JDF/JMF amplifiers

[dazzdax]

Hi folks, does any of you know the JDF/JMF power amplifiers? Are the current JMF amplifiers similar in sound as the older JDF? Thank you in advance.

Chris

[Hoerninger]

No experience, just an info:
http://pagesperso-orange.fr/elsi-ing/audio/jdfhome_en.htm
____________
Peter

[dazzdax]

Hi Peter, thx for the info link. Yeah, those are the JDF amps. But I need some impressions from someone who has compared those two related brands.

Chris

[stephane RAME]

Hello,

A links:

http://www.reyaudio.com/power.html

For comparison, raised the question Caladois he can be heard ?

http://vintage-jbl.forumpro.fr/avec-quoi-les-avez-vous-maries-f7/du-transistor-de-partout-boouuuu-t43.htm

It uses the same username on Lansing Heritage

Stéphane

[dazzdax]

Hi Stéphane, thanks for the link and for mentioning fellow's forum participant Caladois. I left a personal message for him in this forum. I hope he will be able to read it. If you have friends who knows the two brands quite well, please refer them to me. Once more thank you.

Chris

[caladois]

I heard both products : JDF and JMF, but on different systems. So , it's quiet difficult to have a good idea. The latest products seems to have a high end construction. Logically, they are updates amplifier. There is no reason why they outperform JDF amplifier.http://nsa02.casimages.com/img/2008/06/28/mini_0806280920283856942.jpg (http://www.casimages.com/img.php?i=0806280920283856942.jpg)

Here is one of my JDF Audio HQS2400 upm. They sound neutral. You should organize a session in JMF-Audio auditorium. Very instructive and impressive. The products are also distribute by ACOUSTIQUE SYSTEME located in north east of France.

[caladois]

I have found an other JDF-Audio HQS2400 amplifier in great condition.
47296 It 's not very nice, but it matched with my JBL.
The new JMF-Audio product is here on their website: http://www.jmf-audio.com/

[caladois]

Here are the Rey Audio (Shozo Kinoshita) amplifiers from JMF-Audio company

[caladois]

Here is the last JMF-Audio amplifier line available with wallnut or alu faceplate. The HQS6001c is a stereo amp and the rest of the product are pure monos units (HQS1000, HSQ7001 and the summit HQS9001).

[caladois]

Hi folks, does any of you know the JDF/JMF power amplifiers? Are the current JMF amplifiers similar in sound as the older JDF? Thank you in advance.

Chris

Cocorico, Allez les bleus !

I will be able to compare in-situ the next 2/3 weeks the JDF and JMF product. I have ordered a brand new HQS6002 (version D)

JDF-AUDIO HQS2400
JMF-AUDIO HQS6002

I will let you know asap.

[caladois]

50547
That's now three months I can listen and compare the JMF and JDF amps. For lot of people, the new HQS6002(D) replace the famous JDF-AUDIO HQS2400. It's true and not.

The sound family is here : smooth, details and effortless

But, the new line seems more accurate, and more precise in 3D image and give us some more space around the musiciens. I believe the power is something like 50w more important.

I am keeping the JDF-Audio for my DIY application. And today, the JMF-Audio is powering my studio monitors.

Last point, the wallnut faceplate is beautiful, and even more compare to the "horrible" professionnal amplifier design of the nineties !!!

[stephane RAME]

Hi Stéphane,
Beautiful collection, you are 5 copies.
Best regards

Stéphane

[caladois]

The JDF-Audio were quiet often associate with Rey-Audio/Shozo Kinoshita system. I have just found this pic on th web. The system is (or was) located in Japan.

[stephane RAME]

Hi,
A rare photo of the subwoofer Kinoshita RIS-1C.

Stéphane

[richluvsound]

My new living room ... :bouncy:

BTW , are they Ribbons I see top right hand corner ?

[caladois]

That's curious, but it really look like !!!

[shinkatsura]

Hello. I ever gone there and heard the great sounds.
The ribbon tweeters were over 6 units and taken around speaker system.

http://www.sente.ch/shimi/Page10.html

I own four JDF HQS3200UPM power amplifier, and two Rey Audio RM7V, KM1V speaker systems.

http://blogs.yahoo.co.jp/bj44v190e

[caladois]

Hello. I ever gone there and heard the great sounds.
The ribbon tweeters were over 6 units and taken around speaker system.

http://www.sente.ch/shimi/Page10.html

I own four JDF HQS3200UPM power amplifier, and two Rey Audio RM7V, KM1V speaker systems.

http://blogs.yahoo.co.jp/bj44v190e

Lucky man !! Is this auditorium still playing music ?
I wish you could share some pictures of your set up. The RM7v are just one of my dream system. The only Kinoshita I listen to were WARP...

