Original Great ESS Heil AMT Air-Motion Transformer™ II - MEDIUM
Original Great ESS Heil AMT Air-Motion Transformer™ II - MEDIUM
Original Great ESS Heil AMT Air-Motion Transformer™ II - MEDIUM

Original Great ESS Heil AMT Air-Motion Transformer™ II - MEDIUM

Regular price $189.00 Sale

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: 10.5 pounds
  • Height: 5″
  • Width: 6.75″
  • Depth: 4.25″
  • Impedance: 4 ohms, Re: 3.9 ohms
  • Power: 30 watts RMS, 130 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

International customers, shipping rates are available during checkout. All duties and fees are paid by customer.