post a link to so 0db test tones please. I cant find any.w
    Make your own here:
    Online Sine Tone Waveform Generator

    These are good go-to 0dB tones:
    Realm of Excursion

    Also,
    Test Tone Collection



    Quote Originally Posted by ducatipaso View Post
    15inch subs can't play fast beats, they take more power and that taxes the vehicles electrical system. You will wake up and "hear" then see the light at the end of the tunnel and it will be 3 10's pounding so hard you wont even open your trunk or turn your system on because you 15's will sound sloppy & weak.
    Quote Originally Posted by benbenondatrack View Post
    stfu lesbo.why are you worried about me so much? you must want to date me ya little cookie monster but i dont even like sweets. your just a cup full of ice, dirt dead nasty azz ice...without the water.

    Dat Build Log: http://mobileaudioforum.com/forum/showthread.php?2566-1999-Chevrolet-Blazer&highlight=1999+blazer

  4. #34
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    Re: Why you need an oscilloscope

    awesome



    "When I listen to a stereo loudspeaker playback in my room and an auditory scene has formed in my mind, how would I know that what I hear is an accurate replica of an auditory scene that could be had at the recording venue? Or more generally, that this is an auditory scene that could have existed at all?"


  5. #35
    calebkhill's Avatar
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    Re: Why you need an oscilloscope

    What should i set the sample rate to on the generator



    "When I listen to a stereo loudspeaker playback in my room and an auditory scene has formed in my mind, how would I know that what I hear is an accurate replica of an auditory scene that could be had at the recording venue? Or more generally, that this is an auditory scene that could have existed at all?"


  6. #36
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    Re: Why you need an oscilloscope





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    Re: Why you need an oscilloscope

    double post... forum is laggy
    Last edited by marc2112; 01-19-2013 at 09:09 AM. Reason: double post




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    Re: Why you need an oscilloscope

    Quote Originally Posted by calebkhill View Post
    What should i set the sample rate to on the generator
    The default (44.1kHz) is fine, or go 48kHz. Shouldn't matter too much, it's only a test tone. But for music, the highest you can get is what you want.



    Quote Originally Posted by ducatipaso View Post
    15inch subs can't play fast beats, they take more power and that taxes the vehicles electrical system. You will wake up and "hear" then see the light at the end of the tunnel and it will be 3 10's pounding so hard you wont even open your trunk or turn your system on because you 15's will sound sloppy & weak.
    Quote Originally Posted by benbenondatrack View Post
    stfu lesbo.why are you worried about me so much? you must want to date me ya little cookie monster but i dont even like sweets. your just a cup full of ice, dirt dead nasty azz ice...without the water.

    Dat Build Log: http://mobileaudioforum.com/forum/showthread.php?2566-1999-Chevrolet-Blazer&highlight=1999+blazer

  9. #39
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    Re: Why you need an oscilloscope

    How does this prove you need an O Scope over using the DMM method? You only provided data for 1 solution.



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    Re: Why you need an oscilloscope

    Quote Originally Posted by whitedragon551 View Post
    How does this prove you need an O Scope over using the DMM method? You only provided data for 1 solution.
    This thread may not show an oscope vs. a DMM, but we all know a DMM is only a guess. You just looking to improve the thread? I could see what you mean, showing an assumed 2k out of an amp vs. what it actually does via oscope, for example. That's what I plan on doing once I finally get my new build up.



    Quote Originally Posted by ducatipaso View Post
    15inch subs can't play fast beats, they take more power and that taxes the vehicles electrical system. You will wake up and "hear" then see the light at the end of the tunnel and it will be 3 10's pounding so hard you wont even open your trunk or turn your system on because you 15's will sound sloppy & weak.
    Quote Originally Posted by benbenondatrack View Post
    stfu lesbo.why are you worried about me so much? you must want to date me ya little cookie monster but i dont even like sweets. your just a cup full of ice, dirt dead nasty azz ice...without the water.

    Dat Build Log: http://mobileaudioforum.com/forum/showthread.php?2566-1999-Chevrolet-Blazer&highlight=1999+blazer

  11. #41
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    Re: Why you need an oscilloscope

    Quote Originally Posted by gckless View Post
    This thread may not show an oscope vs. a DMM, but we all know a DMM is only a guess. You just looking to improve the thread? I could see what you mean, showing an assumed 2k out of an amp vs. what it actually does via oscope, for example. That's what I plan on doing once I finally get my new build up.
    Just curious. This thread doesnt prove anything other than an O Scope does work. It doesnt show alternative methods do or do not work. You cant compare 1 thing against another and say that option A is better without providing data for both options.

    The DMM method is more than a guess. Its an educated guess with mathematical equations involved.

    Id like to see data from the OP using the DMM method on the same setup or from TFade.



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  12. #42
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    Re: Why you need an oscilloscope

    Dbl post



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    Re: Why you need an oscilloscope

    The DMM method is OK, as long as you're aware it makes you rely on your ears to know if the signal is clipped. Both the DMM method and the oscilloscope method depend on what you use for test tones. The argument has been made a hundred times against using 0 dB tones for subs and mids. It results in disappointment because your music will sound too quiet, which is why every time this discussion comes up someone has to suggest -10 to -5 dB attenuated tones instead of 0 dB tones. Of course if all you listen to is compressed music with no dynamic range that needs to be considered as well. Use your head.

    Neither method is safe to use for setting gains on tweeters in an active setup.




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  14. #44
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    Re: Why you need an oscilloscope

    Quote Originally Posted by whitedragon551 View Post
    Just curious. This thread doesnt prove anything other than an O Scope does work. It doesnt show alternative methods do or do not work. You cant compare 1 thing against another and say that option A is better without providing data for both options.

    The DMM method is more than a guess. Its an educated guess with mathematical equations involved.

    Id like to see data from the OP using the DMM method on the same setup or from TFade.
    The point of my post wasn't to compare a 'scope against a DMM. I wanted to show the kind of information that you just can't get from anything else. Look at the 2nd waveform in my first post - a DMM won't tell you something's wrong with that signal.

    I don't have DMM data because I don't use one. The 'scope gives me voltage and much more. If I had tried to set my sub amp gain with a DMM the output would have been badly clipped. My amp doesn't make rated power at less than 14.4V and my car doesn't get up that high.



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  15. #45
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    Re: Why you need an oscilloscope

    Quote Originally Posted by maylar View Post
    The point of my post wasn't to compare a 'scope against a DMM. I wanted to show the kind of information that you just can't get from anything else. Look at the 2nd waveform in my first post - a DMM won't tell you something's wrong with that signal.

    I don't have DMM data because I don't use one. The 'scope gives me voltage and much more. If I had tried to set my sub amp gain with a DMM the output would have been badly clipped. My amp doesn't make rated power at less than 14.4V and my car doesn't get up that high.
    Thats my point. You dont know it would be badly clipped. You have no evidence to support it and havent even tried that method.



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