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Sundown Audio SA12 bottoming out
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<blockquote data-quote="Jeffdachef" data-source="post: 8539895" data-attributes="member: 650438"><p>The amount of power you need to actually make the woofer slap the magnet is a lot. You dont have anywhere near enough power to actually bottom out an SA 12. Not even close. Those metal banging sounds you hear can easily be caused from a horrible distorted signal, a bad ground, etc.. If you were running a 2k amp then yeah that would be suspect to bottoming out. Or a 1.5k amp but you play something that actually plays low. Like 10-27hz low. OR have a 3 cubic feet sealed box for a single 12.... The song you listed is only down to 35hz. At that point the sub would be barely moving due to the frequency alone. IT takes a fk ton for a sub to reach mechanical Xmax aka bottoming out. Here's an example skip to 2:00 at 2:20 would be when the sub is actually bottoming out SLIGHTLY and thats how it really looks and sounds like. It took that much power on FREE air to reach that point. You are in a sealed box which prevents a lot of bottoming out due to the design of the box being an air spring cushion. so its VERY unlikely that you are bottoming out at all.</p><p></p><p>[MEDIA=youtube]UrfVulKxkHs[/MEDIA]</p><p></p><p>means everything worked fine and was setup right, only thing that changed is the new head unit then all these issues appeared. Either you moved a ground loose somehow or the chinese head unit's pre-outs is causing you all sorts of distortion with the sh*t signal.</p></blockquote><p></p>
[QUOTE="Jeffdachef, post: 8539895, member: 650438"] The amount of power you need to actually make the woofer slap the magnet is a lot. You dont have anywhere near enough power to actually bottom out an SA 12. Not even close. Those metal banging sounds you hear can easily be caused from a horrible distorted signal, a bad ground, etc.. If you were running a 2k amp then yeah that would be suspect to bottoming out. Or a 1.5k amp but you play something that actually plays low. Like 10-27hz low. OR have a 3 cubic feet sealed box for a single 12.... The song you listed is only down to 35hz. At that point the sub would be barely moving due to the frequency alone. IT takes a fk ton for a sub to reach mechanical Xmax aka bottoming out. Here's an example skip to 2:00 at 2:20 would be when the sub is actually bottoming out SLIGHTLY and thats how it really looks and sounds like. It took that much power on FREE air to reach that point. You are in a sealed box which prevents a lot of bottoming out due to the design of the box being an air spring cushion. so its VERY unlikely that you are bottoming out at all. [MEDIA=youtube]UrfVulKxkHs[/MEDIA] means everything worked fine and was setup right, only thing that changed is the new head unit then all these issues appeared. Either you moved a ground loose somehow or the chinese head unit's pre-outs is causing you all sorts of distortion with the sh*t signal. [/QUOTE]
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