7 + 7 Watt Stereo Amplifier STA7

Radford Electronics Ltd.; Bristol

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  • Année
  • 1960 ?
  • Catégorie
  • Amplificateur BF ou mélangeur BF
  • Radiomuseum.org ID
  • 360550

Cliquez sur la vignette du schéma pour le demander en tant que document gratuit.

 Spécifications techniques

  • No. de tubes
  • 6
  • Principe général
  • Amplification audio
  • Gammes d'ondes
  • - sans
  • Tension / type courant
  • Alimentation Courant Alternatif (CA) / 50 Hz, 210; 230; 240 Volt
  • Haut-parleur
  • - Ce modèle nécessite des HP externes
  • Matière
  • Boitier métallique, lampes visibles
  • De Radiomuseum.org
  • Modèle: 7 + 7 Watt Stereo Amplifier STA7 - Radford Electronics Ltd.;
  • Forme
  • Modèle de table générique
  • Remarques

  • The Radford STA7 is an extremely rare model in the Radford STA series of vacuum tube audio amplifiers. This 7 + 7 Watt stereo amplifier features a push-pull output configuration and utilises the following vacuum tubes:

    • 1x ECC83
    • 4x ECL82
    • 1x EZ81

    While detailed specifications for the STA7 are scarce due to its rarity, we can infer some additional information based on its design and the Radford amplifier lineage:

    1. Output Power: 7 watts per channel
    2. Circuit Design: Push-pull configuration
    3. Transformer Specifications: The original hand-written specifications for the STA7's output transformers still exist, indicating its authenticity as part of the Radford amplifier series

    The STA7 likely shares some characteristics with other Radford amplifiers of its era:

    • High-quality output transformers, a hallmark of Radford designs
    • Possibly a variation of the classic Philips/Mullard circuit used in other Radford amplifiers
    • Potentially lower plate voltage for the output tubes, contributing to a sweet, detailed sound, similar to the STA12

    Given its low power output and rarity, the STA7 may have been a specialised or limited production model within the Radford lineup. Its existence alongside more powerful models like the STA15 and STA25 suggests it may have been designed for specific applications or to meet market demands.

  • Schémathèque (1)
  • - - Manufacturers Literature
  • Auteur
  • Modèle crée par Gary Cowans. Voir les propositions de modification pour les contributeurs supplémentaires.

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