Eighteen Sound 12NCX750-8 — 12" Neodymium Coaxial Transducer
The Eighteen Sound 12NCX750-8 is a professional 12" coaxial speaker with integrated LF woofer and HF driver. It is designed for compact reflex cabinets, stage monitors and installations where broadband response and high SPL are required. The design with 75 mm LF voice coil, 60 mm HF voice coil and common neodymium motor provides low weight, high efficiency and reliable operation even under continuous load. The coaxial design provides point source character and even dispersion.
Technical data
- Size: 12" (310 mm outer diameter, 288 mm recessed diameter, 145 mm depth)
- Impedance: 8 ohms
- Sensitivity: 97 dB (LF), 107 dB (HF)
- Rated power: LF 400 W AES / 800 W program, HF 140 W AES / 240 W program
- Frequency range: 60–20000 Hz
- Voice coil LF: 75 mm aluminum ISV
- Voice coil HF: 60 mm EWAL aluminum ribbon wire
- Magnet: Neodymium (split motor for LF + HF)
- Beam angle: 80° conical
- Weight: ~6.5 kg
Thiele/Small parameters (LF)
Fs: 58 Hz
Qts: 0.29
Qes: 0.31
Qms: 6.4
Vase: 65 L
Sd: 531 cm²
Weight: 48g
BL: 17.5 T m
Xmax: ±5.5 mm
Efficiency: 3.4 %
Recommended use
- Compact reflex cabinets (40–60 L, tuned to approx. 55–65 Hz)
- Stage monitors and wideband PA systems
- Crossover guidelines: approx. 1 kHz, 12 dB/octave
- Installations where coaxial point source and low weight are preferred
Item no.
- Manufacturer: Eighteen Sound
- Model: 12NCX750-8
- Category: Coaxial transducer
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