"Periscope" is a speaker system which has a duct disguising as a column. This
is an invention and named by T.Nagaoka. The one who looked at this never knows
the exixtence of long duct, so he would be surprised at the wide range sound.

　　They may say this is kind of a tricky speaker.




　　Stereo;July,1995

　　"Stand play" is a system of which unit is replaced with european one .




Stereo ; July,1998

　 These units are from BBC monitor LS3/5.

　　Fei's brand presents one equipped with newest european unit.
　　
　　FB24 "Desk top periscope 10" December,1998


SEAS W11CY001＋T25-002




　Mr.Fei was astounded by beautiful sound of this system.This is
so called culture shock.

FB27 "Desk top Periscope 08 / 2 way" February,1999

AUDAX HT080GO＋MOREL MDT40




　　This has an european taste too, but not so good as Desk top periscope
10.

Mr.Fei originally built a full range type periscope FB26 "Desktop
Peri 08/full range".




I was lucky to get this enclosure, so I made a plan. This box
was formerly for FE83 but later for FE88ES. By this replacement
balance was a bit damaged.

FE103 was employed. Hole was enlarged a little. It looks good.

Color simulation

Body was coated with maple lacquer twice, and stand part was coated with
brown cashew lacquer twice.



　　foc1=200Hz, fd=90Hz

The sound of bass guitar is clearly played in popular music.FE103 has
clear high-mid and heavy duty mid-bass, and they sound in the music
balance.

Appendix

Tetsuo Nagaoka's FE167 Periscope

　　

fd=56Hz


index