U8212

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  • U8212
  • U8212
  • U8212
U8212

U8212

1. 900 W continuous program power capacity

2. Sensitivity: 97dB 1w/1m

3. 76mm(3") high temperature inside/outside CCAW voice coil

4. Paper cone made in U.S.A

5. FEA optimized magnet system design for low distortion and minimum power compression

6. M-roll polycotton edge with deep corrugations for extended Xmax

7. Ideal for high quality compact 2 or 3-way systems

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Technical Specifications
  • General Specifications
  • Nominal Diameter

    50 Hz
  • Rated Impedance

    8 ohm
  • Nominal Power handling1

    450 Watts
  • Program Power2

    900 Watts
  • Sensitivity(lw/lm)3

    96.5 dB
  • Frequency Range4

    49~3100 Hz
  • Minimum Impedance(Zmin)

    6.9 ohm
  • Voice Coil Diameter

    76/3 mm/inch
  • Voice Coil Material

    Copper
  • Former Material

    Glass Fiber
  • Voice Coil Winding Depth

    19 mm
  • Number of layers

    4(inside/outside)
  • Magnet gap depth

    10 mm
  • Basket

    Cast Aluminum
  • Flux Density

    1.1 T
  • Magnet Outer Diameter/Wgt

    190/75 mm/oz
  • Thiele-Small parameters
  • Resonance frequency

    Fs 50 Hz
  • DC resistance

    Re 5.3 ohm
  • Mechanical factor

    Qms 14.4
  • Electrical factor

    Qes 0.34
  • Total factor

    Qts 0.33
  • Mechanical compliance

    Cms 0.15 m/N
  • Mechanical resistance of suspension losses

    Rms 1.5 mech-ohm
  • Effective Moving Mass

    Mms 69 g
  • Half-space efficiency

    Eff 2.14 %
  • BL Factor

    BL 18.4 T.m
  • Equivalent Cas air load

    Vas 60 liters
  • Effective piston area

    Sd 0.0543 m^2
  • Max. linear excursion6

    Xmax 7 mm
  • Voice coil inductance

    Le1K 1.1 mH
  • Efficiency Bandwidth Product

    EBP 147
  • Mounting Information
  • Overall Diameter

    312 mm
  • Bolt Circle Diameter

    316 mm
  • Bolt Hole Diameter

    6.5 mm
  • Baffle Cutout Diameter

    383 mm
  • Overall Depth

    145 mm
  • Net Weight

    7.4 kg
  • Shipping Weight

    8.1 kg
  • Shipping Box

    345x345x180 mm
Technical Specifications
  • LF General Specifications
  • Nominal Diameter

  • Rated Impedance

  • Nominal Power handling1

  • Program Power2

  • Sensitivity(lw/lm)3

  • Frequency Range4

  • Voice Coil Diameter

  • Voice Coil Material

  • Voice Coil Winding Depth

  • Number of layers

  • Magnet Outer Diameter/Wgt

  • HF General Specifications
  • Throat Diameter

  • Rated Impedance

  • Power handling(2k~18kHz)

        Nominal2

  •     Continuous Porgram3

  • Sensitivity3(lw/lm,on axis)

  • Frequency Range4

  • Voice Coil Diameter

  • Voice Coil Material

  • Diaphragm Material

  • Magnet Material

  • LF Thiele-small Parameters
  • Resonance frequency

    Fs
  • DC resistance

    Re
  • Mechanical factor

    Qms
  • Electrical factor

    Qes
  • Total factor

    Qts
  • Mechanical compliance

    Cms
  • Mechanical resistance of suspension losses

    Rms
  • Effective Moving Mass

    Mms
  • Half-space efficiency

    Eff
  • BL Factor

    BL
  • Equivalent Cas air load

    Vas
  • Effective piston area

    Sd
  • Max. linear excursion5

    Xmax
  • Voice coil inductance

    Le1K
  • Efficiency Bandwidth Product

    EBP
  • Mounting Information
  • Overall Diameter

  • Bolt Circle Diameter

  • Bolt Hole Diameter

  • Baffle Cutout Diameter

  • Overall Depth

  • Net Weight

  • Shipping Weight

  • Shipping Box

Technical Specifications
  • General Specifications
  • Throat Diameter

    mm/inch
  • Rated Impedance

    ohm
  • Power handling

        Nominal2

  •     Continuous Porgram3

    Watts
  • Sensitivity4(1w/1m,on axis,on horn)

  • Frequency Range

    Hz
  • Minimum Impedance(Zmin)

    ohm
  • Voice Coil Diameter

    mm/inch
  • Voice Coil Material

  • Voice Coil Former

  • Phase Plug Material

  • Diaphragm Material

  • Flux Density

    T
  • Magnet Material

    kg
  • Mounting Information
  • Overall Diameter

    mm
  • Overall Depth

    mm
  • Net Weight

    mm
  • mounting

Curves
Frequency response measured in a closed enclosure of 600L in an anechoic chamber


Impedance and phase curves measured I free air

Laser displacement in dBmeter

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