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My Frust pyramid tempest almost done (1 Viewer)

Chris Tsutsui

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as promised: My build process site The panels are cut, site explains all.
The shape is a frustum pyramid in which I might add a pyramid to the top to make it an obelisk for cosmetic purposes.
Panels will be of finished maple, top will be brushed aluminum, bottom will be white laquer.
It is a Tempest adire aligntment re-formed into the custom shape, going in the room in the picture which is 10x10'. Being built with the aid of a professional contractor friend at his wood shop. Edges will be lock mitered for air tight seal, glue, and then caulked. Pre-laminated maple sheet for sides grain up/down, costing $80 for 1 sheet.
The box will be finished next Sunday when I have the time to work on it (school). For now the panels rest in it's form in my room next the lonely driver. :frowning:
Links are on site to the designs, I made 2 cad drawings to aid in build. One of the finished boxes will be sold for only $150, while the maple one goes in my room. We will keep the templates in case we want to build more.
Special notes: We bought 3 sheets of A-grade MDF at home depot and it wouldn't fit in my 4runner. So we had to transport 3 sheets via walking and cart across the street to the shop. (we J-walked) In case you didn't know, a full sheet of dense MDF weighs roughly 100lbs, multiply that by 3 and picture 2 skinny college boys j-walking across a 2-way socal street. :)
There was enough sawdust to half fill a barrel because of the router we used. We accidentaly ran MDF with screws in it through an industrial drum sander. (which now has small grooves). doh
The bandsaw bottom rubber belt broke when making the maple legs so we had to special order a new one, and use a different bandsaw.
Other than that, the build went smooth, in and out in about 4 hours. All that's left is assembly, hole cutouts, and finish.
Wish me luck, I'll post again next sunday when i'm finished.
 

Chris Tsutsui

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Feb 1, 2002
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I am breaking in my tempest in free air at night (Doesn't make noise if resting on the carpet) Is this a good idea before I put it in the box and it has to make noise to break in?

I hooked the PE #300-794 amp to only one voice coil and did not short the other one. Is this safe? I am alternating voice coils in case each one needs excersize.

If it's 8 ohms now am I breaking in the amp/driver properly? Should I use pink noise or just keep playing an MP3 Loop of bass and hard hit songs.

I'll work more on the box tomorrow, I have company coming over next weekend and wish I could accelerate the plans for this galactic bass station.

"Ahhh yesss, everything is proceeding as I have forseen"
 

Dave Poehlman

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I am breaking in my tempest in free air at night (Doesn't make noise if resting on the carpet) Is this a good idea before I put it in the box and it has to make noise to break in?
It shouldn't matter. You're just flexing the surround and the spider either way. Just make sure it doesn't hop out of the room. ;)
 

Chris Tsutsui

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Joined
Feb 1, 2002
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I'll have available 2 cad drawings, as well as the formulas used to calculate the net volume of the enclosure.

(once i'm finished of course)

The box is actually fairly easy to make once you have the right measurements and calculations.
 

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