• Country
• Netherlands

• Manufacturer / Brand
• Philips; Eindhoven (tubes international!); Miniwatt

• Year
• 1964

• Category
• Loudspeaker, headphone or earphone

• Radiomuseum.org ID
• 192025

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

• Wave bands
• - without

• Power type and voltage
• No Power needed

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 12 inch = 30.5 cm

• Power out
• 20 W (unknown quality)

• Material
• Metal case

• from Radiomuseum.org
• Model: AD-5200M - Philips; Eindhoven tubes

• Shape
• Chassis only or for «building in»

• Dimensions (WHD)
• 320 x 0 x 0 mm / 12.6 x 0 x 0 inch

• Notes
• The additional cone acts as a speaker up to 10 kHz, this frequency than the small cone gradually replacing the large membrane, and the latter acts as a reflector for the high tone frequencies.
  Detail of this speaker is the high efficiency factor corresponding to 14% (normal range 4-6), the lower resonant frequency in air (45 Hz), and the particular impedance (for the time) 7-Ohm voice coil.
  
  Il cono supplementare agisce come diffusore fino a 10 kHz, oltre questa frequenza il piccolo cono sostituisce gradualmente la grande menbrana, e quest'ultima agisce come riflettore per le note alte.
  Particolare di questo altoparlante è l'elevato rendimento corrispondente al 14% (valore normale 4-6), la bassa frequenza di risonanza in aria (45 Hz), e la particolare impedenza (per l'epoca) della bobina mobile di 7 Ohm.

• Net weight (2.2 lb = 1 kg)
• 3.5 kg / 7 lb 11.3 oz (7.709 lb)

• Price in first year of sale
• 65,000.00 Lire

• Source of data
• - - Data from my own collection

• Author
• Model page created by Biagio Laureti. See "Data change" for further contributors.

• Other Models

• Here you find 5247 models, 4384 with images and 3450 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Philips; Eindhoven (tubes international!); Miniwatt