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Low Earth Orbit
DIY Audio
No compromises front loaded double 18” cab
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<blockquote data-quote="Peter Morris" data-source="post: 131919" data-attributes="member: 652"><p>Re: No compromises front loaded double 18” cab</p><p></p><p></p><p></p><p><span style="font-size: 12px"><span style="color: #000000"><span style="font-family: 'Calibri'">Hi Phil,</span></span></span></p><p><span style="font-size: 12px"><span style="color: #000000"><span style="font-family: 'Calibri'"></span></span></span></p><p><span style="font-size: 12px"><span style="color: #000000"><span style="font-family: 'Calibri'">You have hit the nail on the head regarding Klippel etc. One of the biggest problems designing woofers with excursions in excess of 10mm is keeping them stable so there is no bias and they continue to return to centre so you can make use of the quoted Xmax. Drivers with higher Fs tend to be better (assuming the same Bl(x) curve).</span></span></span></p><p><span style="font-size: 12px"><span style="color: #000000"><span style="font-family: 'Calibri'"></span></span></span></p><p><span style="font-family: 'Calibri'"><span style="font-size: 12px"><span style="color: #000000">I was discussing this with a friend last week who has measured many of these drivers … and they all struggle. As you said this is one of the things that the 18SW115 is very good at, I suspect slightly better than the18sound. </span></span></span></p><p><span style="font-family: 'Calibri'"><span style="font-size: 12px"><span style="color: #000000"></span></span></span></p><p><span style="font-family: 'Calibri'"><span style="font-size: 12px"><span style="color: #000000">I generally can’t get B&C drivers in Oz at a reasonable price and used the 18sound, it is however very good driver. I do have some 21SW152 .... <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" />~<img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" />~:smile: This new driver from 18sound does however look very good in this respect <a href="http://www.eighteensound.it/PRODUCTS/Products/CatID/2/ProdID=109" target="_blank">http://www.eighteensound.it/PRODUCTS/Products/CatID/2/ProdID=109</a></span></span></span></p><p><span style="font-family: 'Calibri'"><span style="font-size: 12px"><span style="color: #000000"></span></span></span></p><p><span style="font-size: 12px"><span style="color: #000000"><span style="font-family: 'Calibri'">The other thing to note is that both of these have very largeVCs and minimal thermal compression compared to some of the other drivers.</span></span></span></p></blockquote><p></p>
[QUOTE="Peter Morris, post: 131919, member: 652"] Re: No compromises front loaded double 18” cab [SIZE=3][COLOR=#000000][FONT=Calibri]Hi Phil, [/FONT][/COLOR][/SIZE] [SIZE=3][COLOR=#000000][FONT=Calibri]You have hit the nail on the head regarding Klippel etc. One of the biggest problems designing woofers with excursions in excess of 10mm is keeping them stable so there is no bias and they continue to return to centre so you can make use of the quoted Xmax. Drivers with higher Fs tend to be better (assuming the same Bl(x) curve). [/FONT][/COLOR][/SIZE] [FONT=Calibri][SIZE=3][COLOR=#000000]I was discussing this with a friend last week who has measured many of these drivers … and they all struggle. As you said this is one of the things that the 18SW115 is very good at, I suspect slightly better than the18sound. I generally can’t get B&C drivers in Oz at a reasonable price and used the 18sound, it is however very good driver. I do have some 21SW152 .... :)~:-)~:smile: This new driver from 18sound does however look very good in this respect [URL]http://www.eighteensound.it/PRODUCTS/Products/CatID/2/ProdID=109[/URL] [/COLOR][/SIZE][/FONT] [SIZE=3][COLOR=#000000][FONT=Calibri]The other thing to note is that both of these have very largeVCs and minimal thermal compression compared to some of the other drivers.[/FONT][/COLOR][/SIZE] [/QUOTE]
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No compromises front loaded double 18” cab
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