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Yuichi A290 CAD plans
Yuichi A290 CAD plans
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Old 9th December 2018, 10:12 PM   #21
barackuda is offline barackuda  Slovakia
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Old 11th December 2018, 04:38 PM   #22
barackuda is offline barackuda  Slovakia
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small update:
had a chat with the manufacturer. looks promising regarding the price per 1 set (4 main parts + 8 fins). The horns will be done without the side panels, as these are partially curved and then straight. Easily done at home.

Danny
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Old 22nd April 2019, 09:53 AM   #23
barackuda is offline barackuda  Slovakia
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Small update. Stacked wood panels are beeing glued now, hope to get material shipped to the company next week. The price for 4 pcs of horn curves and 8pcs of fins should be half of the current ebay offerings.
In the mean time I am playing with some JBL 2226h drivers. Changing the surround, cone, spider and voice coil to buipd my own super2226.
Testing of TS parameters will follow as soon as I get a measuring mic and test box built.
I dont have high hopes, its just an exercise to lower the Fs and perhaps improve the spectral decay a little (rebounce of driver).

P.S.: sorry for lack of words

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Last edited by barackuda; 22nd April 2019 at 10:03 AM.
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Old 22nd April 2019, 09:56 AM   #24
Zvu is offline Zvu  Serbia
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It looks like JBL 2235H.

Do you have TS parameters and Frequency response graphs - before and after, so there is something to compare ?
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Old 23rd April 2019, 10:08 AM   #25
barackuda is offline barackuda  Slovakia
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Quote:
Originally Posted by Zvu View Post
It looks like JBL 2235H.

Do you have TS parameters and Frequency response graphs - before and after, so there is something to compare ?
Its not 2235H, just looks like that. TS parameewrs will follow. I have a 2226H with OEM cone, and this one. Have to build a test box and buy some measuring equipment. My goal is to lower Fs to abour 32-35Hz without adding any mass. I am now at 92g and will keep it at that

Your opinions on Dayton Audio DATS V2 measuring software?
Dayton Audio DATS V2 Computer Based Audio Component Test System
Danny

Last edited by barackuda; 23rd April 2019 at 10:12 AM.
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Old 23rd April 2019, 10:58 AM   #26
Zvu is offline Zvu  Serbia
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I have it. It works like a charm.
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Old 23rd April 2019, 01:29 PM   #27
jzagaja is offline jzagaja  Poland
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Yuichi A290 CAD plans
Can you measue A290 polars?
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Old 10th June 2019, 02:45 PM   #28
Bergfinn is offline Bergfinn  Norway
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Is there someone here willing to share CAD files for A290FL with me?
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Old 10th June 2019, 03:47 PM   #29
planet10 is offline planet10  Canada
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Yuichi A290 CAD plans
I only have some preliminary drawings, but am willing to share what i have.

dave
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Old 10th June 2019, 09:22 PM   #30
Bergfinn is offline Bergfinn  Norway
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I have some drawings myself, but I need CAD files for CNC.
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