12-20 Permaflex Spider
Rola Company (AUS) Pty. Ltd.; Melbourne
- Country
- Australia
- Manufacturer / Brand
- Rola Company (AUS) Pty. Ltd.; Melbourne
- Year
- 1939 ??
- Category
- Loudspeaker, headphone or earphone
- Radiomuseum.org ID
- 315858
- Wave bands
- - without
- Loudspeaker
- Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 12 inch = 30.5 cm
- Material
- Various materials
- from Radiomuseum.org
- Model: 12-20 [Permaflex Spider] - Rola Company AUS Pty. Ltd.;
- Notes
-
12" Permag loudspeaker.
Type No. 12-21 Overall Diameter 12⅛" Voicecoil Diameter 1" Voicecoil Impedance 2.3Ω Superseded by PM Type 12-O.
- Mentioned in
- - - Manufacturers Literature (Various Rola Loudspeaker Data guides.)
- Author
- Model page created by Martin Kent. See "Data change" for further contributors.
- Other Models
-
Here you find 194 models, 70 with images and 1 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from Rola Company (AUS) Pty. Ltd.; Melbourne