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Steve's Comments about the DNA Horn (Read 20411 times)
Steve Deckert
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Steve's Comments about the DNA Horn
07/10/11 at 18:20:37
 


http://www.decware.com/newsite/HORN.html


Welcome to the support board for the DNA Horn!  I'd like to make a few comments about this speaker.


The motivation for this design was about building a better mouse trap. I've wanted to do it for a very long time.

Worlds smallest full-range horn - this statement is sure to be discounted as pure BS and will no doubt be fuel for many d.i.y. forum "exeperts" who like to bash my integrity without ever hearing or owning my products.

It's not BS or marketing hype.  Let me hear a smaller single-driver horn cabinet with a response this wide and I'll happily retract the claim.  




Look, I'll be honest with you, there are similar size single-driver horns out there that just drive me nuts because I don't like them and an astonishingly large number of people do.  

My problem with them is that they're very bass shy so they sound lean.  If you stick them in the corners as is recommended, to get a bit more bass, you trade off imaging and sound stage.  

Even  in an ideal room where you flank a large opening with them so that you can have some sound stage depth, the bass is still rolled off (usually at 50Hz or higher) and highly colored by the corners.

What makes this speaker special is it BASS response.  It's real.  It's low.  You'll feel it, and it's clean.  It has the bass of a large full range speaker in a tiny package with the openness and speed of a horn.

The other thing that makes it special is the horn flare design and rear mouth.  The sound that comes from this is non-conjested and supports the main driver with wonderfully coherent ambience. Bottom line, they image like no one's business - and talk about focus... it's benchmark.


For better or worse I'm looking forward to hearing customer comments about these new horns, and I will be demoing them at this years Decware Zen Fest in October.  Since one or two pair of the similar looking horns seem to show up every year, I am particularity looking forward to watching people do comparisons.  I will not be demoing the self-amplified model so it should be a fair shootout.


DIY - I will be offering the plans to build these speakers sometime this winter.

All that said and out of the way, I have every confidence that everyone will agree the speakers perform well beyond their price.  I could have made less expensive cabinets for half the price, but that would have hurt the sound, so better to leave that for the DIY crowd.

Steve




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« Last Edit: 07/10/11 at 18:23:51 by Steve Deckert »  
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ski bum
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Re: Steve's Comments about the DNA Horn
Reply #1 - 07/10/11 at 19:22:57
 
Concerning the passive DNA's, are they available without the cutout on the lower front baffle?



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ZYGI
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Re: Steve's Comments about the DNA Horn
Reply #2 - 07/11/11 at 03:01:50
 
Ski bum,

I'm not sure as to what Steve had decided on the opening on the front, but I could easily omit from the build. I do think that is what we decided to do anyway. I'll confirm that with Steve this week.


Steve's comment about the D.I.Y guys, there was one gentalman  from the UK that pulled quotes from Steve's web site and literally blow it all as snake oil salesmanship. I offered at my own expense to build one of his or any other set of small horns offered on the D.I.Y single driver web site. Take them to Decfest and let the attendees evaluate them. I got no response other than the gentleman from the UK. He  just responded that all that would prove is that they were different. I thought, wasn't that the idea????

I've never heard the final version with the driver Steve put in it, I've tried it with what I had on hand which was two different Fostex drivers and the 4" woofer from the Trapeziums. The later was absolutely awesome.

ZYGI
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Re: Steve's Comments about the DNA Horn
Reply #3 - 07/17/11 at 18:53:06
 
Hi Zygi,

I just ran the little TB driver through my computer.  A very nice & flexible choice.  I suspect that some of the comments by Decware (since pulled) upon introduction of the speaker upset some of the other products' faithful.  Sometimes you just can't win.  OTOH I think that you guys have come up with some interesting designs using a few drivers other designers have largely ignored, like the silver flute in your bookshelf model.  I was wondering if Decware has tried any of the "Heil clones" that are appearing on the market?  On the surface they seem promising.  But enough rambling by me.  I look forward to the Zenfest get together.

