MJ Magazine (formerly Musen to Jikken) - Yearly Index from 1924 - 2009 wanted

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tiefbassuebertr

tiefbassuebertr

Member
Joined 2005
tiefbassuebertragung.de
This magazine, founded in 1924 by Mr. Mitsugu Tomabeji, is one of the earliest and most influential radio magazines that I know. In the early years it was Radio experimenter's magazine (Musen to Jikken = Radio and Experiments). The early publisher of this magazine was the currently brand ITO and the currently publisher now is Mr. Seibundo Shinkosha.
https://web.archive.org/web/2008101.../english/corporate-profile/history/index.html
In general this magazine is a DIYer magazine and is very technical but is full of great articles on electronics and speaker design, room acoustics, audio history, as well as reviews, news, show reports, etc.

Very great similarity I note to the french magazine 'l Audiophile from 1977 until 1989 - go for table of contents to
http://6bm8.lab.free.fr/Documentations/Revues/Audiophile/index-1977-1988.html
The table of contents (INDEX) I can get about compact disc's:
CD1: 43 editions from 1977 to 1988- Part I:
go to
https://web.archive.org/web/20100518094713/http://nicolas.davidenko.perso.sfr.fr/revue/revues2.htm
for information in detail. Please note, the kind of the magazine is changed from 1989 (now a normal testing magazine like "Stereophile"
CD2: 32 numbers from 1989 to 1995 - Part II

I want to have all articles about solid state pre-amplifier and power amplifier topologies published in this MJ magazine.
Where I can get table of contents about the MJ Magazine for download or as CD-ROM and what about translations in various other languages?

here various URLs:
http://www10.big.or.jp/~dh/sakuma/index.html
https://web.archive.org/web/2008120...ck/Texts/GeschlosseneGesellschaft/2-5-10.html
JSTOR: An Error Occurred Setting Your User Cookie
??¸ ?'75 Stereo Technic ???????? McIntosh/JBL/audio-technica/Jeff Rowland/Accuphase/?/?¾?????
??????/TOP???
Subscription information for "MJ"
http://www.fujisan.co.jp/Product/244
Patent US4079333
http://www.diyaudio.com/forums/swap-meet/129395-mj-audio-technology-magazine.html
http://www.diyaudio.com/forums/everything-else/136060-why-i-buy-mj.html

BTW - you will get very interesting cover images about google by follow japan keyword:
"無線と実験" (english: "Experiments with radio")
 
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turnA_zpoint

turnA_zpoint

Member
Joined 2006
www2.plala.or.jp/puthoff/
tiefbassuebertr

tiefbassuebertr

Member
Joined 2005
tiefbassuebertragung.de
thank you very much. Here I find a lot.

By searching I discover a magazine from the attachement. Do you know the complete title? It seems similar to the MJ magazine.
 

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turnA_zpoint

turnA_zpoint

Member
Joined 2006
www2.plala.or.jp/puthoff/
Hi tiefbassuebertr

I have found similer page.

"http://www.hifido.co.jp/KW/G7003/J/0-10/C09-39958-45428-60/"

"http://www.hifido.co.jp/KW/G7003/J/0-10/"

The title is below

"Musen to Jikken "(Wireless and Experiment) separate volume '75 Stereo "Technic"(technique)

Wireless and experiment separate volume.
Feature.
Color version.
Measurement and hearing of open-reel tape-deck.
Diy speaker system and it's structural dimensional drawing .
S50.1.15 issue.

Regards!
 

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tiefbassuebertr

tiefbassuebertr

Member
Joined 2005
tiefbassuebertragung.de
turnA_zpoint said:
Hi tiefbassuebertr

I have found similer page.

"http://www.hifido.co.jp/KW/G7003/J/0-10/C09-39958-45428-60/"

"http://www.hifido.co.jp/KW/G7003/J/0-10/"

The title is below

"Musen to Jikken "(Wireless and Experiment) separate volume '75 Stereo "Technic"(technique)

Wireless and experiment separate volume.
Feature.
Color version.
Measurement and hearing of open-reel tape-deck.
Diy speaker system and it's structural dimensional drawing .
S50.1.15 issue.

Regards!
Click to expand...

Thanks again for this additional URLs and the translation of the headlines from the cover
When future versions of "ABBYY FineReader" also offer the identify of Japanese characters, I can create jpg files with text through scanning the sites of this magazines and then transform in doc. After do this I can try about the language tools a translation in German or English.
I think, in few years the translation losses are lower than today.

