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Old 16th April 2013, 09:36 AM   #161
Juhazi is offline Juhazi  Finland
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I look at response with 2ms, 3ms 6ms, 20ms and 300ms always. I like to show you the 20ms graphs because they look nicest! I use 2, 3 and 6ms for xo fine tuning and phase matching.

The two lowest xos are most difficutl to measure and adjust in a room, because of reflections. I will take the lMhMThM complex out as soon as I can!

I want to see vertical directivity too, it should be like a cannon!! One of the design objectives is to minimize floor reflection to the listener(mic). This is done by using a tilted 12" lM dipole and a hMThM configuration. My listening distance in the final setup in my living room is 2,5 - 3m.

p.s. I just cut the baffle edges to follow the edges of the drivers. XO needed adjustment thus. v9 coming...
Click the image to open in full size.
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Last edited by Juhazi; 16th April 2013 at 09:40 AM.
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Old 16th April 2013, 08:49 PM   #162
Juhazi is offline Juhazi  Finland
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AINOproto v9

Reduced MTM baffle
xo modified to use dipole curves to maximum - not lookin' at dispersion meanwhile
- sofware xo very peculiar
- acoustic xo quite nice and between LR2 andLR4
- phase matching not very good (basically ok but I must go sleeping now!)
- horizontal dispersion ok with some bumps (room, dipole bloom/dip??)

Not yet listened to, it is too late for that.... (minidsp/REW/foobar is a quite nice combo! I can listen to music and while it is playing I can hear changes of minidsp settings immediately! And presto - I can make measurements by switching windows on the screen.)

Piccies and grapphies...
Attached Images
File Type: png ainoproto v9 30¤ spl all indiv 3ms.png (71.8 KB, 374 views)
File Type: png ainoproto v9 30¤ 0 30 60¤ 20ms.png (60.2 KB, 366 views)
File Type: jpg AINOproto v9 baffle raw.jpg (159.3 KB, 364 views)
File Type: jpg AINOproto v9 xo minidsp.jpg (184.0 KB, 358 views)
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AES Associate Member / My DIY speaker history: -74 Philips 3-way, -82 Hifi 85B, -07 Zaph L18, XLS10+PR/Hypex, -08 CSS125FR, -08 Hifitalo AW-7, -08 TangBand FR, -09 MarkK ER18DXT, -13 PPSL470, -13 AINOgradient

Last edited by Juhazi; 16th April 2013 at 09:08 PM.
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Old 17th April 2013, 04:06 AM   #163
Juhazi is offline Juhazi  Finland
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Photos of v9 and a semi-freehand sketch of the AINO GRADIENT sideview

Body/post parts CNC'd of aluminium alloy, birch laminate?

I am loosing Alvar's touch, the idea of a birch laminate arch... sigh
Attached Images
File Type: jpg AINOproto v9 baffle.jpg (162.0 KB, 165 views)
File Type: jpg AINOproto v9 side.jpg (180.9 KB, 182 views)
File Type: jpg AINO GRADIENT body side v9.jpg (204.1 KB, 153 views)
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AES Associate Member / My DIY speaker history: -74 Philips 3-way, -82 Hifi 85B, -07 Zaph L18, XLS10+PR/Hypex, -08 CSS125FR, -08 Hifitalo AW-7, -08 TangBand FR, -09 MarkK ER18DXT, -13 PPSL470, -13 AINOgradient
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Old 17th April 2013, 05:47 AM   #164
Juhazi is offline Juhazi  Finland
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If I am loosing Alvar Aalto's style with Aino Gradient, I will get consolation by going to a concert to a hall designed by the master!

The Finnish Air Force Big Band will give a concert tomorrow, playing tunes and arr's of Quicy Jones! Mr. Jones himself has digged his archives to give original '50s arrangements. The FAF headquarters are in Jyväskylä.

The hall Aalto-sali (1925) is an early and a bit peculiar work of Aalto, it has heavy infuences of Italian classic/rural architecture. Aalto had his first office here in Jyväskylä.

Click the image to open in full size.
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AES Associate Member / My DIY speaker history: -74 Philips 3-way, -82 Hifi 85B, -07 Zaph L18, XLS10+PR/Hypex, -08 CSS125FR, -08 Hifitalo AW-7, -08 TangBand FR, -09 MarkK ER18DXT, -13 PPSL470, -13 AINOgradient
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Old 17th April 2013, 03:05 PM   #165
Juhazi is offline Juhazi  Finland
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I friend of mine is an engineer at Karibu, he promised to help with cad modelling of the post for AINO! He usually does these, I hope he don't suggest too many mods!
Click the image to open in full size.

