Baby Grand 4-valve

CAV: C.A. Vandervell & Co. Ltd.; London

Data
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  • Year
  • 1927/1928
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 76779
    • alternative name: C.A. Vandervell & Co. Ltd.; Acton || C.A.Vandervell & Co.

Click on the schematic thumbnail to request the schematic as a free document.

 Technical Specifications

  • Number of Tubes
  • 4
  • Main principle
  • TRF with regeneration; ZF/IF 2 kHz; 2 AF stage(s)
  • Tuned circuits
  • 2 AM circuit(s)
  • Wave bands
  • Broadcast (MW) and Long Wave.
  • Power type and voltage
  • Storage and/or dry batteries
  • Loudspeaker
  • Magnetic loudspeaker (reed) generic.
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: Baby Grand 4-valve - CAV: C.A. Vandervell & Co. Ltd
  • Shape
  • Console with any shape - in general
  • Dimensions (WHD)
  • 540 x 790 x 530 mm / 21.3 x 31.1 x 20.9 inch
  • Notes
  • Mahogany or oak cabinet; CAV "Musicola" cone loudspeaker built into the cabinet.
  • External source of data
  • Jeremy Stevens
  • Author
  • Model page created by Ernst Erb. See "Data change" for further contributors.

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Forum contributions about this model: CAV: C.A. Vandervell: Baby Grand 4-valve

Threads: 1 | Posts: 1

Some information from Jeremy Stevens:

The loudspeaker is amazing. It appears to be a balanced armature type (1500 Ohm) and has an adjustment knob on the rear. (I have another 1928 set, a National Portable which is similar) The cone is rigid paper and supported in four rubber grommets at 90 degrees on the front of case.

Most of the circumference of the cone is free-standing. Despite its crudity the set sounds quite good.

Interestingly, the speaker in the Rotax set is a horn type, driven by a transformer.

The set appears in the Wireless World Buyers' Guide 1927-28 and is priced at £32 10s. That was three times the price of a normal set. The set's dimensions correspond to those in the guide apart from the depth which is quoted as 20". The set actually measures 31" high (79cm) 29" wide (54cm) and 21" deep (53cm).

Ernst Erb, 04.Mar.05

Weitere Posts (1) zu diesem Thema.