I am looking for a test report in this magazine concerning Audio Technica phono preamps and the moving coil cartridges AT-ART7 so as AT-ART9.
Member
Joined 2006
If anyone happens to visit Tokyo and has some free time...the Japanese National Diet Library carries all the old issues of the MJ magazine (1920 to mid 1984 in digital format, 1984 to present in hard copies) which you can look at and make print outs.
Was there a couple of days ago to look through transistor amps designs and development over time (something I wanted to do all along 🙂 )..So advanced for diy then.. particularly so much innovation happening in the late 70s and 80s...
For example...here is something from a late 1970s article....ever seen a push pull ................. power regulator? (regulator of either a series or a shunt type is not really complete..) 😀
Edit:
oh...just noticed Apex had something similar:
http://www.diyaudio.com/forums/power-supplies/164365-class-preamp-psu.html
Was there a couple of days ago to look through transistor amps designs and development over time (something I wanted to do all along 🙂 )..So advanced for diy then.. particularly so much innovation happening in the late 70s and 80s...
For example...here is something from a late 1970s article....ever seen a push pull ................. power regulator? (regulator of either a series or a shunt type is not really complete..) 😀
Edit:
oh...just noticed Apex had something similar:
http://www.diyaudio.com/forums/power-supplies/164365-class-preamp-psu.html
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Member
Joined 2006
You can search peaces of indexes on the Japanese national library website.
"http://dl.ndl.go.jp/search/detail?detailSearchTypeNo=T1"
check "Available only at the NDL". 無線と実験 is not available to preview on the web , but you can search indexes.
I tried to search Linn , LINN , "リン" (which is linn in japanese ) and LP12 but do not hit anything though in my experience this search engine is not so intelligent.
"http://dl.ndl.go.jp/search/detail?detailSearchTypeNo=T1"
check "Available only at the NDL". 無線と実験 is not available to preview on the web , but you can search indexes.
I tried to search Linn , LINN , "リン" (which is linn in japanese ) and LP12 but do not hit anything though in my experience this search engine is not so intelligent.
To give a few more options to read MJ:
https://www.pdfmagaz.in/search/MJ - download - do not have any experience with them.
http://green.zero.jp/kirifuri1993/radio-boy/index.html#gsc.tab=0 - download - practically all tubes related.
https://www.goodreads.com/search?q=MJ+Radio+and+Experiments - do not have any experience with them.
They have presence at FB and Twitter:
https://www.facebook.com/people/MJ-無線と実験/100064007618354/
https://twitter.com/audio_tech_mj
https://www.pdfmagaz.in/search/MJ - download - do not have any experience with them.
http://green.zero.jp/kirifuri1993/radio-boy/index.html#gsc.tab=0 - download - practically all tubes related.
https://www.goodreads.com/search?q=MJ+Radio+and+Experiments - do not have any experience with them.
They have presence at FB and Twitter:
https://www.facebook.com/people/MJ-無線と実験/100064007618354/
https://twitter.com/audio_tech_mj