Toshiba HR40X - 4 Channel Quadrophonic Headphones, 1973, made in Japan

 

Link: radiomuseum

You can switch it from 2 channel to 4 channel.

Covered in a mottled brown, leather type material.

Each ear plate houses have 2 speakers, which provide the balance sound, externally they are labelled left/right and front/rear.

Left plate houses the 2/4 channel switch. the cable has front/rear label too. Two plugs are all 6.3 mm phone connectors. The headphone has a adjustable headband and stop with two screws.

Country:  Japan

Manufacturer / Brand:  Toshiba Corporation; Tokyo

alternative name  

Shibaura Engineering Works

Brand Tokyo Shibaura

Year: 1973 ? Category: Loudspeaker, headphone or earphone

Wave bands - without

Details

Loudspeaker - Is a Headphone or Earphone

Power out

Model: HR40 - Toshiba Corporation; Tokyo

Material Various materials

Notes

• Quadrophonic headphones.
• 4 channel / 2 channel switcher.
• Each 2 dynamic LS systems, 20-20000Hz, 4 x 1mW
• Impedance 8 oHm