Original Great ESS Heil AMT Air-Motion Transformer™ III - SMALL
Invented by the noted physicist and scientist, Dr. Oskar Heil, the ESS Heil Air Motion Transformer (AMT) tweeter uses a folded pleated Mylar diaphragm just 0.0005" thick. 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 Heil AMT Air Motion Transformer linearly squeezes and expands its diaphragm's pleats, moving the airload at a very high velocity. Because the moving mass of the Air Motion Transformer is extremely low and the magnetic structure very powerful, this combination results in extremely high acceleration that yields amazing transients.
Weight: 8.5 pounds
Impedance: 4 ohms, Re: 3.9 ohms
Power: 20 watts RMS, 100 watts max
Response: 30 kHz - 1000 Hz
Sensitivity: 95 dB, 1 watt, 1 meter
Fits ESS Cabinet and Driver Models:
ESS: AMT-1. AMT1, AMT-1A, AMT-1B, and many more
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