• Year
  • 1960 ??
  • Category
  • Loudspeaker, headphone or earphone
  • Radiomuseum.org ID
  • 201197

 Technical Specifications

  • Number of Transistors
  • 4
  • Semiconductors
  • Main principle
  • Audio-Amplification; none
  • Wave bands
  • - without
  • Details
  • Loudspeaker + integr.Amplifier
  • Power type and voltage
  • Direct Current supply (DC) / 24; 48; 12 & 30 Volt
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 9.8 cm = 3.9 inch
  • Power out
  • 0.5 W (unknown quality)
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: 106A - Western Electric Company Inc.;
  • Shape
  • Tablemodel, with any shape - general.
  • Dimensions (WHD)
  • 5.5 x 6.3 x 4.6 inch / 140 x 160 x 117 mm
  • Notes
  • Screw-terminal board selects: power supply voltage (24VDC (0.130 amp), 48VDC (0.088 amp) or 12 with 30 VDC, input and output impedances (1.5, 600 or 2400 ohm), internal (3.2 ohm) or external speaker, enable/disable/remote (10K ohm) volume control, enable/disable on/off switch. Has internal gain pot in addition to front panel volume control; max gain 66dB. Max output 0.5W into 3.2 ohms. Other variants (106C-E) have automatic output level control (up to 35 dB). Removeable KS-16728-L1 amplifier board has 4 RCA type 2N270 transistors with push-pull output and no interstage transformer. The 106D-F variants use a pair of Western Electric 12M transistors and two 2N4036 push-pull drivers. All AT&T documentation I have show 106A-C using a pair of WE 12M transistors and two WE 12H push-pull drivers. AT&T documents don't show the RCA 2N270 transistors in the unit I have.
  • Net weight (2.2 lb = 1 kg)
  • 5 lb (5 lb 0 oz) / 2.270 kg
  • Mentioned in
  • - - Manufacturers Literature
  • Author
  • Model page created by Gary Brandenburger. See "Data change" for further contributors.

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