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Old 6th April 2013, 05:17 AM   #81
puppet is offline puppet  United States
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As far as Ash, not so great for turning, imo.


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Tell that to Babe Ruth, Hank Aaron, Reggie Jackson ... you get the idea
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Old 6th April 2013, 05:51 AM   #82
JLH is offline JLH  United States
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That is an impressive lathe, but complete overkill for most turned horns. I built Romy's full size 126Hz tractrix horns using a $300 Sears wood lathe. I detached the stock head and built a stand with a pulley reduction system and a couple pillow bearings.

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Ah, how beautifully the orchestra sounds before a rain! In a dry sunny day there is no way for the instruments to sound this way!
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Old 6th April 2013, 06:12 AM   #83
JLH is offline JLH  United States
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When building your horns I highly recommend you cut the center out of each layer. It will save you so much time it is well worth it. Many times the center cut outs from the larger pieces are big enough to get another layer. In addition, cut out each layer to the angle as it is laid out on your pattern. Transfer the angle of the layer from your pattern to your saw and cut out the layer. This will also save you a ton of time on the lathe. I'd also recommend turning large pieces in two or even three sections to keep them manageable. Use aligned dowel rods to join the sections together. Lastly, there is no need for clamps when building these kind of layered horns. I use glue and screws. I glue a layer up and put 6 screws in it to serve as the clamp. On the next layer I rotate my screws 30 degrees so I don't hits the screw heads in the layer below it. Using this method you can build up the entire horn in under an hour. Let it dry over night and it is read for the lathe the next day.

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Old 6th April 2013, 12:44 PM   #84
djn is online now djn  United States
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Very impressive J. I've seen those in pix of R's system and always wondered about them. I know a lot of woodturners that use that method of build up. I want my horns to be made from hardwood and finding pieces that big is a challenge. I'll be doing a lot of glue ups to begin with.

I am also using this lathe for production not related to audio. It and the shop press are necessary for that.
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Old 6th April 2013, 12:45 PM   #85
djn is online now djn  United States
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Tell that to Babe Ruth, Hank Aaron, Reggie Jackson ... you get the idea
good point.
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Old 6th April 2013, 01:53 PM   #86
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Hi JLH, in looking at the throat and driver mounting section of that horn, does it use an M4? Sorry djn, dont mean to derail your thread.
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Old 6th April 2013, 02:05 PM   #87
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No problem 1. Good question.
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Old 6th April 2013, 04:49 PM   #88
JLH is offline JLH  United States
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Hi JLH, in looking at the throat and driver mounting section of that horn, does it use an M4? Sorry djn, dont mean to derail your thread.
A M4 as in the Community M4 large scale compression driver? If that is your question, then the answer is no. I would never use that driver in a hi-fi system. Their sound quality is very poor. These horns used the now discontinued Fane Studio 8M.
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Old 6th April 2013, 06:14 PM   #89
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At a glance it looked like that was what it was cut out to receive. I was going to ask how that worked out.

I feel better now, thanks.
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Old 6th April 2013, 10:19 PM   #90
JLH is offline JLH  United States
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At a glance it looked like that was what it was cut out to receive. I was going to ask how that worked out.

I feel better now, thanks.
I can see how you might think that by looking at the pictures. All those holes were for the bolts to hold the back chamber cap in place.
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