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18Sound

SPEAKER 18SOUND 18" 18NLW9601

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ALT189601WF08NA
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  • SPEAKER 18SOUND 18" 18NLW9601
  • SPEAKER 18SOUND 18" 18NLW9601
  • SPEAKER 18SOUND 18" 18NLW9601
  • SPEAKER 18SOUND 18" 18NLW9601
  • SPEAKER 18SOUND 18" 18NLW9601
Now: $180,350
Was: $257,642

Description

The 18NLW9601 is an extended low frequency 18 inch neodymium high performance transducer. It is the evolution of the industry standard 18NLW9600. The loudspeaker has been designed for use as a subwoofer component, in either a reflex, bandpass or horn loaded high SPL demanding applications. For optimum results recommended amplifier should be able to deliver 3600 Watt program power. At the heart of teh transducer stands a double silicon spider based on DSS technology let the 18NLW9601 being able to control the moving mass with high linearity, showing an exceptional stability of mechanical parameter values in the long term. The state-of-the-art 5,3" diameter ISV copper clad aluminum wire CCAW voice coil shows a inside-outside split winding, four layers design, enabling the 18NLW9601 to handle up to 3600W program power. Bl force factor, as well as all other electro-dynamic parameters, are linear within the working range. This, together with the exceptional high excursion behavior - 70mm before damage, ±14mm linear Xmax - makes the 18NLW9601 an extremely low distortion, highly dynamic transducer. The already low distortion and sound quality have been further improved by the aluminum demodulating ring (SDR technology), that flatten impedance and phase versus frequency. The 18NLW9601 has been developed after intense FEA and fluidodynamics simulation and testing, focusing on dissipating the heat generated by the powerful voice coil. Special attention was given to the optimization of air flow into the gap without introducing audible noise. A low-density foam diffractor placed into the vent hole acts as a cooling system, increasing the power handling capability and lowering the power compression figure. The carbon fiber reinforced, straight ribbed cone shows a proprietary resin treatment for extra pulp strength and water repellent properties. A special coating applied to both the top and back plates makes the transducer far more resistant to the corrosive effects of salts and oxidization.

Extended Speaker

  • 18" Neodymium chassis
  • Power: 1800 Watt AES
  • Impedance: 8 Ohm
  • Sensitivity: 97 dB SPL 1W/1M
  • Frequency range: 32 Hz - 2.5 kHz
  • XMax 14 mm
  • Qts 0.28
  • Fs 34 Hz
  • Weight: 12.8 kg

Further Information

Impedance 8 Ohms
Load Capacity 1800 W
Resonant frequency fS 39 Hz
Electrical Q QES 0.30
Mechanical Q QMS 5.70
Total Q factor QTS 0.28
Suspension equivalent air volume VAS 120 litres
DC resistance RE 4.7 Ω
Minimum impedance Zmin 6.1 Ω
Voice coil inductance LE 2.19 mH
Force factor B·l 31 T·m
Suspension mechanical resistance RMS 11 N·s/m
Suspension mechanical compliance CMS 66 µm/N
Moving mass MMD 227.7 g
Moving mass (including airload) MMS 255 g
Surface of the diaphragm SD 1130 cm²
Effective diaphragm diameter Ø 37.9 cm
Maximum linear excursion Xmax ± 14 mm
Excursion limit Xlim ± 35 mm
Displacement volume at Xmax VD 1582 cm³
Efficiency η₀ 2.32 %
Efficiency bandwidth product EBP 130
Overall diameter 462 mm
Baffle hole diameter 422 mm
Overall depth 236 mm
Flange thickness 26 mm
Net weight 12.8 kg
Diaphragm material Straight ribbed carbon fiber loaded cellulose
Surround material Triple Roll, Heavy Polycotton
Voice coil diameter 135 mm
Coil material Aluminum
Magnet Neodymium
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