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Designed by man
MILLE
line components membranes were designed according to the most innovative FEM
softwares (FEM: Finished Elements Modelling) and tested through prototypes, measurements
and technical listening. This process permits to control every step of the project and to
constantly check its evolution.
ML 280 dome has a special profile, exclusively designed by
HERTZ
: its first section is
hemispheric, the top is hyperbolic. The relation of emitting diameter, membrane height and
surround profile ensures very low Fs without affecting dynamics at mid-high frequency. The
component dispersion is flat also at extreme off-axis response and at ultrasonic frequencies.
ML 1600 “V” CONE has a totally new,
HERTZ
proprietary exponential geometry. Its contact point
with mobile voice coil uses a very light paper support, which optimises mechanical coupling and
insures very high efficiency. This new geometry provides very flat off-axis response, up to so-far
unbelievable frequencies for a component with this diameter, no break-up phenomena and
optimal damping, for rich, accurate sound in the whole bandwidth.
Membrane profile
ML 280
Membrane profile
ML 1600
Created by nature
Cotton-injected paper fiber, natural resin imbued Tetolon
®
.
The materials used for ML 1600 midbass and ML 280 tweeter membranes are created by nature
and treated according to processes perfected in decades. In
HERTZ
laboratories, tradition
supports innovation.
For ML 1600 cone construction we realised, analysed and studied more than 35 materials,
different in terms of paper fibers composition and impregnating components. The mixture we
selected ensures good stiffness, damping and lightness. No other rigid fiber, composite material
sandwich or metal mould can provide such natural, accurate, dynamic sound.
The fiber we used for ML 280 membrane is a mixture of cotton and silk, in controlled
percentage; together with the natural resin impregnating treatment, it makes the component go
beyond the audible range, like all stiff dome components (metal, rigid fibers) but without
generating the troublesome resonances which characterise this type of technology. The
diaphragm can, thus, vibrate at very high frequencies without coloration and without affecting or
spoiling sound.
Technology
English