|My Audio Life
|| I became interested in
audio products when I was a middle school student.
Speaker craft became my hobby in 1990. First craft work was simple bass reflex speaker using FE166Sigma driver by Fostex. I was surprised at the performance of full range system at that time. I gave up commercial speaker system since then and began seeking possibility of speaker crafts especially with full range drivers.
My reference textbooks were written by Tetsuo Nagaoka. I bought other books, but they did not interest me at all. My real reference books are engineering, mathematics and science textbooks. Speaker craft guidebooks are almost nothing for me.
I tried multiple degree of freedom system with quadrapole chamber aligned in series cavity resonator in 2006. It was absolutely failed ssystem, and also I made serous calculation mistake. I developed MCAP-CR in 2007 based on above experience.
I am not good at electricity, so I focus on mechanical part of loudspeaker design.
|Loudspeaker system|| Analyzing loudspeaker
system is physics itself. I am disappointed at current loudspeaker
development in this industry. I often see meaningless theories in this
industry. Users should not be cheated by fake theories. Why don't you
come and join me to develop loudspeaker system based on science and
|Favorite Music|| I prefer classical musics.
Favorite composers are Handel, Haydn, Gounod, Glinka, Shostakovitch,
and so on.
I prefer opera and want to visit Europe every year to enjoy opera music. I wish I could live in Europe.
I do not prefer jazz or popular musics. They do not interest me from audio aspect.
|Current Reference System|| I am using following
There was no other reason why I chose above than reasonable prices.
My father in law left expensive audio components like Europhon by Siemens, EMT927, D730 by Studer, Tube amplifier by Kitao Itoh. I do not hate them, but my applications interest me much more.
|Speaker Drivers|| I use any manufacturer's
products if available. My favorite is Nf5 Ex by Feastrex,
||Message to Readers:
I am just an engineer. I carefully check my equations and theories in these pages, but I may have some mistaken, though I have Master of Science Degree in Mechanical Engineering.
Your report concerning my errors, mistakes and theoretical failures is very much appreciated.
Please contact me at firstname.lastname@example.org .