LEAN AUDIO No.1 for PA Loudspeakers, Guitar Speakers, Bass Guitar Speakers & HI FI speakers

18 Sound 15NCX750 15" 1.4" High output neodymium coaxial speaker



Eigtheen Sound 15NCX750 15" 1.4"Coaxial speaker 8ohm
The 15NCX750 is a 15" neodymium coaxial transducer designed for use in compact reflex enclosures and stage monitors as small as 40lt

97 dB LF / 109 dB HF SPL 1W/1m average sensitivity
Single magnet neodymium motor
800W LF - 240W HF maximum program power handling
Smooth on/off axis response
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
Suitable for compact enclosures and stage monitors

LF General Specifications

Nominal Diameter
380 mm (15 in)
Rated Impedance 8 Ohm
AES Power
400 W
Program Power
800 W
Peak Power
1600 W
97 dB
Frequency Range
50 - 4700 Hz
Power Compression @-10dB
0.9 dB
Power Compression @-3dB
2.8 dB
Power Compression @Full Power
4.2 dB
Max Recomm. Frequency
1400 Hz
Recomm. Enclosure Volume
80 - 140 lt. (2.83 - 4.95 cuft)
Minimum Impedance
6.3 Ohm at 25°C
Max Peak To Peak Excursion
27 mm (1.06 in)
Voice Coil Diameter
75 mm (2,95 in)
Voice Coil winding material
Triple roll, Polycotton
Curvilinear, Water repellent, High damping pulp

Thiele Small Parameters

Fs 49 Hz
5,4 Ohm
0,0881 sq.mt. (136.56 sq.in.)
0,37 Vas 141 lt. (4.98 cuft)
80.6 gr. (0.18 lb)
Vas 141 lt. (4.98 cuft)
18.5 Tm
Linear Mathematical Xmax
± 5.5 mm (±0,22 in)
Le (1kHz)
0.66 mH
Ref. Efficiency 1W@1m (half space)
4.1 %

HF General Specifications

D.C. Resistance
6,1 Ohm
Continuous Power
120W above 1,1 kHz
Max. program power
240W above 1,1 kHz
107 dB
Frequency Range
0.9 ÷ 18 kHz
Min Xover Frequency
1.1 kHz
Voice Coil Diameter
60 mm (2.4 in)

Mounting Details

Overall diameter 393 mm (15,47 in)
N. of mounting holes and bolt
Mounting holes diameter
7,15 mm (0,28 in)
Bolt circle diameter
371 mm (14,61 in)
Front mount baffle cutout
ø 360 mm (14.17 in)
Rear mount baffle cutout
ø 354 mm (13.94 in)
Total depth
185 mm (7.28 in)
Flange and gasket thickness
14 mm (0,55 in)
Net weight
5.3 kg (11.68 lb)
Shipping weight
6 kg (13,23 lb)
Packaging Dimensions
6 kg (13,23 lb)

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 cones profile coupling.

The high force neodymium single magnet structure makes the 15NCX750 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.

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  • 4 Units in Stock