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Revisiting the X-8 : New Thread
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<blockquote data-quote="sundownz" data-source="post: 7953925" data-attributes="member: 549523"><p>Our prior unit had extensive supplier issues to the point where we've just had to write off all of that work and tooling.</p><p></p><p>In any event... I decided to re-visit the X-8 idea and base it on our SA-8 v.2 frame tooling.</p><p></p><p>The first challenge was to make a GREAT spider for a 2.5" coil on an 8" woofer... which is difficult and we used extensive software optimization before tooling. Fortunately our basket allows a spider about 10mm wider than pretty much all other 8" frames out there.</p><p></p><p>Since the spider is the main challenger we had that tooled first and then built up a test bed to test with :</p><p></p><p><img src="http://www.sundownaudio.com/misc/protos/X8/2012_Version/CIMG6783.JPG" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>* Former was too tall / big in diameter for the SA-8 dust cap to work so I had to use an SA-12 dust cap; which came all the way out to glue onto the surround edge.</p><p></p><p><img src="http://www.sundownaudio.com/misc/protos/X8/2012_Version/CIMG6784.JPG" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>* SA-12 Motor</p><p></p><p><img src="http://www.sundownaudio.com/misc/protos/X8/2012_Version/CIMG6785.JPG" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>* We had an adapter machined to mount the motor; I decided to have some extras made for some brave DIY folks that may want to make a similar project.</p><p></p><p><img src="http://www.sundownaudio.com/misc/protos/X8/2012_Version/CIMG6786.JPG" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>* There is the beastly new spider tooling -- this thing worked great !</p><p></p><p>[MEDIA=youtube]9qcDrN5avP4[/MEDIA]</p><p></p><p>I was able to test the X-8 spider with an SA-12 motor / coil and SA-8 v.2 cone and surround. The X-8 will have it's own unique motor, cone, and surround for production. Those parts aren't done yet and I wanted to test the spider so we built it like this for now <img src="http://www.soundsolutionsaudio.com/forum//public/style_emoticons/default/smile.png" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>I am very pleased with the spiders excursion capacity and linearity. I will get some Klippel measurements done on it soon as well to verify... my "push the cone Klippel" indicates that the spider has a very linear compliance to it for quite a bit of travel in both directions -- anxious to see the actual plots <img src="http://www.soundsolutionsaudio.com/forum//public/style_emoticons/default/smile.png" alt="" class="fr-fic fr-dii fr-draggable " style="" /> All of the computer optimization on this spider definitely paid off with the result.</p></blockquote><p></p>
[QUOTE="sundownz, post: 7953925, member: 549523"] Our prior unit had extensive supplier issues to the point where we've just had to write off all of that work and tooling. In any event... I decided to re-visit the X-8 idea and base it on our SA-8 v.2 frame tooling. The first challenge was to make a GREAT spider for a 2.5" coil on an 8" woofer... which is difficult and we used extensive software optimization before tooling. Fortunately our basket allows a spider about 10mm wider than pretty much all other 8" frames out there. Since the spider is the main challenger we had that tooled first and then built up a test bed to test with : [IMG]http://www.sundownaudio.com/misc/protos/X8/2012_Version/CIMG6783.JPG[/IMG] * Former was too tall / big in diameter for the SA-8 dust cap to work so I had to use an SA-12 dust cap; which came all the way out to glue onto the surround edge. [IMG]http://www.sundownaudio.com/misc/protos/X8/2012_Version/CIMG6784.JPG[/IMG] * SA-12 Motor [IMG]http://www.sundownaudio.com/misc/protos/X8/2012_Version/CIMG6785.JPG[/IMG] * We had an adapter machined to mount the motor; I decided to have some extras made for some brave DIY folks that may want to make a similar project. [IMG]http://www.sundownaudio.com/misc/protos/X8/2012_Version/CIMG6786.JPG[/IMG] * There is the beastly new spider tooling -- this thing worked great ! [MEDIA=youtube]9qcDrN5avP4[/MEDIA] I was able to test the X-8 spider with an SA-12 motor / coil and SA-8 v.2 cone and surround. The X-8 will have it's own unique motor, cone, and surround for production. Those parts aren't done yet and I wanted to test the spider so we built it like this for now [IMG]http://www.soundsolutionsaudio.com/forum//public/style_emoticons/default/smile.png[/IMG] I am very pleased with the spiders excursion capacity and linearity. I will get some Klippel measurements done on it soon as well to verify... my "push the cone Klippel" indicates that the spider has a very linear compliance to it for quite a bit of travel in both directions -- anxious to see the actual plots [IMG]http://www.soundsolutionsaudio.com/forum//public/style_emoticons/default/smile.png[/IMG] All of the computer optimization on this spider definitely paid off with the result. [/QUOTE]
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