18" | 181NPW
Neodymium Woofer
Key features:
- 5.3” diameter voice coil, high power handling
- Improved coil and magnet air-ventilation system, high temp. Capable voice coil winding
- Carbon fiber reinforced paper cone, triple silicone spider
Design notes:
- The 181NPW is a high efficiency, (95 dB 1watt / 1 meter) 18-inch woofer with incredibly linear frequency response characteristics, extreme high power handling capability while generating low harmonic distortion artifacts. The 181NPW uses a lightweight carbon fiber loaded cone assembly along with a high excursion triple roll constant
- geometry surround.This combination provides remarkable strength, high efficiency and a peak to peak maximum excursion of 30.5mm. Power HandlingAt the core of the 181NPW is it’s voice coil technology featuring a composite Polyimide former material capable of withstanding peak temperatures in excess of 350C, well
- beyond the thermal requirements of modern professional audio systems. The 181NPW delivers incredible performance. REDCATT has implemented a triple layer/silicone spider design to ensure long term shape memory, consistency and diminish anomalies associated with spider deterioration.
Specifications:
General specs Nominal Diameter: 18 in. Rated Impedance: 4 Ohm Power handling AES Power: 1,500 Watts Program Power: 3,000 Watts Voice Coil Diameter: 5.3 in. Winding wire: Copper Former: kapton Winding height: 32.8 mm T/S Parameters Resonant frequency: 28 Hz Re: 3.2 ohm Qes: 0.25 Qms: 15.8 Qts: 0.25 Vas: 167.7 liters Sd: 1,225.4 cm2 Mms: 391.2 grams Bl: 29.7 Le: 1.76 mH Sensitivity: 94.8 dB Design details Surround Material: Fabric Cone material: Paper Spider: Nomex Plate thickness: 15 mm Peak to peak linear cone Displacement n/a mm Overall diameter: 468 mm Bolt circle diameter: 442 mm Baffle cutout dia.: 426 mm Number of mounting holes: 8 Depth (flange to rear): 210 mm Net weight: 13.9 kg -
Ordering codes: Recone kits: Download: Spec download 2D drawing 3D model
Frequency response & lmpedance
2D drawing
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