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Problem when calculating Sealed Box design..
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<blockquote data-quote="microhaxo" data-source="post: 7381561" data-attributes="member: 570733"><p>So I bought a new car and I no longer have room for ported, which is fine. I decided to calculate out the best sealed box for my sub and so i went here:</p><p></p><p><a href="http://www.carstereo.com/help/Articles.cfm?id=26" target="_blank">Car Audio - Sealed Subwoofer Box Design Calculator</a></p><p></p><p>and used these specs:</p><p></p><p>AV12X-D2</p><p></p><p>FS: 26.7Hz</p><p></p><p>Qms: 3.67</p><p></p><p>Vas: 69L</p><p></p><p>Cms: .22mm/N</p><p></p><p>Mms: 161g</p><p></p><p>Rms: 7.32</p><p></p><p>Xmax: 23mm</p><p></p><p>Xmech: 32mm</p><p></p><p>Sd: 471sqcm</p><p></p><p>Vd p-p: 2.16L</p><p></p><p>Qes: .36</p><p></p><p>Re: 3.2ohm</p><p></p><p>Le: .196mH</p><p></p><p>Z: 4ohm</p><p></p><p>Bl: 15.6Tm</p><p></p><p>Pe: 1000W</p><p></p><p>Qts: .32</p><p></p><p>1WSPL: 87.7db</p><p></p><p>2.83V: 91.7dB</p><p></p><p>I also used</p><p></p><p>AJ Sealed Designer to make sure the response was right.</p><p></p><p>Now here is the problem.. If i use a normal Qtc of ~ 0.8 - 1.2 my box IS HUGE, anything above 1.2 Qtc and now im peaking at like 1khz.. wtf</p><p></p><p>The flattest response requires a 67cu ft box! even at 1.2 Qtc i need 5.282 CUFT SEALED!!!</p><p></p><p>I was looking to make ~ 1.5 cuft sealed for the sub but now it seems that that design is WAY too small for this sub.</p><p></p><p>Someone please help me.</p><p></p><p>Thanks.</p><p></p><p>EDIT:</p><p></p><p>Here is the same result with WINISD:</p><p></p><p><a href="http://imageshack.us/photo/my-images/221/unledygk.png/" target="_blank"><img src="http://img221.imageshack.us/img221/3852/unledygk.png" alt="" class="fr-fic fr-dii fr-draggable " style="" /></a></p><p></p><p>Uploaded with <a href="http://imageshack.us" target="_blank">ImageShack.us</a></p></blockquote><p></p>
[QUOTE="microhaxo, post: 7381561, member: 570733"] So I bought a new car and I no longer have room for ported, which is fine. I decided to calculate out the best sealed box for my sub and so i went here: [URL="http://www.carstereo.com/help/Articles.cfm?id=26"]Car Audio - Sealed Subwoofer Box Design Calculator[/URL] and used these specs: AV12X-D2 FS: 26.7Hz Qms: 3.67 Vas: 69L Cms: .22mm/N Mms: 161g Rms: 7.32 Xmax: 23mm Xmech: 32mm Sd: 471sqcm Vd p-p: 2.16L Qes: .36 Re: 3.2ohm Le: .196mH Z: 4ohm Bl: 15.6Tm Pe: 1000W Qts: .32 1WSPL: 87.7db 2.83V: 91.7dB I also used AJ Sealed Designer to make sure the response was right. Now here is the problem.. If i use a normal Qtc of ~ 0.8 - 1.2 my box IS HUGE, anything above 1.2 Qtc and now im peaking at like 1khz.. wtf The flattest response requires a 67cu ft box! even at 1.2 Qtc i need 5.282 CUFT SEALED!!! I was looking to make ~ 1.5 cuft sealed for the sub but now it seems that that design is WAY too small for this sub. Someone please help me. Thanks. EDIT: Here is the same result with WINISD: [URL="http://imageshack.us/photo/my-images/221/unledygk.png/"][IMG]http://img221.imageshack.us/img221/3852/unledygk.png[/IMG][/URL] Uploaded with [URL="http://imageshack.us"]ImageShack.us[/URL] [/QUOTE]
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Problem when calculating Sealed Box design..
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