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Subwoofers
overexcursion symptoms
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<blockquote data-quote="helotaxi" data-source="post: 4591929" data-attributes="member: 550915"><p>A sealed box is far from making a sub immune to bottoming. Depending on the box, a ported box may actually provide more cone control than a sealed one (except below tuning).</p><p></p><p>As far as the phase thing, just because the wires match (+ to + and - to -) doesn't mean that the setup is in phase with the front stage. Swapping the phase to check it both ways is one of the standard parts of tuning the system to get the best sound. It might sound better wired to all matching, or it might sound better with the sub phase reversed. Phase is a relative thing. The speakers each have a phase response and a natural phase delay based on the inductance of the driver. Combine that with the difference in distance between the subs and the front speakers to your ears and the phase is changed yet again.</p></blockquote><p></p>
[QUOTE="helotaxi, post: 4591929, member: 550915"] A sealed box is far from making a sub immune to bottoming. Depending on the box, a ported box may actually provide more cone control than a sealed one (except below tuning). As far as the phase thing, just because the wires match (+ to + and - to -) doesn't mean that the setup is in phase with the front stage. Swapping the phase to check it both ways is one of the standard parts of tuning the system to get the best sound. It might sound better wired to all matching, or it might sound better with the sub phase reversed. Phase is a relative thing. The speakers each have a phase response and a natural phase delay based on the inductance of the driver. Combine that with the difference in distance between the subs and the front speakers to your ears and the phase is changed yet again. [/QUOTE]
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