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I'm looking for a wood turner experienced in turning round wooden horns. Any and all leads welcome.
Thanks!
Duke
Me being a dealer makes you leery?? It gets worse... I'm a manufacturer too.
Follow Ups:
Are you planning on re-introducing the Jazz Modules? None of your current offerings use round horns like the Jazz Modules once did.
I think people liked the aesthetic of the Jazz Modules, so yes I'm looking at going in that direction.
Duke
Me being a dealer makes you leery?? It gets worse... I'm a manufacturer too.
You might try eso. I believe he was doing Bruce Edgar's horns.
-Rod
Thank you Rod. Eso contacted me, and I just wrote back to him a few minutes ago.
Duke
Me being a dealer makes you leery?? It gets worse... I'm a manufacturer too.
Try Dave Haris, he made the kits that went into the bull-Nosed Horn I showed last month.Any shape, any size are possible.
Edits: 11/25/14
Wow, that is really nice. That looks a lot more complicated than a round horn would be.
I will give Dave Harris a holler.
My speaker curiosity is piqued. What can you tell us about those two systems?
Where did you show them?
Thanks for sharing the name of your horn supplier with me - I really appreciate that.
Duke
Me being a dealer makes you leery?? It gets worse... I'm a manufacturer too.
I have one of his circular tractrix horns and it is really nice.
High sensitivity, wide dynamic range, low distortion, and smooth frequency response. Pwk
Why go back to the 1990s design? Big round bells are such a pain to integrate most systems with such focus on midbell the rest a afterthought.
My most-requested models used modest-sized round horns, and imo integration with the woofer was one of the strong points. And in my experience people are less likely to "listen with their eyes" if it's a round horn. Also with a profile like the oblate spheroid (perhaps with a minor modification to the mouth radius), I think we're post-90's in performance.
Duke
Me being a dealer makes you leery?? It gets worse... I'm a manufacturer too.
Thought you were thinking big bell 32in. Have you tried Faital Pro or http://www.autotech.pl/pdf/audio_en.pdf or http://stereo-lab.de/1-inch-horn-cf-400Hz-Wave-Guide-Tractrix-Horn-lower-physical-cut-off-frequency-Made-in-Germany-from-Stereo-Lab
I'm looking for a custom profile, something constant-directivity that would pattern-match with its woofer in the crossover region.Duke
Me being a dealer makes you leery?? It gets worse... I'm a manufacturer too.
Edits: 11/26/14
Duke, Bill Grumbine can probably turn anything you need. He may not have turned horns, but he's as talented as they get.
http://wonderfulwood.com/
I can make you a set of wood horns if you like. See my blog posts to see if this is something that suits your needs. I can't change the size or horn flare since my cutting blade is CNC machined for the whole profile.
http://croweaudio.blogspot.ca/2014/06/oblate-spheroidal-horn-completed.html
Very interesting.
Did you have the tool custom made to your specifications? That's what I figured I'd probably need to do - have a tool custom made, that would result in the profile I'm looking for. Which unfortunately would call for a larger round-over at the mouth than what your tool is made for.
Thanks!
Duke
Me being a dealer makes you leery?? It gets worse... I'm a manufacturer too.
Yes I had the blade made on a Cnc machine. I made the drawing of the blade. The blade profile was based on the formula for the oblate spheroidal curve. I wanted this horn flare because of the pattern control at extremely high frequencies. The profile doesn't load as well lower down in the frequency spectrum like an exponential horn but for me I wasn't going for efficiency. This horn provides a very broad coverage right up to the threshold of hearing, which provides a very wide soundstage. Room acoustics therefore impact the overall sound balance but provide a more live listening experience. I'm using the b&c de120 compression driver, what do you plan on using?
I'd be doing something based on the oblate spheroid, but with a wider radius mouth. Just a slightly different set of tradeoffs.
I'm now thinking that being close to my wood turner would be very helpful, so geography is starting to win out over experience. But that's a beautiful job you did!
