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SB Acoustics SB17NAC35-4 measurements!
SB Acoustics SB17NAC35-4 measurements!
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Old 25th August 2016, 07:47 PM   #21
Juhazi is offline Juhazi  Finland
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This new SB17 is really exceptional in my eyes. It's cone profile is almost flat at 3-5,5" which gives it uniquely flat treble and still it has low Fs. It should be all right also as midrange crossed say 3-400 and 3500Hz LR2 or elliptic/duelund.

Double 10" or single 15" for bass and waveguide+3/4" tweeter in wide baffle like this http://www.hifi-journal.de/news/2-la...reiklang-video
Click the image to open in full size.
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Last edited by Juhazi; 25th August 2016 at 07:50 PM.
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Old 25th August 2016, 09:18 PM   #22
Bill poster is offline Bill poster  Thailand
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Default SB Acoustics SB17NAC35-4 measurements!

Yeah the cone profile/design is very unusual, esp first picture in the thread.

I have a pair of spare viawaves and was thinking what to use them with. Samdee in Bangkok stocks this exact woofer for a good price.
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Old 25th August 2016, 11:47 PM   #23
InOtIn is offline InOtIn
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Would be interesting to see this compared to the SB17CRC35-4 with the Carbon/Rohacell cone.
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Old 25th August 2016, 11:54 PM   #24
5th element is offline 5th element  United Kingdom
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It's cone profile doesn't seem like anything special to me. Still the usual off axis issues by around 2kHz that you typically see in drivers this size. It still needs a low xover to prevent any off axis issues - at least what I call an issue.
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Old 26th August 2016, 01:36 AM   #25
454Casull is offline 454Casull  Canada
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Quote:
Originally Posted by 5th element View Post
You would not want to cross that high anyway for off axis reasons.
Just the perfectionist in me...
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Old 26th August 2016, 04:34 AM   #26
Juhazi is offline Juhazi  Finland
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It's directivity between 2-4kHz will be perfect match with a shallow waveguide tweeter like this Monacor WG-300 and Vifa XT25TG by kimmosto Wave guides & horns

Click the image to open in full size.
Click the image to open in full size.
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Last edited by Juhazi; 26th August 2016 at 04:39 AM.
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Old 26th August 2016, 05:15 AM   #27
Bill poster is offline Bill poster  Thailand
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The viawaves have a built in waveguide, so this really interests me. A couple of guys over on PE are crossing them around 2.5khz successfully
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Old 26th August 2016, 05:55 AM   #28
Juhazi is offline Juhazi  Finland
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5th, oh I just noticed this! Waves
Nice and creative diy with coaxial projects too! And I have the T20 too!
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Old 26th August 2016, 06:52 AM   #29
diyaudnut is offline diyaudnut  United States
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5E,

nice to see a catalog of your work coming together. Please keep it up.
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Old 26th August 2016, 09:37 AM   #30
Lojzek is offline Lojzek  Croatia
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5th,

very nice "Waves" design. Simple and smart.

edit: Göran, nice job on measurements and the overall DIY projects and web site.

Last edited by Lojzek; 26th August 2016 at 09:47 AM.
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