JansZen Electrostatic Tweeter 1-30

JansZen (Brand), JansZen Laboratory, Inc., KLH Research Corp.; Mass,JansZen Audio.; Ohio

Datos
Foro
Imágenes
Colecciones

  • Año
  • 1955 ?
  • Categoría
  • Altavoz, cascos o auricular
  • Radiomuseum.org ID
  • 362342

Haga clic en la miniatura esquemática para solicitarlo como documento gratuito.

 Especificaciones técnicas

  • Principio principal
  • Amplificador de Audio
  • Gama de ondas
  • - no hay
  • Tensión de funcionamiento
  • Red: Corriente alterna (CA, Inglés = AC) / 60 Hz, 110 Volt
  • Altavoz
  • Altavoz electrostático (Altavoz a condensador)
  • Potencia de salida
  • 50 W (unknown quality)
  • Material
  • Madera
  • de Radiomuseum.org
  • Modelo: JansZen Electrostatic Tweeter 1-30 - JansZen Brand, JansZen
  • Forma
  • Sobremesa de cualquier forma, detalles no conocidos.
  • Ancho, altura, profundidad
  • 23 x 7.43 x 9 inch / 584 x 189 x 229 mm
  • Anotaciones

  • The Janszen electrostatic loudspeaker stands as a milestone in audio engineering, demonstrating that with proper materials and design, electrostatic principles could deliver the high-fidelity performance demanded by discerning listeners. Its influence can be seen in the later widespread adoption of electrostatic speakers in high-end audio.

    • Operating Principle: Operates on a push-pull electrostatic transducer principle, employing a lightweight diaphragm suspended between two fixed electrodes to achieve a linear driving force and significantly reduce distortion compared to older single-ended designs. Its high-frequency section comprises four electrostatic elements, often called "building-block elements" or "units," arranged horizontally, with each containing its own diaphragm and electrode structure.
    • Frequency Response: Designed to handle high frequencies with exceptional accuracy, the speaker covers a range from below 1,000 Hz to above 20,000 Hz, and in some models up to 30,000 Hz. This makes it ideal as a tweeter in two-way systems, taking over from dynamic woofers above 1,000 Hz.
    • Efficiency & Power Handling: The unit achieves high efficiency across its range, with a maximum acoustic power output of 0.5 watt for a four-element array. The manufacturer specifies 50 watts continuous and 100 watts peak input power.
    • Compatibility: The speaker operates from standard amplifier outputs (8 or 16 ohms) and includes its own bias supply, making it compatible with conventional hi-fi amplifiers without special modifications.

    Design Innovations

    • Membrane Technology: The diaphragm is extremely light, functioning almost as an "imaginary boundary" in air, resulting in a very smooth axial pressure response and minimal coloration.
    • Push-Pull Configuration: By placing the diaphragm equidistant between two fixed plates, the design achieves near-perfect linearity and minimizes distortion, especially at high output levels and lower frequencies within its range.
    • Built-in High-Pass Filter: The tweeter version includes a 10 dB/octave high-pass filter, simplifying integration into speaker systems.

    Performance and Listening Impressions

    • Sound Quality: Reviewers noted the Janszen tweeter as “possibly the finest tweeter available at any price,” praising its smoothness, lack of coloration, and ability to render high frequencies with exceptional clarity and definition. The sound is described as crisp and detailed, with excellent distribution and minimal distortion.
    • System Integration: The speaker’s neutrality means it pairs best with woofers that have similarly smooth, low-distortion characteristics. Mismatched woofers may result in a disjointed sound, particularly near the crossover region.

    Practical Considerations

    • Installation: The unit requires careful setup, particularly in balancing and phasing with the woofer. It is not recommended as a simple add-on to existing systems without attention to these details.
    • Power Supply: The built-in polarizing supply requires AC power. 
    • Pricing: The Janszen tweeter was positioned at the higher end of the market, reflecting its advanced technology and performance. 1955; $161 (utility), $179 (birch), $184 (mahogany).

    See Model 65.

  • Precio durante el primer año
  • 161.00 USD
  • Mencionado en
  • -- Original-techn. papers. (Journal of the Audio Engineering Society, Vol 3, No 2, April 1955)
  • Documentación / Esquemas (1)
  • -- Original prospect or advert (High-Fidelity Nov 1955, Pages 95 & 96)
  Journal of the Audio Engineering Society, April 1955, P87-90. 3795 KB
  • Documentos sobre este modelo
  • Autor
  • Modelo creado por Gary Cowans. Ver en "Modificar Ficha" los participantes posteriores.

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