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In this age of puff and pretense, how does one get across the fact that we have actually developed a loudspeaker not only theoretically but audibly superior to any other speaker made? We could talk about the inventor and how it was invented. We could tell you that the ESS Heil air-motion transformer is not the product of a casual tinkerer but the product of authentic genius: the inevitable theoretical principles of physics were wed to four years research and development by physicist Oskar Heil, the inventor of the velocity modulation principle, which underlies all Klystron and traveling wave tubes, (principle patent, Germany, 1933), the field effect transistor-the FET- (German patent, 1934), and the high convergence electron gun used in most color TV tubes (patent, 1947). In other words, the Heil air-motion transformer is the latest, but by no means the last revolutionary invention by the remarkable Dr. Heil.
We might mention its utter uniqueness.
The Heil air-motion transformer midrange-tweeter has no paper cone, no mylar dome, no wire voice coil, no elastic suspension, no "push-pull" motion, negligible mass and operating resonance. Instead, a simple, startling, accordion like diaphragm. The woofer, of course, is something else! And must be seen to be believed.
We could note its specifications. Distortion for example? As low as that found in modern electronics. Transients? Greater clarity and delineation than an electrostatic, with a rise time of 15 microseconds for that "instant acceleration" that distinguishes a Ferrari from a Volkswagen. Dispersion? A perfect bipolar radiation for the airiness and imaging that mark the live performance. Frequency response? Flat to 24 kHz for the "extra sensory presence" you can feel as well as hear.
Or we could talk about its simplicity and relative low cost? You can now buy an ESS Heil air-motion transformer system for as low as $239. And if you've got grander visions, you can listen to the awesome full range Heil air-motion transformer speaker system, the ESS amt 2. Price $600. Less than many other pretenders to perfection.
Durability? Built to last a lifetime. And guaranteed for life.
Sound? Why ask us when you can trust your own ears? Elegant styling and remarkable engineering.
The unbeatable combination.
ESS--Sacramento, Ca. 95827
ESS, Inc. 1974--- as clear as light.
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