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Speakers >> Ribbon Tweeters

ESS Great Heil Air-Motion Transformer

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ESS Great Heil Air-Motion Transformer larger images.

List Price:	$399.00 EA
Your Price:	$350.00 EA

Sku 264-600: In Stock

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The ESS Air Motion Transformer (AMT) uses a folded pleated Mylar diaphragm of a mere 0.0005" thickness! Its "voice coil" is a serpentine pattern of precision-etched aluminum, selected for minimal weight and high power handling. Unlike a normal piston loudspeaker that excites the air by alternately pushing and pulling a cone or dome, the AMT linearly squeezes and expands its diaphragm's pleats, moving the airload at a very high velocity. Because the moving mass of the AMT is extremely low and the magnetic structure very powerful, this combination results in extremely high acceleration that yields amazing transients. Specifications: *Power handling: 40 watts RMS/160 watts max *Impedance: 4 ohms *Re: 2.9 ohms *Frequency response: 800-20,000 Hz *Minimum crossover frequency: 800 Hz at 12dB/octave or more *SPL: 92 dB 1W/1m *Dimensions: 6" H x 6-3/4" W x 4-1/4" D.

Articulate, open sound quality
High sensitivity
Dipolar output for naturally ambient sound reproduction
Pleated diaphragm "squeezes" air instead of pushing it
800 to 20,000 Hz from a single source
Diaphragm shape delivers wide horizontal/narrow vertical dispersion

The AMT diaphragm's low mass and high output allow for an unusually high combination of efficiency and bandwidth to be attained in a single loudspeaker that is able to efficiently reproduce frequencies over the very wide range of 500 to 20,000 Hz. The AMT is a dipolar transducer—like a real musical instrument it propagates as much sound to the front as it does to the rear, enabling a more natural and musical ambience to be heard in the listening environment. The diaphragm's shape delivers wide dispersion in the horizontal axis but tightly controlled vertical coverage. This creates a wide soundstage while simultaneously minimizing unwanted reflections from floor and ceiling.

ESS manufactures the original and still best Air Motion Transformer invented by Dr. Oskar Heil over 30 years ago.

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