About The Ex Series; Technology Behind The S-3Ex; Cst; Ceramic Graphite Diaphragm - Pioneer s-3ex Handbuch

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About the EX series

The EX series, incorporating the abundant technological know-how behind Pioneer's flagship TAD speaker series, was developed
with the goal of creating the ultimate speaker possible in its price range.
The design and production of the EX series result from an international effort that represents the finest in Pioneer's speaker technology.

Technology behind the S-3EX

CST

The core driver of the system is the Coherent Source Transducer
(CST), which draws on the technology used in TAD. The tweeter
diaphragm is mounted concentrically within the apex of the
midrange cone and provides a point source of sound from 400 Hz
to 100 kHz. The CST ensures a perfect spectral balance between
the direct and reflected sounds that arrive at the listener's ears,
providing a more consistent sound throughout the listening room
and improved imaging capability.
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En

Ceramic Graphite Diaphragm

The CST's tweeter features a ceramic graphite diaphragm that
provides top-level strength and dampening characteristics that
are practically unrivaled by any other available materials currently
used in high-end audio speaker systems. Ceramic graphite's
lightness and exceptional strength combine to create speakers
whose diaphragm resonance can be pushed far beyond their
audible range.
Velocity (m/s)
18 000
16 000
14 000
12 000
10 000
8 000
6 000
4 000
2 000
0
0.005 0.015
Inner Loss

Magnesium Alloy Diaphragm

The CST's midrange features a magnesium alloy diaphragm
whose characteristic lightness and high inner loss provide
excellent transience and minimal coloration of midrange sounds.
0.025