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Subwoofers
why is efficiency so critical
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<blockquote data-quote="Remotia" data-source="post: 2123810" data-attributes="member: 568127"><p>For the record, sensitivity is VERY VERY VERY important for subwoofers, that is one of the most critical aspects and measurements we look at when we design drivers. If a driver is 1 less dB than another driver, then its 1 less dB unless you put more power into it to match it, no matter WHAT output. There is much more to be said, but for simplicity, you can rest assure that SPL @ 1 watt will tell you just how loud a subwoofer is going to be relative to another subwoofer with similar voice coil dimensions and suspension system (compliance)</p><p></p><p>Now, T/S does not tell all, we actually use a Klippel analyzer when we test our subwoofers. You can exact insight into each driver and can look at inductance curves, Bl curve and cms curves along with THD at very high power levels as well as power compression.. etc etc... all beyond the scope of my point.. Sensitivity is critical!</p><p></p><p>Why do you think digital designs gets such good numbers for SPL? Look at their sensitivity, they are off the charts! Why do you thnk the MTX Jackhammer is a dog? It pulls 84dB with one watt and cant make up for it without power compression relative to some of the high sensitivity 18" drivers that our louder than it outright.</p><p></p><p>And if you what you are looking at, T/S can be very VERY insightful.</p></blockquote><p></p>
[QUOTE="Remotia, post: 2123810, member: 568127"] For the record, sensitivity is VERY VERY VERY important for subwoofers, that is one of the most critical aspects and measurements we look at when we design drivers. If a driver is 1 less dB than another driver, then its 1 less dB unless you put more power into it to match it, no matter WHAT output. There is much more to be said, but for simplicity, you can rest assure that SPL @ 1 watt will tell you just how loud a subwoofer is going to be relative to another subwoofer with similar voice coil dimensions and suspension system (compliance) Now, T/S does not tell all, we actually use a Klippel analyzer when we test our subwoofers. You can exact insight into each driver and can look at inductance curves, Bl curve and cms curves along with THD at very high power levels as well as power compression.. etc etc... all beyond the scope of my point.. Sensitivity is critical! Why do you think digital designs gets such good numbers for SPL? Look at their sensitivity, they are off the charts! Why do you thnk the MTX Jackhammer is a dog? It pulls 84dB with one watt and cant make up for it without power compression relative to some of the high sensitivity 18" drivers that our louder than it outright. And if you what you are looking at, T/S can be very VERY insightful. [/QUOTE]
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