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  • LF Drivers

    21IPAL

    21 inches

    Subwoofer


    When used with the Powersoft IPAL power amp modules, the 21PAL can provide extreme output in a very small, dependable package.
    For more information, visit the Powersoft Website.

    Features


    5000 W continuous program power capacity
    153 mm (6 in) split winding aluminium voice coil
    37 - 1000 Hz response
    99 dB sensitivity
    Neodymium magnet allows a very high force factor and linear excursion
    Double silicone spider with optimized compliance
    80 mm peak-to-peak excursion before damage
    Ventilated voice coil gap for reduced power compression

    Specifications

    Nominal Diameter

    530 mm (21 in)

    Nominal Impedance

    1 Ω

    Minimum Impedance

    1.1 Ω

    Nominal Power Handling

    2500 W

    Continuous Power Handling

    5000 W

    Sensitivity

    99 dB

    Frequency Range

    37 - 1000 Hz

    Voice Coil Diameter

    153 mm (6 in)

    Winding Material

    Aluminium

    Former Material

    Glass Fibre

    Winding Depth

    48 mm (1.9 in)

    Magnetic Gap Depth

    18 mm (0.7 in)

    Flux Density

    1.35 T

    Woofer Cone Treatment

    TWP Waterproof Both Sides

    Parameters

    Fs

    37 Hz

    Re

    0.7 Ω

    Qes

    0.22

    Qms

    4.9

    Qts

    0.21

    Vas

    155 dm³ (5.47 ft³)

    Sd

    1680 cm² (260.4 sq²)

    η0

    3.2 %

    Xmax

    22 mm

    Xvar

    15 mm

    Mms

    487 g

    Bl

    19.1 Tm

    Le

    0.5 mH

    EBP

    168 Hz

    Design

    Surround Shape

    Triple Roll

    Cone Shape

    Radial

    Magnet Material

    Neodymium Inside Slug

    Spider

    Double Silicone

    Pole Design

    T-Pole

    Woofer Cone Treatment

    TWP Waterproof Both Sides

    Recommended Enclosure

    200 dm³ (7.06 ft³)

    Recommended Tuning

    40 Hz

    Mounting and Shipping Info

    Overall Diameter

    547 mm (21.5 in)

    Bolt Circle Diameter

    527 mm (20.7 in)

    Baffle Cutout Diameter

    508 mm (20 in)

    Depth

    269 mm (10.59 in)

    Flange and Gasket Thickness

    13 mm (0.51 in)

    Air Volume Occupied by Driver

    16 dm³ (0.56 ft³)

    Net Weight

    23 kg (50.71 lb)

    Shipping Units

    1 pcs

    Shipping Weight

    25.3 kg (55.78 lb)

    Shipping Box

    570x570x320 mm (22.44x22.44x12.60 in)

    Service Kit

    lf Recone Kit
    RCK21IPAL
    • Cone

    • Basket

    • Dust Cap

    • Wooterprof Treatment

    • Centering Shims

    • Heat Shrink Tube