• Country
• Austria

• Manufacturer / Brand
• Philips - Österreich

• Year
• 1971–1975

• Category
• Sound/Video Recorder and/or Player

• Radiomuseum.org ID
• 28544

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

• Number of Transistors
• 52

• Semiconductors

• Main principle
• Audio-Amplification

• Wave bands
• - without

• Details
• Tape Recorder

• Power type and voltage
• Alternating Current supply (AC) / 110; 127; 220; 245 Volt

• Loudspeaker
• 2 Loudspeakers

• Material
• Wooden case

• from Radiomuseum.org
• Model: Maestro 4418 N4418 - Philips - Österreich

• Shape
• Tablemodel, with any shape - general.

• Dimensions (WHD)
• 515 x 200 x 380 mm / 20.3 x 7.9 x 15 inch

• Notes

• HiFi-Stereo-Vierspur. Bandgeschwindigkeiten: 4,75/9,5/19 cm/s; Spulen-Ø: 18 cm. Übertragungsbereich bei 19 cm/s: 40-20000 Hz. Stereo-NF-Verstärker mit 2 Endstufen je 10 W. Betrieb in horizontaler und vertikaler Lage möglich.

  ---

  Three motors. Three speeds: 4.75 / 9.5 / 19 cm/s( 1.7/8 / 3.3/4 / 7.1/2 ips). Max spool Ø: 18 cm. Frequency range at 19 cm/s: 40-20000 Hz. Stereo amplifier with 2 output stages each 10 W. This unit can operate in horizontal and vertical position. Output for external speakers with exclusion of the inside. Jack for stereo microphone and earphones. Inputs for Tuner, Tape, Aux and Phono.

  HiFi Stereo record and play two tracks. Mono four tracks. In mono mode with a normal tape, 1.0 mils thickness, at 1.78 ips (4.75 cm/sec.) we can record about 12 hours.

  Each button (Start, Stop, F.Forw, Rew, Play, Rec), controls the relative electronic board. All commands are executed by servocontrols with some relays. Considering the numerous problems, with the following model N4420, Philips has returned to the electromechanical controls.

• Net weight (2.2 lb = 1 kg)
• 12 kg / 26 lb 6.9 oz (26.432 lb)

• External source of data
• Erb

• Source of data
• Handbuch VDRG 1971/1972 / Radiokatalog Band 2, Ernst Erb

• Literature/Schematics (1)
• -- Original-techn. papers.

• Other Models

• Here you find 1069 models, 1004 with images and 851 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Philips - Österreich