Part of the Vertical Twin series inherited from Pioneer's TAD research, derived from the 1987 S-55T ("T" for Twin).
The SH-E10 is the medium model ; above was the SH-E100 floorstander and below the SH-E7 bookshelf.
Price-wise, none too affordable (296k¥, 130k¥ and 60k¥ per pair, respectively) but, sound-wise, very linear and powerful - TAD ancestry oblige.
Phase accuracy and realistic sound field were the main goals, with high sensitivity and dynamics
2x special ALCC 25cm cones made of mixed & blended fibers for low loss and high rigidity ; 14.300G double-magnet shielded circuit with symmetrical flux ; high-linearity "butterfly" damper.
Rear compression driver with adjacent b/r port ; titanium diaphragm and hogh-rigidity single diecast aluminium frame ; 10° horn flare (facing inward) for wide but controlled dispersion.
72L enclosure, floating network, internal bracing, second b/r back port (equivalently located).
Like most high-end JP speakers launched after the financial bubble bursting of 1990/91, this SH series sold very poorly despite excellent dispersions, dynamics, low THD and an affordable price...