Duke
Me being a dealer makes you leery?? It gets worse... I'm a manufacturer too.
"Why go back to the 1990s design? Big round bells are such a pain to integrate most systems with such focus on midbell the rest a afterthought."Then what do you suggest instead? Round horns are not good in the vertical, but they are near perfect in the horizontal.
Big speakers and little amps blew my mind!
Edits: 11/23/14
I've been looking into this too, for prototypes I'd look into fiberglass as it's much less expensive but does have some coloration (that may be overcome). For wood the issue is it costs a small fortune and you can buy all the tools to do it yourself for the price of a 2 sets of larger (~20") horns. For now I have someone who will do it for me (they will NOT make horns for anyone else so no use saying who), but I plan on purchasing a dedicated bowl-turning lathe in the next year or so and doing it myself.
Not looking for anything approaching 20" horns; something more Zingali-ish. At some point might move into doing it myself but my days are pretty full already.
I hate working with fiberglass and would rather avoid that if possible.
Duke
Me being a dealer makes you leery?? It gets worse... I'm a manufacturer too.
I looked up Zingali, very cool looking speakers! I'd love to hear them but I've never even seen them before. I'm sure whatever you come up with will sound amazing and I like the direction you're headed in. Wood horns look really good and that's very important! I need big diameter as I'm using a 4.5" driver, so it's more a waveguide but there is definitely some loading happening. It sounds good but it's possible a straight conical horn would work best in my application... I can test that out using one of those conical collars they put on injured dogs or something though. :) Final version will be wood, type of wood makes a difference...
What about this guy on the Asylum trader? He can do round horns.
Big speakers and little amps blew my mind!
Edits: 11/23/14
Thank you. He's in Europe, so that's less convenient, but not impossible. If I strike out here I'll get in touch with him.
Duke
Me being a dealer makes you leery?? It gets worse... I'm a manufacturer too.
Attila made some 100 hz horns for me that he was able to mail me.
To make them light enough for shipping they did require adding mass at the throat. For that I used a combination of BONDO and sand.
Price was good, quality was in proportion to the price. There was lots of work to do to get them finished which was fine with me.
Maybe in the time (over a year ago) since he has been able to improve aspects of his technique.
Good fellow.
A 100hz horn? That I would like to see. Please post a picture and give us the particulars.
Jamie
Big speakers and little amps blew my mind!
"Southern Idaho" has to have a wood turners club or two and lots of turners make salad bowls.
Failing that, have a Woodcraft or Rockler in your area? There's usually a wood turner working in one of those.
At the request of the Moderators,
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There is a wood turner in northern Utah who's not too far away, but I was hoping for someone experienced in horns. If that doesn't materialize, then I'll give him a try.
Duke
Me being a dealer makes you leery?? It gets worse... I'm a manufacturer too.
Those round 'wave-guides' you used on the Jazz Modules made for a sound that I thought would've been "best at show" almost anywhere, not just LSAF, long ago.
Wayne Parhams new catenary horns, when I heard them in my system, with crossover changes to suit, finally trumped that. You might want to arrange to try a pair. The new horns, removal of the attenuation circuit cap and Duelund CAST resistor across the driver inputs is the sound both Moose and I agree is the best we've heard.
At the request of the Moderators,
This space has been deleted
Visually I think the Jazz Modules were my most appealing design, so I'm hoping to head back in that direction.
Duke
Me being a dealer makes you leery?? It gets worse... I'm a manufacturer too.
amioutaline?
I think the Pi H290C is one of the most advanced rectangular horns to date. It is the other option to a round horn.
I think what the horn world needs is two more H290Cs. One for 350hz and one for 500hz. I know Wayne would never want to produce those, and especially not with plastic moulds. The best I think could ever happen would be that Wayne okays a limited fiberglass run from Autotech. That would be awesome, and I would get both.
Jamie
Big speakers and little amps blew my mind!
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