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.
Throat Diameter
25 mm (1.0 in)
Nominal Impedance
16 O
Minimum Impedance
10.7 O
Nominal Power Handling
25 W
Continuous Power Handling
50 W
Sensitivity
109.0 dB
Frequency Range
2.0 - 18.0 kHz
Recommended Crossover
2.5 kHz
Voice Coil Diameter
25 mm (1.0 in)
Winding Material
Copper
Diaphragm Material
Polyester
Flux Density
1.65 T
Magnet Material
Ferrite
Overall Diameter
87 mm (3.43 in)
Depth
46 mm (1.81 in)
Net Weight
0.8 kg (1.76 lb)
Shipping Weight
0.9 kg (1.98 lb)
Shipping Box
90x90x70 mm (3.54x3.54x2.76 in)
Netto Gewicht
0.8 kg
Empfindlichkeit
109.0 dB
Dauerbelastbarkeit
50 W
Throat Diameter
25 mm (1.0 in)
Flux Density
1.65 T
Diaphragm Material
Polyester
Versandkarton
90x90x70 mm (3.54x3.54x2.76 in)
Magnet
Ferrite
MInimale Impedanz
10.7 Ω
Versandgewicht
0.9 kg (1.98 lb)
Nominale Impedanz
16 Ω
Einbautiefe
46 mm (1.81 in)
Nominale Belastbarkeit
25 W
Außendurchmesser
87 mm (3.43 in)
Wicklung besteht aus
Copper
Recommended Crossover
2.5 kHz
Schwingspulendurchmesser
25 mm (1.0 in)
Frequenzbereich
2.0 - 18.0 kHz
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