• Année
  • 1923 ?
  • Catégorie
  • Haut-parleur, casque ou écouteur
  • Radiomuseum.org ID
  • 186310

 Spécifications techniques

  • Gammes d'ondes
  • - sans
  • Tension / type courant
  • Pas d'alimentation nécessaire
  • Haut-parleur
  • Cornet ou pavillon
  • Matière
  • Boitier métallique
  • De Radiomuseum.org
  • Modèle: Thorola No. 4 - Winkler-Reichmann Co.; Chicago
  • Forme
  • Modèle de table vertical (pas forme catédrale)
  • Remarques
  • The Thorola loudspeaker No. 4 has a gooseneck horn.
  • Prix de mise sur le marché
  • 25.00 $
  • Source extérieure
  • ad QST September 1925, page 83.
  • Source
  • - - Manufacturers Literature
  • Schémathèque (1)
  • Radio Horn Speaker Encyclopedia, Floyd A. Paul, p. 74
  • Schémathèque (2)
  • Radio Broadcast, Jan. 1926, p. 349
  • Auteur
  • Modèle crée par Ernst Erb. Voir les propositions de modification pour les contributeurs supplémentaires.

 Collections | Musées | Littérature


Le modèle Thorola fait partie des collections des membres suivants.


Contributions du forum pour ce modèle: Winkler-Reichmann Co: Thorola No. 4

Discussions: 1 | Publications: 3

Hello to all. I am a novice trying to restore a Thorola Model 4 horn speaker that goes with my Thorola Model 55 radio and have two questions.

I need to rewind the wire on the coil that sits in the magnets in the base of the speaker. I have checked info in the museum and it seems these types of speakers are 1k, 2k, or even 4k ohms. What should the resistance be on this speaker?

Secondly, if I rewind the coil and the resistance is "low" can I add a resister to bring it up to the correct value? I'm planning on rewiring it with as much #28 wire as I can get on there. Or should I use #32 or #40?

It appeares that someone had taken this apart before because the inside of the base is a mess. The original wire on the coil had come unwound because the spool was broken so there was no way to measure the original resistance. The original wire is extremely fine.


Al Amato, 17.Aug.16

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