Air Motion Transformer
He also invented the "air-motion transformer" audio speaker technology made famous by the amt1 speaker of ESS in the early 1970s.
The amt diaphragm is made of a mylar ribbon, bonded with conductive aluminum strips. It is equivalent in surface area to a conventional seven-inch cone type mid-range driver, but is accordion-folded down to a compact one and a half inch grouping for point-source dispersion. The low-mass diaphragm is suspended within a dipole magnetic field concentrating an intense field around said diaphragm. When signal current passes through the aluminum strips, the ensuing bellows-like motion of the folded pleats moves air five times faster than with a conventional cone driver. This rapid acceleration of air-motion is claimed to provide enhanced sound reproduction, including high dynamic range and over a broad frequency range.
Read more about this topic: Oskar Heil
Famous quotes containing the words air, motion and/or transformer:
“People fall out of windows, trees tumble down,
Summer is changed to winter, the young grow old
The air is full of children, statues, roofs
And snow. The theatre is spinning round,
Colliding with deaf-mute churches and optical trains.
The most massive sopranos are singing songs of scales.”
—Wallace Stevens (1879–1955)
“The moments of the past do not remain still; they retain in our memory the motion which drew them towards the future, towards a future which has itself become the past, and draw us on in their train.”
—Marcel Proust (1871–1922)
“Man, became man through work, who stepped out of the animal kingdom as transformer of the natural into the artificial, who became therefore the magician, man the creator of social reality, will always stay the great magician, will always be Prometheus bringing fire from heaven to earth, will always be Orpheus enthralling nature with his music. Not until humanity itself dies will art die.”
—Ernst Fischer (1899–1972)