WM-10

Audio Cassette Player
Date of appearance: 1983
Trademark: Sony, Walkman
Manufacturer: Sony Corporation
Product Line: Walkman
Made in: Japan
Weight: g
Materials: aluminium case
Tags: sonywalkman, gregorybotha


The Sony WM-10 cassette player was released in the market in 1983. Its tiny size represents a tour-de-force of early 1980’s engineering. The WM-10 is actually smaller than the cassette it plays and needs to be slid open to make the cassette compartment large enough to accommodate the tape. Uses a single 1.5V AA type battery with a step-up DC-DC converter to boost the voltage to a useful level. Sony had used these devices in the past but for the WM-10 something all together smaller was needed. The converter used in the WM-10 was made using miniature components on a thin, flexible printed circuit. This was then rolled up on itself into a tube and tucked down the side of the chassis. By these means, a compact assembly that was well screened from the rest of the circuitry was realized. The single AA battery was housed in a compartment next to the heads at the top of the machine, and usefully employed the depth in the case required for the heads to retract into.

WM-10
Photo by Gregory Botha
Photo by Gregory Botha
Photo by Gregory Botha
Photo by Gregory Botha
Photo by Gregory Botha
Photo by Gregory Botha
Photo by Gregory Botha
Photo by Gregory Botha