Steve
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Re: Steve's Comments about the DNA Horn
Reply #4 - 08/30/11 at 21:43:45
 
I was fortunate enough to have gotten to hear this speaker during my visit last week. It was the first speaker i listened to. I listened to the rest of them, and them came back to it, just to make sure i knew what i was hearing. I was blown away at their performance. i spent the most time listening to this particular pair of speakers. they do exactly as steve says they do. the bass is there and it is real. they image beautifully and produce room filling sound. even on the two watt SET, they produced full sound and were satisfyingly loud. I even told him, that i was amazed that a speaker that size could perform so well, holding its own against the much larger speakers that we auditioned that night. I will no doubt be building a pair of my own as soon as the plans are released. The greatest part about this little pair of speakers is the disappearing act they pull, close your eyes, and you cannot tell that you are hearing speakers. the sound is wide and deep. These are the real deal, and a seriously impressive piece of work from decware.
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Re: Steve's Comments about the DNA Horn
Reply #5 - 09/15/11 at 22:09:33
 
EleviniSeven, that sounds promising.  Thanks for the report.  Any idea when the plans will become available?
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Re: Steve's Comments about the DNA Horn
Reply #6 - 10/11/11 at 23:43:17
 
Ok guys, thos of you that attended the 'ZEN', what did you think of these horns?
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stevef
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Re: Steve's Comments about the DNA Horn
Reply #7 - 10/14/11 at 09:30:42
 
4krow,

It's an interesting design. A nice wide frequency range from about 30 hz on up.  Being a single driver, image and dispersion are quite good. The negatives are limited volume, and a bit of dynamic compression.  This won't bother anyone who listens at low to moderate levels.  Bob's woodwork is first rate as usual. It really isn't a true horn but a reflex with a tapered vent. I liked it.

steve
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Re: Steve's Comments about the DNA Horn
Reply #8 - 10/14/11 at 17:38:14
 
Thank you so much for the info. I have such curiosity about some of these new designs.
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Steve Deckert
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Re: Steve's Comments about the DNA Horn
Reply #9 - 11/13/11 at 03:50:46
 
Here is a 1956 Jensen Imperial folded horn.



This is a true horn folded horn. It has a compression chamber, a vent (slot aka port) and a horn flare. The rear wave of the driver is delayed to be in phase with the front of the driver and has the ability to pass wavefronts to 600 Hz through the horn flare.

Inspired by this, and after having built over a dozen of them for various projects, I designed my own TRUE corner horn based on a very similar design.  

Please see the following white paper:  http://www.decware.com/DCHorn_whites.pdf

The DNA horn is a miniature version of the same design with respect to the compression chamber math and horn flare.  




As you can see, it has a similar compression chamber, a similar slot/aka port, and horn flare. Notice how the horn exponentially expands in a linear fashion.  This is very similar to the Imperial Folded  horn above it.

The only "true" horn (assuming true means "pure") is a megaphone. The front of the driver is loaded by an expanding horn flare that is either conical, traxtrix or exponential. The Imperial, the DNA horn and most others are "rear loaded folded horns" which would logically indicate that there are more than one way to horn load a driver.






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« Last Edit: 01/14/12 at 17:23:55 by Steve Deckert »  
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Re: Steve's Comments about the DNA Horn
Reply #10 - 11/13/11 at 22:23:53
 
Lon, you are right.
I have heard the DNA horns and found them to be quite nice. I didn't get the opportunity to play "my" music on them so I will reserve judgment. But they sounded pretty good on the music I heard at Zen Fest a month ago.
Sorry I dont have the reviewer's vocabulary down, I'll just say that they were pretty damn good sounding.
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Re: Steve's Comments about the DNA Horn
Reply #11 - 11/13/11 at 23:53:52
 
Thanks for relating your impressions Donnie. I'm glad you got to hear them! I wonder how many have shipped, and whether any with amps have shipped.
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Re: Steve's Comments about the DNA Horn
Reply #12 - 11/25/11 at 02:58:27
 
Yes, I'd love to hear a pair too.
The build quality looks first rate!
don
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Re: Steve's Comments about the DNA Horn
Reply #13 - 11/25/11 at 14:19:39
 
Sure does.

I posted this photo on the Steve Hoffman forum. A comment was made "This speaker has genitalia." Smiley
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Re: Steve's Comments about the DNA Horn
Reply #14 - 11/27/11 at 13:14:16
 
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