Greetings to Japan
Andreas
 
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tiefbassuebertr

tiefbassuebertr

Member
Joined 2005
tiefbassuebertragung.de
Here an off-topic question:
I have start several threads here, where I could help only members from Japan, or members who know well in Japan.
Maybe you have some hints to one of this questions - thank you very much

http://www.diyaudio.com/forums/digi...ch-ct-1-ct1-better-than-vam1254-cdpro2lf.html
http://www.diyaudio.com/forums/digi...k-about-sonys-kss-optical-pick-up-series.html
http://www.diyaudio.com/forums/pass...ed-zen-firstwatt-se-projects-where-order.html
http://www.diyaudio.com/forums/digi...els-use-high-quality-transport-mechanism.html
http://www.diyaudio.com/forums/digi...lt0h30pa-inside-philips-cdm12-vam12-mech.html
 
turnA_zpoint

turnA_zpoint

Member
Joined 2006
www2.plala.or.jp/puthoff/
Hi tiefbassuebertr

I regret I know little .
but some information below

[1] Heat sink
Amp used Heat Pipe
1."http://audio-heritage.jp/SONY-ESPRIT/amp/ta-f80.html"
2."http://www.niji.or.jp/home/k-nisi/l-01a.htm"

DIY heat Pipe
1."http://fish.miracle.ne.jp/y-sono/HPhowto.htm"

Person who was engineer of "Sansui" "History of Japan audio"
1."http://www.ishinolab.com/modules/doc_serial/audio_history_japan/"
>>>No.27 "Article on super-feedforward circuit and heat pipe"

[2]Difference of tone quality by drive
Interview of engineer of Plextor
1."http://av.watch.impress.co.jp/docs/20010611/dal14.htm"
>>Influence of current of servo on analog circuit
(maybe via earth)
So Teac is decrease the servo current..I think.

>>"http://ednjapan.rbi-j.com/issue/2007/9/6/28/4"
By Engineer of TI
"Difference of sound by coaxial connection and
optical connection.With data"

Interview of engineer of Taiyo Yuden
2."http://av.watch.impress.co.jp/docs/20010618/dal15.htm"

Interview of engineer of Press maker
3."http://av.watch.impress.co.jp/docs/20011016/dal29.htm"

CD-R
Interview of engineer of Plextor
1."http://www.itmedia.co.jp/news/0212/18/nj00_cdr4.html"
2."http://www.itmedia.co.jp/news/0212/18/nj00_cdr4_2.html"
3."http://www.itmedia.co.jp/news/0212/18/nj00_cdr4_3.html"

Regards !
 
tiefbassuebertr

tiefbassuebertr

Member
Joined 2005
tiefbassuebertragung.de
Thank you very much for the URL collection.

Regarded the MJ Magazine I have found a possibility to find a very wide range of various offers:

1) go to Yahoo!??????
2) fill in the keyword (term) "無線と実験" about "商品を検索する"
3) now klick on the button at left from blue written term "検索オプション"

Currently I get 14 overview pages and each pages 25 different MJ devices with a photo from the cover page in most cases (very interesting !!).

About this URL there are a comment to the the 1000 anniversary edition
http://blog.goo.ne.jp/bluesman55/e/0b9bd685d17e10ab13da9ef4dce6f6bc
http://book.asahi.com/news/TKY200605160380.html
and translate (with some loss)
http://translate.google.de/translat...TKY200605160380.html&sl=ja&tl=en&hl=&ie=UTF-8
here the 1. edition vs. 1000 edition:
http://www.phileweb.com/news/audio/image.php?id=6431&row=0

Do you know, how many special editions (or as you called "separate volume") are released at whole (like that one from post #4 and #5) ?

I have found this
http://www.hifido.co.jp/KW/G7004/J/0-10/C09-45810-25208-60/

independend of this - one site for friends of vintage Japan radios:
http://www.japanradiomuseum.jp/katasiki.html
 
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turnA_zpoint

turnA_zpoint

Member
Joined 2006
www2.plala.or.jp/puthoff/
Hi
>>Do you know, how many special editions (or as you called "separate volume") are released at whole (like that one from post #4 and #5) ?

I do not Know so much ,too.
I research google or yahoo ,me too.
The "special editions" is say " 別冊"
So fill in the keyword (term) "無線と実験" , "別冊"

Sample of result.
"http://www.hifido.co.jp/KW/G7003/J/0-10/C09-39958-45443-60/"

AND
The Japanese National Diet Library
"http://porta.ndl.go.jp/portal/dt?action=content&provider=JSPTabContainer"
>>the keyword (term) "無線と実験" ,


P.S
I also participated in the DIY amplifier contest of the the 1000 anniversary.
2006_MJ_Amp_Contest

Regards!
 
tiefbassuebertr

tiefbassuebertr

Member
Joined 2005
tiefbassuebertragung.de
Thank you again for this advice - about the additional keyword " 別冊" I find a lot of the special editions (with cover pic and the title "Stereo Technic").