I own myself four JDF HQS2400 and HQS2100, and I just purchase JMF-Audio electronics. I really enjoy these amplifiers

[shinkatsura]

Dear sir

Unfortunately, the "Magical Super Studio" (at Aoyama Japan, near JVC Aoyama studio) was already closed over 10 years ago.
But you can hear and see all of Shozo Kinoshita (my friend) at Hakone Japan.

http://www.reyaudio.com/

Shinichi

[stephane RAME]

http://blogs.yahoo.co.jp/bj44v190e/62384826.html
http://blogs.yahoo.co.jp/bj44v190e/58684905.html
http://blogs.yahoo.co.jp/bj44v190e/58673656.html

Stéphane

[4313B]

The JDF-Audio were quiet often associate with Rey-Audio/Shozo Kinoshita system. I have just found this pic on th web. The system is (or was) located in Japan.
I've been fretting over building some stands for my loudspeakers and I think I just found the solution. Thanks for posting the picture.

[stephane RAME]

http://blogs.yahoo.co.jp/bj44v190e/58607668.html
http://blogs.yahoo.co.jp/bj44v190e/58428470.html
http://blogs.yahoo.co.jp/bj44v190e/58393304.html

Stéphane

[Tommy100]

Hello. I ever gone there and heard the great sounds.
The ribbon tweeters were over 6 units and taken around speaker system.

http://www.sente.ch/shimi/Page10.html

I own four JDF HQS3200UPM power amplifier, and two Rey Audio RM7V, KM1V speaker systems.

http://blogs.yahoo.co.jp/bj44v190e

Hello,
What is the specifications for the RX-21 crossover used with the Kinoshita RM7V speakers?
Is it possible to repair them when the capacitors is old?

[richluvsound]

Tommy ,

try getting in touch with Rey Audio ..... I know Kenji has a pair that received a lot of work . Best sounding speaker on the web :applaud:


http://www.youtube.com/watch?v=y-JfHjn9LC4&feature=relmfu

Rich

[Tommy100]

Thanks, I agree they sounds very good. As I understand the TAD 4001 drivers used in the RM7V was developed by Bart Locanthi especially for the Kinoshita/TAD horns. The horns has an even response distribution over its pattern which is unusual.

Tommy

[shinkatsura]

The crossover frequency is 425Hz. It will be impossible exchange only capacitors, you need also exchange choke coils & base board.
So Kinoshita will say that you should exchange RX-21 to RX-21A whole unit.


Hello,
What is the specifications for the RX-21 crossover used with the Kinoshita RM7V speakers?
Is it possible to repair them when the capacitors is old?

[shinkatsura]

He is a great engineer of electronics & speakers.
The relation of Locanthi & Shozo Kinoshita is told in this web.
http://www.reyaudio.com/history-e.html
TAD TD-4001 is developed by Pioneer company when Kinoshita is employed.
Locanthi was a teacher in LS project of Pioneer, and Kinoshita was a leader of this project.
TAD speaker units were produced by this project.


Thanks, I agree they sounds very good. As I understand the TAD 4001 drivers used in the RM7V was developed by Bart Locanthi especially for the Kinoshita/TAD horns. The horns has an even response distribution over its pattern which is unusual.

Tommy

[caladois]

I've been fretting over building some stands for my loudspeakers and I think I just found the solution. Thanks for posting the picture.

I just built stands too :

I couldn't imagine it would modify the sonic performance. ENJOY.

[4313B]

Yours look better than mine.

Mine look like I went to home depot, bought some 4x4, cut it all up and then connected it all together with 1-1/4" dowels...

[caladois]

Don't be so modest...:)

The stand change the sound. That's amazing. the design is inspire from some Japanese products (Kinoshita, JK-Audio...).

[grumpy]

Those look great. Unfortunately for me, my daughter's cat would just find that space underneath as another great excuse to not use the cat box :P Maybe in a few years :)

[Pol]

I have a Reyaudio HQS 3200 for sale (stereo pair mono amps)

[caladois]

What are you asking for ?

[stephane RAME]

http://www.pcmusic.org/ads/view.php/lang/fr/id/84450/JDF-HQS3200-Reyaudio
http://www.macmusic.org/ads/view.php/lang/fr/id/84450/Reyaudio-JDF-HQS3200

Stéphane

[caladois]

J...s that's big money !!!!!

[Pol]

I have a Reyaudio HQS 3200 for sale (stereo pair mono amps)

Not for sale anymore

[martin2395]

Sorry to dig up this old thread, I was doing some reading on Kinoshita stuff and got to these JMF/JDF amps. Does anyone have a picture on how they look on the inside? I can't find ANYTHING.