Dynaudio 21 W-54

Data

General

  • Manufacturer: Dynaudio
  • Model: 21 W-54
  • Type: Bass loudspeaker
  • Years of manufacture: 1980 - 1988
  • Made in: Denmark
  • Color: Black
  • Original price approx.: see technical data


Technical Data

  • Type: Cone (MSP Polyprop)
  • Diameter: 222 mm cone
  • Power handling: 220 W
  • Frequency response: 35 - 5'000 Hz
  • Sound pressure level: 92 dB / W / m
  • Cabinet: bass reflex
    • Reflector tube: 60/190mm (inner diameter / length)

Dynaudio 21 W-54-Prospekt-1980.jpg


Thiele-Small Parameters

  • Impedance (Zmax): 8Ohm
  • Power (Pe): 160W
  • diaphragm area (Sd): 220cm²
  • resonant frequency (Fs): 30Hz
  • DC resistance (Re): 5,6Ohm
  • Voice coil inductance (Le): 0.250mH
  • Mechanical Q-factor (Qms): 2.03
  • Electrical Q-factor (Qes): 0.356
  • Total Q factor (Qts): 0.303
  • Equivalent volume (Vas): 59.6L
  • Diaphragm displacement volume (Vd): 154cm³
  • drive factor (Bxl): 9.09Tm
  • total moving mass (Mmd):
  • effective moving mass (Mms): 27g
  • mechanical losses (Rms): 2,60kg/s
  • diaphragm stroke (Xmax/Xmech): 7,0mm
  • Efficency Bandwith Product (EBP):


Remarks


Pictures

  • Extract from brochure: Dynaudio 21 W-54


Reports

Links