Sundown 2012 Cones... At The Shop!

sundownz
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One of each showed up for us to check out -- will be building a 12" up first since that is the largest one I have a full size spider for. So that means I can take a video of it tomorrow !

On to the photos... they turned out way crazier than I imagined.

18" Cone

CIMG6637.JPG


CIMG6638.JPG


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15" Cone

CIMG6639.JPG


CIMG6640.JPG


CIMG6641.JPG


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12" Cone

CIMG6642.JPG


CIMG6643.JPG


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10" Cone

CIMG6644.JPG


CIMG6645.JPG


CIMG6646.JPG


 
I saw some folks expressing concerns over the "SD" of the cones... here are a few photos :

CIMG6668.JPG


* 10" Z v.3 Cone // 10" Z v.4 Cone

CIMG6669.JPG


* 12" Z v.3 Cone // 12" Z v.4 Cone

CIMG6670.JPG


* 12" Z v.3 Cone Diameter with 1/2 Surround

CIMG6671.JPG


* 12" Z v.4 Cone Diameter with 1/2 Surround

* Total SD difference is only 10%

CIMG6672.JPG


* 10" Z v.3 Cone Diameter with 1/2 Surround

CIMG6673.JPG


* 10" Z v.4 Cone Diameter with 1/2 Surround

* The 10" frame is slightly over-sized... so it's actually slightly more SD

 
Yeah, but what really matters is volume displaced, not necessarily cone area, which I'm sure is much higher with the extra Xmax. Do you have those figures yet?

 
Why so odd looking?
http://www.caraudio.com/forums/sundown-audio/539809-sundown-new-2012-frames-parts-thread.html

Each surround has the following calculated geometric capacity :

10 -- 50mm one-way (frame allows 45)

12 -- 55mm one-way (frame allows 50)

15 -- 60mm one-way (frame allows 55)

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In order to allow for such high throw they must be very large.

Bottom line -- almost no surround produced anywhere else allows this level of throw so these do look "odd" compared to what is generally available.

 
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