• Country
• United States of America (USA)

• Manufacturer / Brand
• Dyna Co. (Dynaco); Philadelphia PA

• Year
• 1960

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 124711

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

• Number of Tubes
• 4

• Valves / Tubes
• 7199 EL34 EL34 GZ34

• Number of Transistors

• Semiconductors
• Selenium-Rectifier

• Main principle
• Audio-Amplification

• Wave bands
• - without

• Power type and voltage
• Alternating Current supply (AC) / 110 Volt

• Loudspeaker
• - This model requires external speaker(s).

• Power out
• 40 W (90 W max.)

• Material
• Metal case

• from Radiomuseum.org
• Model: Dynakit Mark IV - Dyna Co. Dynaco; Philadelphia

• Shape
• Tablemodel, with any shape - general.

• Dimensions (WHD)
• 14 x 6.5 x 5 inch / 356 x 165 x 127 mm

• Notes
• The Mark IV was essentially one half of a Dynakit Stereo 70. When used as a pair for stereophonic playback, it's benefit was that each amplifier had a separate power transformer instead of sharing one, as in the case of the Stereo 70. It has a nominal output of 40 watts with a peak rating of 90 watts. When introduced in 1960, it sold for $59.95 in kit form and $79.95 assembled.

• Net weight (2.2 lb = 1 kg)
• 9.1 kg / 20 lb 0.7 oz (20.044 lb)

• Price in first year of sale
• 60.00 $

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

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

• Other Models

• Here you find 27 models, 27 with images and 18 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Dyna Co. (Dynaco); Philadelphia PA