The Loudspeakers - T+A CRITERION Serie Betriebsanleitung

The bass driver
The bass units must be capable of processing very high
power levels, whilst always working cleanly, without
distortion.
For this reason they feature solid aluminium cones and
cooled suspension systems, which are also capable of
carrying out extremely long travels in a linear manner.
The mid-range driver
In many respects the mid-range reproduction of a loud-
speaker is of crucial significance. The human ear is at its
most sensitive in this frequency range, and carries out
the tasks of direction-finding and range assessment in
this area. The ear is also most efficient at perceiving
subtle sound colours and (dis-) colorations at mid-range
frequencies. For this reason we have invested particular
effort in developing a mid-range unit of truly outstanding
quality for the TCI series.
This new drive unit is capable of reproducing the entire
tonal range between 250 Hz and 2500 Hz whilst remain-
ing extremely linear and homogenous in character. This
is due to the extremely stiff but light-weight saturated
fibre cone in conjunction with a low-profile channel with
very high damping action.
The radiation characteristics of this mid-range unit are
outstanding, due to the specially shaped speaker cone
and the accurately calculated, finely tuned phase plug.
The newly developed low-profile surround is made of a
hard rubber compound with excellent damping charac-
teristics, which eliminates resonances and effectively
prevents reflections in the cone which could cause
coloration of the sound.

The loudspeakers

Since the treble and bass units in the TCI series have
superb peak handling properties, the new mid-range unit
also had to be able to perform much better than any
previous driver. The gigantic 120 mm Ø magnet system
and a 40 mm Ø voice coil consisting of four layers of
titanium form an impressively powerful combination, and
are mounted in a low-resonance cast magnesium cradle.
This driver and its carefully designed mid-range housing
(with non-parallel walls for low resonance) is capable of
handling peak signals in a way which is usually the
reserve of the PA arena.
The overall result is that the mid-range system of the TCI
series sounds very natural, free and melodious, but also
has enormous dynamic reserves.
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