ALR Jordan Number 4

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  • Manufacturer: ALR
  • Model: Number 4
  • Year of manufacture: 1992-95
  • Made in: Essen (Germany)
  • Color: ash white, ash black, beech natural, mahogany, walnut, oak light, oak rustic, oak maron
  • Dimensions: 228 x 1080 (with base) x 281 mm (WxHxD) 23 x 107 x 27 (2nd generation)
  • Weight: 22,5 kg
  • Original price approx.: 3200DM

Technical data

  • Type: floorstanding speaker, 3-way, bass reflex
  • Chassis:
    • Woofer: 2x 17cm Vifa P17WJ. (1st generation); 2x 17cm Vifa M17WH-35 (2nd generation)
    • midrange driver: 1x 13cm Vifa P13MH-00-08 (1st generation); 1x 13cm Vifa M13AH-01 (2nd generation)
    • tweeter: 1x Vifa aluminium dome tweeter with special front plate (1st generation); 1x 26mm Vifa H26TG-08 (2nd generation)

power handling (nominal/music): 140/200Watt

  • Efficiency: 86,5dB, 1Watt, 1 Meter
  • Frequency response: 35 - 20,000 Hz
  • Crossover: 350Hz/3500Hz (1st generation, source Stereoplay); 500Hz/3400Hz, slope: acoustically 18/18 dB per octave
  • Impedance: 4 Ohm
  • Recommended amplifier power: 30 - 250 Watt

Special Features

  • 1 bass reflex tube in front, 1 bass reflex tube in the back (1st generation) or 2, another one for the midrange driver (2nd generation), spikes and acrylic glass bottom plate (probably only 2nd generation).

baffle black flocked, real wood veneer


There were 2 generations of this model:

  • Generation 1 with Vifa poly woofers and midrange drivers (13cm) and aluminium dome tweeter (This generation was optically identical also already produced under the company name ART, however, this model apparently had only a "singlewire" connection terminal).
  • Generation 2 with Vifa horn silk dome tweeter, Vifa paper/carbon fibre bass/midrange driver specially developed for ALR as well as Vifa metal midrange driver with phase plug.

Other models in the same series: