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    8m400f

    Features

    • 100,5 dB SPL 1W / 1m average sensitivity
    • 51 mm (2 in) Interleaved Sandwich Voice coil (ISV)
    • 250 Watt AES power handling
    • Improved heat dissipation via unique basket design
    • Copper ring to linearize impedance curve
    • Suitable for high quality midrange applications
    The 8M400 is a high power, high output, 200 mm (8 in) midrange for high level professional use.
    The excellent sound quality has been achieved as a result of extensive research on mid
    frequencies intelligibility. The 8M400 has been designed for use as a midrange in both horn and
    direct radiation, closer or reflex enclosures, as small as 3 lt. The curvilinear cone, made with a
    high damping wood pulp, has been designed to achieve the best possible linearity within its
    frequency range. The in-house developed cone treatment is a humidity repellent and also
    dampens the bell mode resonance significantly. The 51 mm (2 in) ISV aluminum voice coil
    assembly is wound on a strong fiberglas former to improve force transmission and power
    handling. ISV technology is based on a high strength fiberglas former with half the coil wound on
    the outside and half on the inside and bonded together using unique high temperature resin
    adhesives. The powerful magnet assembly assures high flux concentration. The force factor and
    power handling are at an optimum level. The direct contact between the finned basket and the
    magnetic structure significantly improves thermal connection and heat dissipation, further
    increasing power handling and lowering power compression. The copper shorting ring on the
    pole piece reduces inductance and improves transient response and phase control in the mid
    frequencies.

    Specifications

    Design

    Parameters

    Mounting and Shipping Info

    • Nominal Impedance8 Ω
    • Minimum Impedance6.5 Ω
    • Nominal Power Handling1250 W
    • Continuous Power Handling2320 W
    • Sensitivity3100.5 dB
    • Frequency Range200 - 9000 Hz
    • Voice Coil Diameter51 mm (2.01 in)
    • Surround ShapeTriple roll
    • Cone ShapeCurvilinear
    • Magnet MaterialFerrite
    • Recommended Enclosure6.0 dm3 (0.21 ft3)
    • Recommended Tuning100 Hz
    • Resonance Frequency89 Hz
    • Re5.1 Ω
    • Qes0.28
    • Qms4.03
    • Qts0.26
    • Vas13.7 dm3 (0.48 ft3)
    • Sd227.0 cm2 (35.19 in2)
    • Xmax3.0 mm
    • Mms16.9 g
    • Bl13.1 Txm
    • Le0.07 mH
    • EBP317 Hz
    • Overall Diameter210 mm (8.27 in)
    • Bolt Circle Diameter196 mm (7.74 in)
    • Baffle Cutout Diameter186.0 mm (7.32 in)
    • Depth106 mm (4.17 in)
    • Flange and Gasket Thickness15 mm (0.61 in)
    • Net Weight4.9 kg (10.8 lb)
    • Shipping Weight5.2 kg ( lb)
    • Shipping Box235x235x150 mm (9.25x9.25x5.91 in)
    • 2 hours test made with continuous pink noise signal within the range Fs-10Fs. Power calculated on rated nominal impedance. Loudspeaker in free air.
    • Power on Continuous Program is defined as 3 dB greater than the Nominal rating.
    • Applied RMS Voltage is set to 2.83 V for 8 ohms Nominal Impedance.