5
TAD-R1TX
English
CST
The heart of the system is the Coherent Source Transducer
(CST), shown in Figure 2. The tweeter diaphragm is mounted
concentrically within the apex of the midrange cone and provides
a point source ofsound from 250 Hz to 100 kHz. It is time
coherent, due to the shallow midrange-cone profile made possible
by the superior strength of beryllium, and produces a superbly-
controlled radiation pattern. 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.
Figure 2. The TAD Reference One’s Coherent
Source Transducer
TECHNOLOGY
Beryllium Diaphragms
Each TAD Reference One loudspeaker features proprietary
beryllium-manufacturing technology for the midrange and
tweeter diaphragms. The lightest and most rigid metal available
for diaphragms, beryllium performs with strength and damping
characteristics unmatched by any of the materials currently
used in high-end audio loudspeaker manufacturing, as shown in
Figure 1. Beryllium’s combination of light weight and exceptional
strength enables diaphragm resonance to be pushed far beyond
the operating band of its drive units. This produces near-perfect
piston behavior in the speakers, resulting in cleaner sound and
greater accuracy of reproduction.
18 000
Velocity (m/s)
Inner Loss
（tan δ）
16 000
14 000
12 000
10 000
8 000
6 000
4 000
2 000
0.005
0.015
0.025
0
Aluminum
Beryllium
Boron Alloy
Ceramic Carbon
Ceramic Graphite
Paper
Titanium
Figure 1. Velocity properties of
beryllium and other materials.
Summary of Contents for Reference One
Page 1: ...TAD Reference One...