I think, the topology about
2006_MJ_Amp_Contest
is basicly the same than that descripted about there:
YouTube - 60W MOS FET DC Power Amplifier
http://www.diyaudio.com/forums/solid-state/127230-intro-circuit-study.html

Very intersting. A challenge for me here it would be, to make a transition to a circlotron topology (CSPP = cross shunt push pull). If I have time, I will try it.

First advices therefore I have get about this thread:
http://www.diyaudio.com/forums/solid-state/146586-conversion-hiragas-le-monstre-circlotron.html
 
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turnA_zpoint

turnA_zpoint

Member
Joined 2006
www2.plala.or.jp/puthoff/
Hi !

> I think, the topology about
> 2006_MJ_Amp_Contest
> is basicly the same than that descripted about there:
> YouTube - 60W MOS FET DC Power Amplifier
> Intro a circuit of study..

Thank you, seeing my site and you tube

Well they basicaly same configuration that inverted and
complementary P-P, but the feedback architecture is different.

Especially
> YouTube - 60W MOS FET DC Power Amplifier
have 180dB at 1KHz openloop gain according to the simulation,
(However, though it is not a complete model)
and have stability,too.

The reason why I use inverted type,there isnot "the channel modulation effect" of FET (that is same effect "early effect" of transistor,
Even if using cascode , not enough.)

And not using the differential circuit,
the complementary circuit operate "differential" even if the
input signal and the feedbak signal become different
shapes of waves.
(differential circuit ,actually, is not to be operating...
under the above..)

Jean Hiraga's Le Monstre / Monster - DIY Class-A 8W Amplifier
Yes ,I know well it and think good .
It is non inverted and current feedback circuit.

Regards
 
tiefbassuebertr

tiefbassuebertr

Member
Joined 2005
tiefbassuebertragung.de
for better understanding I have create a simplified circuit of your amplifier topology (last of the collection from some other in the pdf attachement).

But I don't understanding in the moment your multiple NFB topology (perhaps I must try to create additional different sketching of the NFB resistor network). But I think, it is an special variation of an error correction topology.

This topology I have never seen before. The greatest similarity for me is to the electrocompaniet AW100 power amp circuit (see second attachement).

Do you know a commercial product, that uses similar topology?

Independent of this here the links about Yamaha's Hyperbolic Conversion Amplifier MX-10000:
http://www.diyaudio.com/forums/soli...lic-conversion-amplification-hca-circuit.html
 

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  • C ...-A-Electrocompaniet Ampliw.100 Sp.CKT.pdf
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turnA_zpoint

turnA_zpoint

Member
Joined 2006
www2.plala.or.jp/puthoff/
Very Very thank you for thinking my amp circuit.

"2006_MJ_Amp_Contest" is just variation of an error correction topology as you say.

Electrocompaniet Amplifire 100 is inverted trans-impedance amp.
I think this is not current feedback circuit maybe...
The feedback point ( summing point) of the current feed back circuit is to be low impedance.

One of the information about standard current feedback circuit.
"http://ebyanmo.web.fc2.com/music/2002_08_16_opamp/index.html"
fig3 is current feedback model.

I think "60W MOS FET DC Power Amplifier" is inverted current feedback circuit... So it can get wide range band with high Open Loop gain easyly.

The explanation of working this amp is bellow ,may I help you.
http://www2.plala.or.jp/puthoff/material/explanation_of_work_081030.pdf
http://www2.plala.or.jp/puthoff/material/EXP_MK2_V2.pdf

Regards!
 
tiefbassuebertr

tiefbassuebertr

Member
Joined 2005
tiefbassuebertragung.de
about follow URL there are listed many editions:
??????????????????????? (= http_soundpage.jugem_jp)
e. g.
????? 1968 | ???????????????????????

By recherche on the web about various "first solid state" amp devices from Victor (JVC)
I found this site, but unfortunately nothing else except this:
http://audio-heritage.jp/VICTOR/amp/mcp-200.html (Pre- Amp)
http://audio-heritage.jp/VICTOR/amp/mca-103.html (Integrated Amp)
http://audio-heritage.jp/VICTOR/amp/mca-103b.html
http://audio-heritage.jp/VICTOR/amp/mca-102.html
http://audio-heritage.jp/VICTOR/amp/mca-104.html
http://audio-heritage.jp/VICTOR/amp/ast-120t.html (Reveiver)
http://audio-heritage.jp/VICTOR/amp/ast-125t.html (Reveiver)
http://audio-heritage.jp/VICTOR/amp/mcm-200.html (Power Amp)
Obviously this devices was only sell in Japan
 
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