18 -sound HD-125 HF Compression Driver High Frequency Driver

Beschrijving

Key features

• • 1 inch exit throat
  • 109 dB SPL 1W / 1m average sensitivity
  • 25,4 mm (1 in) edgewound aluminum voice coil
  • 50 Watt program power handling
  • Low weight, easy mounting and handling structure
  • Usable in two way or multiway systems

Description

The HD125 1 inch exit HF unit has been designed as the natural
evolution of the industry standard HD120 compression driver. It
delivers an unmatched combination of extended linear frequency response
and very high efficiency.
The
HD125 diaphragm assembly is made in proprietary treated polyethylene
material. This design maintains the minimum resonance frequency point
value at 1600 Hz, extending the frequency response in the mid region
when compared to HD120 compression driver.
The design of diaphragm
and its surround in polyester material allow a best movement and stress
control; the special radial ribs increase stiffness avoiding
uncontrolled vibration modes in the usable frequency range.
An
edge-wound aluminum voice coil, wounded on proprietary treated Nomex,
completes diaphragm assembly. Thanks to its physical properties, the
voice coil former shows 30% higher value of tensile elongation at
working operative temperature (200?C) when compared to Kapton. This
plus is capable to keep properly energy transfer control to the dome in
real working conditions. Moreover, this particular former material is
suitable to work also in higher moisture contents environments.
The
polypropylene phase plug is the result of a meticulous design exercise.
Its shape assures the correct acoustic impedance of the radiating dome,
reducing distortion levels across a very wide frequency range. At the
end, it results in a smooth coherent wavefront in the horn entrance,
high thermal stability and manufacturing consistency.
The HD125 compact size and lightweight ceramic magnet assembly has been designed to obtain 16 KGauss in the gap.