Xophonic CX-17

Radio Craftsmen Inc., The; Chicago (IL)

Data
Forum
Pictures
Collections

  • Year
  • 1957
  • Category
  • Audio Amplifier or -mixer
  • Radiomuseum.org ID
  • 208544

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

 Technical Specifications

  • Number of Tubes
  • 4
  • Main principle
  • Audio-Amplification
  • Wave bands
  • - without
  • Power type and voltage
  • AC/DC-set / 117 Volt
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 8 inch = 20.3 cm
  • Power out
  • 3 W (unknown quality)
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: Xophonic CX-17 - Radio Craftsmen Inc., The;
  • Shape
  • Book-shelf unit.
  • Dimensions (WHD)
  • 23.5 x 10.75 x 10.25 inch / 597 x 273 x 260 mm
  • Notes
  • This is a 50ms audio delay amplifier for home use in conjunction with an existing mono audio system. The input is a 16 Ohm transducer that takes input from the speaker terminals of an existing mono system. The transducer drives a coiled aluminum hose to obtain the 50ms delay. A crystal microphone picks up the delayed audio signal from the aluminum hose delay line to drive the built-in amplifier and speaker with a volume control. A casual hearing test driving the transducer from a 50 Ohm audio generator suggests an overall bandwidth of 4kHz. The aluminum hose delay line is carefully acoustically impedance matched to achieve the 50ms delay without reflections. When listening exclusively to the Xophonic, there is no noticeable reverberation or echo; the spacial effect requires the simultaneous operation of the existing mono speaker system with the Xophonic.
  • Net weight (2.2 lb = 1 kg)
  • 24 lb (24 lb 0 oz) / 10.896 kg
  • Mentioned in
  • Radio and TV News magazine June 1957
  • Author
  • Model page created by Joe Sousa. See "Data change" for further contributors.

 Collections | Museums | Literature

Collections

The model Xophonic is part of the collections of the following members.

 Forum