AINOproto v9
Some 90dB level measurements after listening tests and minor level adjustment,
xos acoustically 300/1050/3200

A part of listening tests is JJ Cale's Grasshopper album. The recordings are top quality but you can easily hear the sound of different studios and locations. I also listen to solo piano of Iiro Rantala and some pieces of Ry Cooder and Badding Somerjoki!

The DAC I use is ObjectiveDAC by NwAvGuy, made by Head'nHifi-Walter
Attached Images
File Type: png ainoproto v9 30¤ all indiv 6ms 90db.png (85.8 KB, 55 views)
File Type: png ainoproto v9 30¤ spl phase 6ms 112.png (84.4 KB, 39 views)
File Type: png ainoproto v9 30¤ 0 30 60¤ 6ms.png (79.7 KB, 34 views)
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AES Associate Member / My DIY speaker history: -74 Philips 3-way, -82 Hifi 85B, -07 Zaph L18, XLS10+PR/Hypex, -08 CSS125FR, -08 Hifitalo AW-7, -08 TangBand FR, -09 MarkK ER18DXT, -13 PPSL470, -13 AINOgradient

Last edited by Juhazi; 17th April 2013 at 03:23 PM.
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Old 17th April 2013, 05:31 PM   #166
Juhazi is offline Juhazi  Finland
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Here is "Jean and Aino" by Iiro Rantala in Spotify

Please listen!

Or preferably do a favor and buy this highly appreciated record, "Lost Heroes" Iiro Rantala
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AES Associate Member / My DIY speaker history: -74 Philips 3-way, -82 Hifi 85B, -07 Zaph L18, XLS10+PR/Hypex, -08 CSS125FR, -08 Hifitalo AW-7, -08 TangBand FR, -09 MarkK ER18DXT, -13 PPSL470, -13 AINOgradient

Last edited by Juhazi; 17th April 2013 at 05:39 PM.
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Old 23rd April 2013, 06:33 AM   #167
Juhazi is offline Juhazi  Finland
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AINO GRADIENT speakers' construction has begun!

I asked the carpenter Tommi Koivisto to do do the Ainoglass shaped box and the post for dipoles. Material for the box is MDF, laminated discs, painted by some car paint shop. The post will be solid Finnish birch and birch plywood (aircraft quality).
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AES Associate Member / My DIY speaker history: -74 Philips 3-way, -82 Hifi 85B, -07 Zaph L18, XLS10+PR/Hypex, -08 CSS125FR, -08 Hifitalo AW-7, -08 TangBand FR, -09 MarkK ER18DXT, -13 PPSL470, -13 AINOgradient
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Old 17th May 2013, 06:30 AM   #168
Juhazi is offline Juhazi  Finland
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I got the boxes yesterday. They have not been painted yet but I wanted to see them installed and perhaps I can do some outdoor measuerments and minidsp adjustments.

The box is made of MDF discs glued together. The cavity has pentagon shape. The body for dipoles is solid birch and birch plywood, coated with Tung oil. Parts are connected with bolts and screws. The weight is 41kg/speaker, with drivers. Height is 110cm (95cm to mid of the tweeter)
Attached Images
File Type: jpg AINOgradient no paint.jpg (255.5 KB, 149 views)
File Type: jpg AINOgradient no paint side.jpg (204.7 KB, 1438 views)
File Type: jpg AINOgradient pentagon.jpg (193.1 KB, 166 views)
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AES Associate Member / My DIY speaker history: -74 Philips 3-way, -82 Hifi 85B, -07 Zaph L18, XLS10+PR/Hypex, -08 CSS125FR, -08 Hifitalo AW-7, -08 TangBand FR, -09 MarkK ER18DXT, -13 PPSL470, -13 AINOgradient
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Old 17th May 2013, 07:33 AM   #169
Rudolf is online now Rudolf  Germany
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I'm eager to see how you get the wiring done without compromising the actual clean look of the AINO - which I like.
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Old 17th May 2013, 07:50 AM   #170
Juhazi is offline Juhazi  Finland
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The wiring has two options.
- "let 'em hang" open wires like in post #163
- "hide" run wires along the backframe

The post for the 12" speaker and box's top plate have a 10mm hole drilled through. All wires will run inside the box to the bottom plate's connectors.

There is not enough room in the box, ICEpower amps will be external.
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