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And there was a stack of plywood and Bubinga; Soon to become a 25 cubic foot custom enclosure for a Resonate Engineering 18" XXX Overall dimentions of 66"tall 41.5"wide 22" deep with a downfireing 10" port system designed by the customer, to tune to ~11hz. More pictures will follow.
 

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:yay:
It's finally happening!

Nathan if you pull off this craziness with the quality of your other work I've seen... You will truly be the man!

That solid Bubinga looks nice too...
 

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Nay say I...twill not be a tube at all. That cavernous cardboard tunnel pictured is for the exhaust from the 80lb air pumping device. This to be housed in the laminated flesh of dead birch and bubinga trees. :dumbcrazy:
 

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Nathan . . . . you've got me conflicted. On the one hand I'm a "tree hugger" on the other hand I'm a neo-subist. After I saw all that debris from all those holes you drilled through my beloved Bu . . . Binga I have decided I can't watch anymore. I'll wait to hear how it sounds.
 

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Wow! Looks like you are really kicking butt on this thing. Those last 2 pics had me cheesing while I stared at them. The internal bracing looks great. Judging by that lathe picture maybe you should contact Mike Rowe from Dirty Jobs!
 

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I'm wondering what the lathe is making for the sub? Must be something good. I can't wait to see the finished project. It looks like you are a skilled craftsman Nathan.
 

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Using the lathe, Nathan is making what I presume to be the port flow guides. Here is a rough concept that will help you get the idea...

XXX18 PPP.JPG
 

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That's pretty cool...thanks. There's nothing like dedicated hand craftsmanship. I would suppose that anything mass produced would use cheap plastic.
 

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Do the materials available have a huge impact on the final result?

For example if the flow guides, ports and internal bracing were made out of aluminum, other metals, hardwood, softwood, MDF, particle board (LDF) or hard plastic (polycarbonate or acrylics).

Is it all about mass/density and vibration dampening characteristics?
 

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I gave Nathan a pretty tall order with this sub enclosure. First off it's huge! 25 cu ft after subtracting for bracing, driver and port system. Also it is not a normal ported sub, the port system is much more complicated than just a port in a box. Actually I don't know for sure that it works as described by the patent holder. I'm just assuming that it does:sweat:, since they had it patented, used it in their products and had technical write ups in mags. Also I opted to go for a premium finish(bubinga like my drumset)look at the snare drum in my avatar) and I had pretty strict dimensional limitations. There are a lot of other details too. It's a big project and I'm really anxious to see it come to life as he builds it.

Concerning the materials used...Some are better than others for certain applications. I really dig the small solid aluminum enclosures that Nathan has done, but for this application imagine the weight! It would be impossible to move! Actually we decided to use Birch ply for this mostly because it would save some weight over MDF. I think that we are estimating the enclosure to be about 300lbs:flex: without the 80lb driver in it!
 
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