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Old 21st December 2014, 11:36 PM   #1
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Default Decware DNA horns

Hello all.

I am new to DIY audio and this forum so your patience is appreciated.

I am currently building a pair of Deware Z-kit1's as mono blocks with a matching pair of Decware DNA horns utilizing Mark Audio Alpair 10p drivers.
The drivers were recommended by Steve Deckert (Decware)
The speakers are built out of Baltic birch plywood.
My question is has anyone else tried this build with these drivers?

Thanks
Mike
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Old 21st December 2014, 11:48 PM   #2
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We have built the horn, but not tried the A10p. The A10p is a very nice driver, my 1st question would be is the DNA horn large enuff to get the best out of them?

dave
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Old 21st December 2014, 11:49 PM   #3
xrk971 is offline xrk971  United States
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When you started this new thread it surely must have asked you if you had seen this thread: Decware DNA Horn
You added an s to the title and made a new thread. In any case, I have a model of the DNA and can run the A10 in it. You mean the A10P for paper cone right?
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Old 22nd December 2014, 03:02 AM   #4
chrisb is offline chrisb  Canada
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A10's frame size might be a physically tight fit - it's been so long that I don't have the drawings handy, and the enclosures are buried in the dungeons at Dlugos manor

The DNA with the originally intended TB model actually works quite well, and is a very compact footprint, but I'd opine that the FHXL with either Alpair 10 would deliver substantially larger scale performance.
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Old 22nd December 2014, 03:40 AM   #5
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Quote:
Originally Posted by chrisb View Post
A10's frame size might be a physically tight fit
It's definitely a tight fit. I recall the one's you brought over were quite petite.

jeff
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Old 22nd December 2014, 03:51 AM   #6
xrk971 is offline xrk971  United States
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Default Model of A10P in DNA

The DNA really needs a back wall to help enhance the bass. Here is a sim with the speaker 8 in away from a back wall sitting on a 24in high stand. It will need a 5ohm & 1.2mH BSC.

With the A10P, you can get pretty decent bass and response, but you lose some sensitivity with BSC:

Click the image to open in full size.

Cone displacement:

Click the image to open in full size.

Regarding fit: the driver cutout is a 5.5 in dia hole and the bezel is 6.5 in dia. The internal width of the DNA is 10.5 in wide so there is plenty of room...
Attached Images
File Type: png DNA-A10PA-Freq-1m-b.png (21.4 KB, 302 views)
File Type: png DNA-A10PA-displ-b.png (16.3 KB, 298 views)

Last edited by xrk971; 22nd December 2014 at 03:56 AM.
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Old 22nd December 2014, 03:58 AM   #7
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Why does your graph have FE167E listed?

jeff
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Old 22nd December 2014, 04:10 AM   #8
xrk971 is offline xrk971  United States
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The script was originally for the FE167E and I forgot to change the script name when I switched the driver T/S parameters... good eyes.
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Old 22nd December 2014, 06:02 AM   #9
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The enclosures are small being only 28x8x12 however the MA Alpair 10p does fit. I am trusting the man behind Decware, Steve Deckert, on this as he feels that this combination cabinet and The MA Alpair 10p ( yes paper) sounds fantastic. Even better than the original driver it was designed for. He has heard and built far more "audiophile" speakers than I ever will. My concern is accuracy on my cuts as there is a lot of angles in this build. I am trying to keep within a 1/16"... . If anyone is interested he does provide a bit of recorded audio from this combination on his site.
What interested me was the bass response that was in the low 30's..
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Old 23rd December 2014, 03:44 AM   #10
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Nothing wrong in using the DNA, and it may even sound fantastic... but as many wiser folks than me here suggest: you should build a box/horn designed for a certain driver and not try to fit a driver in a particular box. You will lose bass extention among other things.
If you can afford the space, you should go for the FHXL.
If you can't have angular cuts you can build the pensil.
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