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Old 18th January 2013, 11:29 AM   #71
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Hijack away.
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Old 18th January 2013, 01:30 PM   #72
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looking at your idea with fishtype laminating oposed to ring like mine, i think you will need perhaps more material then me, you need to have enough material to be able to turn them on a lathe to round shape. I used two sheet of ply 100x50cm, when i cut the big rings, i ws able to fit smaller one inside it, with some even three tings from one cut.

how wil you achieve the inside shape? the back funnel has same diameter as front speaker cutout... at least in my case. I thought of rounding of the inside, or sand it by hand or something to have smoot surface, but somehow dont know how to do it, the biggest step is where the funnel meets the sphere shape, about 18mm a side.

Danny
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Old 19th January 2013, 11:03 AM   #73
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I have adapted the design and split the fish shapes down the middle. So with a router or CNC I will make one half of a 'wishbone' this will allow them to be nestled really close.

I was hoping that the stepped nature of the fish shapes would help with diffraction on the inside, and actually be beneficial. I would either sand or route the hard edges off.

Might be easier to fill the gaps, if you want it smooth, a thin layer of clay or something similar?
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Old 19th January 2013, 02:10 PM   #74
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well looking forward to some of your build ideas... don't forget to make a lot of pics
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Old 19th January 2013, 03:07 PM   #75
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I will.

These are my goal for the next few years...Active, large horns, big subs. Solid wood, heavy cabinets.

I haven't seen anyone using the Mark Audio range for front horns, anyone else?

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Old 21st January 2013, 03:18 PM   #76
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perhaps only one horn, from 150Hz up, i have seen one, although expensive, in germany, about 700 euro/piece
Then you can make a really good PA sub to go with it me thinks.....
Actually I want somethng like this too, in my fathers spare room.... NO WAF
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Old 26th January 2013, 12:44 AM   #77
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I have a pair of MA CHP-70's on there way to me.

Hoping to build a pair of frugal horns mk3. Nice to have a big stockpile of drivers to play with...
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Old 2nd February 2013, 06:09 PM   #78
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Default Work in progress

Just a little taster...
actual shape and inside look. Where is the big step on the inside look, there is the shape change. Up to that step its a sphere, from the step till the end its a funnel.

Danny
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Old 5th February 2013, 10:05 PM   #79
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Forget drive units, I could see an aspidistra going in that.
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Old 6th February 2013, 02:33 PM   #80
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Scottmoose you're same as my wife
put some nice orchids in that she said.....
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