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Reload Thread: What am I looking for in the waterfall graph of REW?

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    awdtalon21's Avatar
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    What am I looking for in the waterfall graph of REW?

    Is there anything I should be looking for to show signs of something being off? The waterfall of my 6.5 door looks very different than my 3in mid in the pillar.





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    Re: What am I looking for in the waterfall graph of REW?

    Waterfall plot expresses the decay of energy across time (ms) and frequency . The quicker the decay, cleaner the driver. Any peaks that do not die off as quickly are usually a resonance of some sort, stored energy in the cone or a cavity resonance. Things like that.



    Quote Originally Posted by audioholic View Post
    Saying "clipping doesn't kill speakers" is a half-truth at best. Technically no, clipping itself does not hurt the speaker. But in clipping your amp, you can easily create a situation that WILL kill the speaker. Was the squared waveform the DIRECT cause of the failure? No. In the end, the answer is, always has been, and can only be... heat kills speakers. BUT, clipping increases heat generation, sometimes by a drastic amount. So to start a thread simply to state that clipping does not hurt speakers is, again, a half-truth at best.

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    Re: What am I looking for in the waterfall graph of REW?

    How bad does my door 6.5 look?



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    Re: What am I looking for in the waterfall graph of REW?



    This is what the plots normally look like. You can see that this particular driver has some energy storage around 600-700Hz.

    Your noise floor looks high in the plot so, kinda hard to tell.



    Quote Originally Posted by audioholic View Post
    Saying "clipping doesn't kill speakers" is a half-truth at best. Technically no, clipping itself does not hurt the speaker. But in clipping your amp, you can easily create a situation that WILL kill the speaker. Was the squared waveform the DIRECT cause of the failure? No. In the end, the answer is, always has been, and can only be... heat kills speakers. BUT, clipping increases heat generation, sometimes by a drastic amount. So to start a thread simply to state that clipping does not hurt speakers is, again, a half-truth at best.

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