Eighteensound 15NCX750H 15inch Coaxial Lautsprecher 8 Ohm

Eighteensound 15NCX750H 15inch Coaxial Lautsprecher 8 Ohm

ES15NCX750H

• 97 dB LF / 109 dB HF SPL 1W/1m average sensitivity
• Single magnet neodymium motor
• 800W LF - 240W HF maximum program power handling
• 75 mm (3”) Interleaved Sandwich LF Voice coil (ISV)
• Aluminum Demodulating Ring (SDR) for minimum LF distortion
• 60 mm (2.4”) HF pure Titanium diaphragm
• Edge-wound Aluminum ribbon HF voice coil (EWAL)
• HF copper sleeve for reduced distortion and higher output
• Smooth on/off axis 70° x 50° response
• Suitable for compact enclosures and stage monitors

The 15NCX750H is a 15" neodymium coaxial transducer designed for use in compact reflex enclosures and stage monitors as small as 40lt with a nominal dispersion of 70 X 50 degrees. The curvilinear profile LF cone provides smooth response within its intended frequency range thanks to its high damping pulp composition. The 75mm (3in) LF copper voice coil employs Interleaved Sandwich Voice coil (ISV) technology, in which a high strength former carries windings on both the outer and inner surfaces. This results in a balanced coil with a uniform distribution of mass and motive energy and an extremely linear motor assembly. The low distortion and sound quality are further improved by an aluminum demodulating ring (SDR technology) that flatten LF impedance and phase with constant power transfer. Equipped with a proprietary hybrid radial tangerine phase plug, the integrated HF compression driver has been designed to give a smooth, coherent wavefront at the horn entrance in all working frequency ranges with an high level of manufacturing consistency. The phase plug, with its short openings and high flare rate value, assures low distortion and remarkable improvements in mid-high frequency reproduction. A copper sleeve reduces inductance value above 10kHz, improving phase and impedance linearization. The 2.4" diameter HF diaphragm assembly uses a high strength, high temperature treated Nomex voice coil former joined directly to the titanium diaphragm on its upper bend edge, assuring extended frequency energy transfer. This improves linearity and shows unparalleled reliability when compared with a straight former joint. A specific HF exit profile design has been chosen in order to maximize the cone’s profile coupling. The high force neodymium single magnet structure makes the 15NCX750H a lightweight speaker for its performance class - only 5.1kg (11.25 lb). The XO15NCX dedicated passive crossover filter is provided, making this neo coaxial speaker a ready-to-use transducer system. Due to the widespread use of high power audio systems at outdoor events, the ability to perform in adverse weather conditions is an additional key feature of the 15NCX750H. This has been achieved using exclusive cone and magnet plate treatment processes which increase resistance against corrosion and make the cone water repellent.

Nominal Diameter	380 mm
Nominal Impedance	8 Ohm
Minimum Impedance LF	6,3 Ohm
Frequency Range	50 - 4700 Hz
Dispersion Angle1	70x50 °
Woofer Cone Treatment	Water repellent
Magnet Material	Neodymium
LF Sensitivity2	97,0 dB
LF Nominal Power Handling3	400 W
LF Continuous Power Handling4	800 W
LF Voice Coil Diameter	75 mm
LF Winding Material	- Copper -
HF Sensitivity5	109,0 dB
HF Nominal Power Handling6	120 W
HF Continuous Power Handling7	240 W
HF Voice Coil Diameter	60 mm
HF Winding Material	Edge wound Aluminum
Recommended Crossover8	1,2 kHz
Resonance Frequency	49 Hz
Re	5,4 Ohm
Qes	0,4
Qms	6,32
Qts	0,37
Vas	141,0 dm3
Sd	881,0 cm2
No	4,1 %
Xmax	5,5 mm
Mms	80,6 g
Bl	18,5 Txm
Le	0,66 mH
EBP	122 Hz
Overall Diameter	393 mm
Bolt Circle Diameter	371 mm
Baffle Cutout Diameter	360 mm
Depth	185 mm
Flange and Gasket Thickness	14 mm
Net Weight	5,3 kg
Shipping Weight	6,0 kg
Shipping Box	405 x 405 x 260 mm