【Feature】
Easy to try! Building a multi-grid power amplifier
●EL84 Push-pull hybrid power amplifier – Yasuo Iwamura (only output tubes used thanks to differential line driver IC, no capacitors in signal path)
●Two-power-supply system. Uses popular parts. 6CA7/EL34 Single-ended direct-coupled power amplifier – Susumu Soya
●Output 21W using domestic horizontal deflection output tubes with limited data. 12G-B3 Push-pull power amplifier – Hiroshi Ueno
●Output 11W with triode connection of horizontal deflection output tubes. 25E5 Push-pull power amplifier – Masaru Nagashima
【Building an Original Sound System】
●Battery-driven, 8Ω/136W super high power. 6P1-SCT4013DR & 396A-SCT4013DR Hybrid Power Amplifier – Akihiko Kaneda
●Audio Amplifier Design and Production Support using PC [Part 65] Building a multi-amplifier system (5) – Heisuke Ikeda
●Building an optimal system for modified units. Experiment on magnetizing Diatone P-610 [Final Part] Unit improvement and review of excitation power supply – Hiroshi Ueno
●Aiming for high-efficiency and high-quality sound system. Design and production of small speakers [Part 200] – Takahisa Ozawa
【Audio Technology】
●New York-Tokyo Audio Communication: Revolving Times No. 5. A Modern Approach to the Design of Ojas-kO-R2 and 1506 Multi-sectoral Horns, Large Format Horns – Devon Turnbull
●History of Audio Manufacturers seen through the evolution of hardware [Part 109] Luxman's 90-100 year journey (4) [Final Part] Semiconductor separate amplifier and clean power supply edition – Isao Shibasaki
●True characteristics known from actual measurement data. Measuring the characteristic curves of vacuum tubes (6) Dynamic coupling of DA42 – Masaki Kubo
●Revived from junk to practical use. Audio equipment repair diary
[Part 28] Maintenance of Nakamichi LX-3 and Teac V-2RX cassette decks and calibration of wow and flutter meter – Hideyuki Sakai
【MJ Zoom Up】
● Audio-Technica AT-MCD1 MC cartridge with stylus tip integrated diamond cantilever
● Denon DP-500BT Belt-drive analog player with built-in phono EQ/Bluetooth
● Tecnologia e Cuore DS-TC52B 2-way speaker system
● Epos ES-7N 2-way speaker system
● Syntec NDT-075100PS Balanced transmission isolation power transformer
【MJ Report】
● Tiglon TPL-3000L-WT LAN cable
● Waecho Acoustics JUST PUT CORNER Corner sound diffusion panel
New Product News
【Music / Acoustic Space / Pro Audio】
●Dream of a Hi-Fi Listening Room No. 656. Listening room achieving natural acoustic space with power supply and vibration countermeasures – Mr. Masashi Higuchi's residence, Sagamihara City, Kanagawa Prefecture
●Dream of a Hi-Fi Listening Room No. 657. A new-old-stock audio system learned from 1930s movie sound equipment – Oswald's Mill Audio Editorial Department
●Aiming to easily improve listening environment and sound quality. Recommendation for using smartphone sound measurement apps – Yutaka Masaki
●Production of high-performance, high-quality speakers through latest measurements and design [Part 40] Room acoustics improvement ① Understanding basic theory – Kohei Suzuki
【Audio & Software Guide】
●Future audio style. Astell&Kern's new DAP trends – Takashi Iwai
●Classical new release review – Naoya Hirabayashi, Ikuo Tsunoda, Chitake Inoue
●Jazz & Rock & Pops new release review – Masahiro Imai, Yoshinobu Morita, Mitsugu Kobayashi
●Classic masterpieces and great performances beyond audio (185) Becoming captivated by variable equalizers – Naoya Hirabayashi
●Visiting famous songs in the cinema forest No. 208/209 – Masashi Yanagisawa
【Readers' Page】
●8th MJ Audio Festival. 1200 audio fans gathered – Editorial Department
●Commemorating the completion of the "100 Years of Speaker Technology" series
●Interview with Mr. Tamon Saeki about the trajectory of speaker development – Editorial Department
●Exhibition of OJAS's latest system and Vacuum tube amplifier production workshop – Editorial Department
●MJ Book Guide "100 Years of Speaker Technology V Final Volume" The key to sound creation in speaker systems – Isao Shibasaki
●Information dissemination on MJ note
●Audio information
Released on 26/06/10
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MJ Wireless and Experiment July/Summer 2026 | Seibundo Shinkosha Co., Ltd. (seibundo-shinkosha.net)