REDCATT 181NPW - 4 Ohm

REDCATT 181NPW - 4 Ohm 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, large waterproof surround

Design Notes

The 181NPW is a high efficiency, (97 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 35mm. Power Handling At 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

• BC5 Diameter: 18 inch
• Rated Impedance: 8 Ohm

Power Handling

• AES Power: 1500 Watts
• Program Power: 3000 Watts

Voice Coil

• Diameter: 5,3 inch
• Winding wire : Copper
• Former: Glass Fiber
• Winding height: 32,8 mm

T/S Parameters

• Resonant frequency: 28Hz
• Re: 3.2ohm
• Qes: 0,25
• Qms: 15,8
• Qts: 0,25
• VAS: 167.7L
• Sd: 1225.4cm2
• Mms: 391.2g
• BL: 29.7
• Le: 1,76
• Sensivity: 94,8 dB

Design Details

• Surround material: Fabric
• Cone material: Paper
• Spider: Nomex
• Plate thickness: 15 mm
• Peak to peak linear cone displacement: 23,9 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: 13.9kg