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Acceptable sound is only achieved over a relatively small
ar ea due t o mismatched directivities and driver inter fer ence.
coplanar
pioneer cst technology
pioneer cst technology
coaxial
coaxial
Improves upon coplanar designs, with a larger but still
limited listening area by eliminating driver interference.
Matched directivity and elimination of driver interfer-
ence results in sound as realistic off-axis as on-center.
cst: coherent source transducer.
the concentric solution.
from a single point source, maximizing
image stability and dramatically
reducing interference.
Directivity is precisely controlled
at all frequencies, and direct and
reected sound arrives at the listener
with matched timbre—especially
important with in-ceiling speakers,
where unwanted reections compro-
mise clarity and impact.
Listeners enjoy a wider sweet spot
than with pivoting coplanar and
The CST employs a tweeter, con-
centrically mounted at the apex
of the bass/midrange driver cone
to maintain sonic coherence and
seamless linearity. This conguration
ensures that sound propagates as if
coaxial designs, while the CST’s
controlled dispersion increases
flexibility and installation options.
Uniform delivery of sound means that
even off-axis positions can promise
the excitement of a front-row seat.
The CST Uses Technology Developed From the TAD Reference One and EX Series Speakers.