18 -sound EXD-125 High Frequency Driver (8 of 16ohm)


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De 120 wordt niet meer gemaakt, daarvoor is nu de XD-125 leverbaar.

Key features

    • 1 inch exit throat
    • 108 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
    • 90? x 60? coverage Constant directivity pattern
    • Unique Eighteen Sound elliptical shape



The XD125 has been designed for 2 way or 3 way systems. It will deliver
an unmatched combination of extended linear frequency response and very
high efficiency.
major advancement in XD125 compression driver consists in a new
innovative diaphragm assembly made in proprietary treated polyethylene
material. This design maintains the minimum resonance frequency point
value at 1600Hz, extending the frequency response in the mid region
when compared to previous compression driver model, the XD120.
design of diaphragm and surround in polyester material allows better
control in terms of movement and mechanical stress. 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. Proprietary
treated Nomex former, thanks to its physical properties, 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, Eighteen Sound voice coil proprietary Nomex
former is suitable to work also in environments with higher moisture
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 range
of frequency. Final result is a smooth coherent wavefront in the horn
entrance, high thermal stability and manufacturing consistency.
The compact and lightweight ceramic magnet assembly has been designed to obtain 16KGauss in the gap.
XD125 pressure die-cast polyurethane foam horn maintains constant
nominal 90? Horizontal x 60? Vertical pattern control, providing
consistent on-axis and off-axis frequency response from 2kHz to 16kHz
in the horizontal plane and from 2,5kHz to 16 kHz in the vertical
plane. Horn directivity is constant from 2,5kHz. Computer Aided Finite
Element Analysis and extensive testing were used to obtain the horn
contours. Horn is designed to be free of resonance and vibrations
assuring maximum strength.

Throat Diameter 25,4 mm (1 in)
Rated Impedance 8 ohm
DC Resistance 5,7 Ohm
Minimum Impedance 8 ohms 5000Hz
AES power (1) 25 W above 2,5 kHz
Program power (2) 50 W above 2,5 kHz
Sensitivity (1W@1m) (3) 109 dB
Frequency Range 2 kHz ? 18 kHz
Recomm. Xover Frequency 2500 Hz (12dB/oct slope)
Diaphragm Material Polyester
Voice Coil Diameter 25,4 mm (1 in)
Voice Coil Winding Material Edge-wound aluminum
Magnet Material Ferrite
Flux Density 1,65 T
BL Factor 3,5 N/A
Polarity Positive voltage on plus terminal gives positive pressure in the throat


Overall diameter 87 mm (3,4 in)
Mounting holes diameter 2 M5 at 180 degrees
Bolt circle diameter 76 mm (3 in)
Total depth 46 mm (1,8 in)
Net weight 0,8 Kg (1,77 lb)
Shipping weight 0,9 Kg (1,99 lb)
CardBoard Packaging dimensions 90x90x70 mm(3,5×3,5×2,8 in)



18 Sound:  voor zowel de zelfbouwer of als vervanger van speakers.

Het topmerk onder de luidsprekers.

Extra informatie

Gewicht 2.00 kg


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