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<blockquote data-quote="sundownz" data-source="post: 7764066" data-attributes="member: 549523"><p>Just got these in... designed them based on many requests for a really good sealed box 8" woofer. Power rating is pending testing but mechanically I designed them around 300 watts or so (half the spiders of the SA-8 v.2) -- we'll do our thermal cycle to determine the official rating. As is typical with our products the rating giving will be a "worst case" rating and many people will have no problem running a bit extra.</p><p></p><p>We built upon our newly tooled platform from the SA-8 v.2 so it shares many of the advantages of that platform from the get-go.</p><p></p><p>These feature an under-hung coil with predicted linear x-max of ~14.5mm one-way by 70% BL method using an 8-layer copper 2" coil with 1/2" of winding width.</p><p></p><p>The total depth for mounting is right at 4.75" measured,</p><p></p><p>I will be measuring actual T/S on them later on today after some break-in time. Pricing is also pending final costs from our parts suppliers.</p><p></p><p>On to the photos :</p><p></p><p><img src="http://www.sundownaudio.com/misc/protos/SD-2_8inch/CIMG6284.JPG" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>* E8 v.2 then SD-2 8" then SA-8 v.2</p><p></p><p><img src="http://www.sundownaudio.com/misc/protos/SD-2_8inch/CIMG6285.JPG" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p><img src="http://www.sundownaudio.com/misc/protos/SD-2_8inch/CIMG6286.JPG" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p><img src="http://www.sundownaudio.com/misc/protos/SD-2_8inch/CIMG6287.JPG" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>* For this design I used drilling in the basket as opposed to the vent ring to save depth.</p><p></p><p><img src="http://www.sundownaudio.com/misc/protos/SD-2_8inch/CIMG6288.JPG" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>* Solid pole like the other SD-2 woofers so there is no need to leave room to breathe behind them.</p><p></p><p><img src="http://www.sundownaudio.com/misc/protos/SD-2_8inch/CIMG6289.JPG" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>* Same spider as the SA-8 v.2 but only one layer (top layer)</p><p></p><p><img src="http://www.sundownaudio.com/misc/protos/SD-2_8inch/CIMG6290.JPG" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p></blockquote><p></p>
[QUOTE="sundownz, post: 7764066, member: 549523"] Just got these in... designed them based on many requests for a really good sealed box 8" woofer. Power rating is pending testing but mechanically I designed them around 300 watts or so (half the spiders of the SA-8 v.2) -- we'll do our thermal cycle to determine the official rating. As is typical with our products the rating giving will be a "worst case" rating and many people will have no problem running a bit extra. We built upon our newly tooled platform from the SA-8 v.2 so it shares many of the advantages of that platform from the get-go. These feature an under-hung coil with predicted linear x-max of ~14.5mm one-way by 70% BL method using an 8-layer copper 2" coil with 1/2" of winding width. The total depth for mounting is right at 4.75" measured, I will be measuring actual T/S on them later on today after some break-in time. Pricing is also pending final costs from our parts suppliers. On to the photos : [IMG]http://www.sundownaudio.com/misc/protos/SD-2_8inch/CIMG6284.JPG[/IMG] * E8 v.2 then SD-2 8" then SA-8 v.2 [IMG]http://www.sundownaudio.com/misc/protos/SD-2_8inch/CIMG6285.JPG[/IMG] [IMG]http://www.sundownaudio.com/misc/protos/SD-2_8inch/CIMG6286.JPG[/IMG] [IMG]http://www.sundownaudio.com/misc/protos/SD-2_8inch/CIMG6287.JPG[/IMG] * For this design I used drilling in the basket as opposed to the vent ring to save depth. [IMG]http://www.sundownaudio.com/misc/protos/SD-2_8inch/CIMG6288.JPG[/IMG] * Solid pole like the other SD-2 woofers so there is no need to leave room to breathe behind them. [IMG]http://www.sundownaudio.com/misc/protos/SD-2_8inch/CIMG6289.JPG[/IMG] * Same spider as the SA-8 v.2 but only one layer (top layer) [IMG]http://www.sundownaudio.com/misc/protos/SD-2_8inch/CIMG6290.JPG[/IMG] [/QUOTE]
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