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Old 8th November 2009, 04:12 PM   #1801
mluckow is offline mluckow  United States
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Those are the speakers that were reviewed by Constantine Soo at Dagogo in June.

Constantine Soo reports on living with objects created by master craftsmen and national living treasure of Japan that is the Feastrex Makoto loudspeaker system - Equipment Reviews - Dagogo
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Old 8th November 2009, 07:28 PM   #1802
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Default Planet10's Floyd Toole reference

Dave,

Thanks for referencing Floyd Toole and his work on measurement. This is very informative.

Do you have any other suggestions on loudspeaker / room measurement research that you might share?

I have recently finished a dedicated listening room, Winston Ma / George Cardas based. It's front wall behind speakers is 21' x 13' (w x H), length is 34' with the rear wall at ~27' x ~17' (W x H). Yes non-parallel side walls. Uncanny acoustics.

The room is for my Feastrex D9e III; still sitting in their boxes. I did hear them play at RMAF 2008 in Hal's vented box along with the 5e III Nessie. I'm thinking of mating them in Joe's OB Granada like configuration.

Between the unusual room and the active EQ crossover I need to address my shortcoming in measurement knowledge. Any suggestions are most appreciated.

Kevin
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Old 8th November 2009, 10:33 PM   #1803
BTW is offline BTW
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Quote:
Originally Posted by talawalla View Post
Hello Bunpei!

Kindly tell us a little more about the changes from the standard or previous Type III that make the Type III CW driver unique.

Thank you very much,

Joe Cohen
I've just sent my D9e Type I for the CW upgrade... Will post my impressions of the upgrade when I get it back from Mr Teramoto.
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Old 10th November 2009, 01:57 PM   #1804
Bunpei is offline Bunpei  Japan
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Quote:
Originally Posted by volapuck View Post
... The room is for my Feastrex D9e III; ...
Quote:
Originally Posted by BTW View Post
I've just sent my D9e Type I for the CW upgrade...
It's really a great thing that both of you own D9es.

In Feastrex BLOG page, important parts for Dimension-9 Exiter Type III CW Model were unveiled.

1. Before mounting cone, finished with Urushi by Mokoto Tanaka
Click the image to open in full size.

2. Yoke with pole piece and top plate, made with 100 % permendur
Click the image to open in full size.

3. Field coil assembly with CW improvement
Click the image to open in full size.

4. Magnetic circuit assembled
Click the image to open in full size.

5. Magnetic circuit and basket frame machined from gunmetal block
Click the image to open in full size.

6. Zoom up of urushi finished fine surface
Click the image to open in full size.

7. Cone, voice coil & damper assembly are not completed yet
Click the image to open in full size.

Dr. Akiyama and Hal are currently busy on making further improvement for a cone, voice coil & damper assembly. Please look forward to seeing a new announce on the product.

Bunpei
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Old 10th November 2009, 02:11 PM   #1805
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I saw these at the recent Sight & Sound show in Singapore :

Click the image to open in full size.

It's a Feastex 5 in mounted in a horn cabinet with curves. I think it called algahorn or something.

Regards,
Joe Ling
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Old 10th November 2009, 02:12 PM   #1806
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Quote:
Originally Posted by volapuck View Post
The room is for my Feastrex D9e III; still sitting in their boxes. I did hear them play at RMAF 2008 in Hal's vented box along with the 5e III Nessie. I'm thinking of mating them in Joe's OB Granada like configuration.
Any thoughts from anyone who has heard both Tanaka's tubes and Joe's OB Granada's as to how they feel the tube/OB compares (granted, different driver)?

I went back all three days both year, several times, and really liked the Nessies for what they were, but never heard the Granadas shine...
Maybe the crossover/room correction/amps/who knows what,
or maybe I just like the "resonant" tube sound better than the "bouncy" OB sound?
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Old 10th November 2009, 03:59 PM   #1807
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Quote:
Originally Posted by volapuck View Post
Do you have any other suggestions on loudspeaker / room measurement research that you might share?
Joe d'Appolitto's book on measuring speakers is invaluable for nuts & bolts techniques.

dave
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Old 12th November 2009, 12:10 AM   #1808
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Quote:
Originally Posted by joeling39 View Post
I saw these at the recent Sight & Sound show in Singapore :

Click the image to open in full size.

It's a Feastex 5 in mounted in a horn cabinet with curves. I think it called algahorn or something.

Regards,
Joe Ling
It will be more meaningful to have your listening impressions.
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Old 12th November 2009, 03:36 PM   #1809
Bunpei is offline Bunpei  Japan
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Default NF5 in stylish dry lacquer substrate cabinet

A new topic from Feastrex BLOG.

A young Japanese craftswoman or craft artist, Ms. Mayumi Ikuta, is exhibiting her craft products at a gallery, Savoir Vivre, in Roppongi, Tokyo.
Though her basic style is in traditional, shapes she created are very modern and stylish.

Among her highly refined Urushi finished original products,
Click the image to open in full size.
Click the image to open in full size.

the biggest one is a pair of speaker cabinets using a Japanese traditional technique called "dry lacquer substrate(Kanshitsu in Japanese)" and it mounts basic Feastrex NF5 drivers.
Click the image to open in full size.

A simple definition of "dry lacquer substrate" is found here. Handbook for the Appreciation of Japanese Traditional Crafts
"Kanshitsu (dry lacquer substrate) = Successive sheets of hemp cloth are pasted over a mould with nori-urushi, a mixture of urushi and rice paste, or a similar adhesive. Once the desired thickness has been obtained, the fabric form is removed from the mould and lacquered. This method allows a high degree of flexibility in the creation of different shapes."
Bunpei remembers that a famous Buddhism statue "Asura" (a Japanese national treasure in Nara) was created by the method about 1,200 years ago.
Click the image to open in full size.

According to Ms. Ikuta, this method and material can be compared with modern carbon or glass fiber composites.

Dr. Akiyama and HAL are giving their advices on this project.
Click the image to open in full size.
Click the image to open in full size.

According to Dr. Akiyama, this design has just started and they have been recognizing some points to be improved so far. For example, Bass.
It is not a closed enclosure. There are totally three openings; at bottom, front and back.

Bunpei listened its sound two days ago briefly and got such an impression;
- No adverse or unexpected vibrations or resonance were perceived on the shell. The shell seems to have very smooth & hard surface and enough strength and rigidity.
- Its sound is very clean, bringing out the best in midrange and treble of Feastrex NF.
- However, as Dr. Akiyama mentioned, bass is to be improved.

In the next post, I will show how to manufacture the cabinet.

Bunpei
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Old 12th November 2009, 04:14 PM   #1810
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Default Art and Feastrex

Those are insane looking speakers!!!

If I were walking down a dark street in the middle of the night and I came across those guys I might just run in opposite direction.
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