Loudspeaker System JR149

JR Loudspeakers Ltd.; St. Albans

Daten
Forum
Bilder
Sammlungen

  • Jahr
  • 1977
  • Kategorie
  • Lautsprecher, Kopfhörer oder Ohrhörer
  • Radiomuseum.org ID
  • 311026

 Technische Daten

  • Wellenbereiche
  • - ohne
  • Betriebsart / Volt
  • Keine Stromversorgung
  • Lautsprecher
  • 2 Lautsprecher
  • Material
  • Diverses Material
  • von Radiomuseum.org
  • Modell: Loudspeaker System JR149 - JR Loudspeakers Ltd.; St.
  • Form
  • Regalgerät wie HiFi-Komponente für Bücherwand.
  • Bemerkung

  • 2 way hi-fi loudspeakers based on the BBC LS3/5A monitor loadspeakers, using the same drive units but housed in a heavy gauge aluminium cylinder with wooden end caps. There is a bolt through from top to bottom to brace the enclosure and make the wooden ends slightly concave, thus eliminating flat panels. The wooden ends are available in teak, walnut, rosewood, yew or aluminium, with red, green or brown inlaid rosewood. The cylinder is covered in black Declon foam. Optional wall brackets.

    Specification
    Frequency range: overall 40Hz- 40kHz.
    Frequency response: on-axis and up to 30° off-axis ±3dB 70Hz-20kHz, ±4dB 55Hz-20kHz.
    Power handling capacity: 60 watts programme. Suitable for 20-100 watt amplifiers.
    Sensitivity: 11V at 500Hz for 90dB SPL at 1 metre.
    Impedance: Suitable for outputs of 4 to 16 ohms.
    Crossover frequency: 3kHz.
    Overall dimensions: 9in diameter (23cm) x 14⅝in high (37cm).
    Weight: 12lb (5.5kg).
    Bass unit: 5⅛in (13cm).
    Treble unit: ¾ in (2cm) dome.

  • Literaturnachweis
  • - - Manufacturers Literature (JR JR149 Brochure)
  • Autor
  • Modellseite von Howard Craven angelegt. Siehe bei "Änderungsvorschlag" für weitere Mitarbeit.

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