• Country
• Netherlands

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

• Year
• 1971

• Category
• Loudspeaker, headphone or earphone

• Radiomuseum.org ID
• 312272

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)

• Material
• Metal case

• from Radiomuseum.org
• Model: 2-1/2 inch Round Standard Loudspeaker AD2070 /Z4 /Z8 /Z15 /Z25 - Philips; Eindhoven tubes

• Dimensions (WHD)
• 64 x 64 x 19.8 mm / 2.5 x 2.5 x 0.8 inch

• Notes

• Philips Round Standard Loudspeaker type AD2070 /Z

  Available versions:

  • /Z4:    Z=4 Ω
  • /Z8:    Z=8 Ω
  • /Z15:  Z=15 Ω
  • /Z25:  Z=25 Ω

• Net weight (2.2 lb = 1 kg)
• 0.064 kg / 0 lb 2.3 oz (0.141 lb)

• Mentioned in
• -- Original-techn. papers. (Miniwatt Copresa "Altavoces" 1973)

• Author
• Model page created by Miguel Bravo-Cos. See "Data change" for further contributors.

• Other Models

• Here you find 5242 models, 4383 with images and 3445 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Philips; Eindhoven (tubes international!); Miniwatt