RedCatt 8FHWX4382 - 4ohm

REDCATT 81FHWX4382 - 4 Ohm Woofer

Key Features

    Good low frequency response
    Lightweight surround, stiff paper cone
    Affordable woofer

Design Notes

The 81FHW woofer was designed with smaller hi-fi subwoofers in mind. The woofer works well in vented enclosures or combined with a passive radiator. Optimized magnetic structure delivers good level of performance and balancing well performance vs cost. We have chosen lightweight foam surround in this design. Our extensive development and testing of this material yielded in custom formulation of the raw material we use for the surround and guaranties its long lasting performance.

Specifications
General Specs

    Nominal Diameter: 8 inch
    Rated Impedance: 4 Ohm

Power Handling

    AES Power: 100 Watts
    Program Power: 200 Watts

Voice Coil

    Diameter: 1,2 inch
    Winding wire : Copper
    Former: Aluminum
    Winding height: 15.3 mm

T/S Parameters

    Resonant frequency: 36Hz
    Re: 3.3ohm
    Qes: 0,38
    Qms: 4.53
    Qts: 0.35
    VAS: 34.3L
    Sd: 213.8cm2
    Mms: 36.59g
    BL: 8.6
    Le: 0.89mH
    Sensivity: 89 dB

Design Details

    Surround material: Foam
    Cone material: PP
    Spider: Nomex
    Plate thickness: 8 mm
    Peak to peak linear cone displacement: 16,8 mm
    Overall diameter: 209.5 mm
    Bolt circle diameter: 197 mm
    Baffle cutout dia: 184.5 mm
    Number of mounting holes: 8
    Depth (flange to rear): 86.5 mm
    Net weight: 1.5kg

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