Copyright © 2017 ESS Laboratories LLC. All Rights Reserved. Printed in the U.S.A. Products Subject to Change Without NoticeALL LOGOS and PRODUCTS used in this brochure are the REGISTERED TRADEMARKS of ESS Laboratories LLC.

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• The Art of Sound• AMT Air-Motion Transformer• Heil AMT Air-Motion Transformer• ESS-Heil AMT• ESS-AMT• Air-Motion Tweeter• AMT Tweeter• AMT/Air-Motion Transformer• Multi Fold Air-Motion Transformer

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S E R I E S

Featuring the OriginalHeil Air-Motion Transformer

2017 Brochure

AMT™ Limited Edition

Power Capacity: 375 Watts RMS (clean music power)Frequency Response: 30-23k ± 3dbCrossover Frequency: 800 HzDispersion: 120° Horizontal 45° VerticalEfficiency: SPL@1m/1w: 98dBLow Frequency Driver: 12” Cast Frame Treated Paper Cone, Magnet Assembly, Weight 7lbs 5 ozBass Radiator: 12” Cast Frame Treated Paper Cone

*Also applies to AMT™ 12”

LD-10

Power Capacity: 200 Watts RMS (clean music power)Frequency Response: 35-24k ± 3dbCrossover Frequency: 1000 HzDispersion: 120° Horizontal 45° VerticalEfficiency: SPL@1m/1w: 96dBLow Frequency Driver: 10” Cast Frame Treated Paper Cone, Magnet Assembly, Weight 7lbs 5 ozBass Radiator: 10” Cast Frame Treated Paper Cone, Med - AMT Tweeter™

*Also applies to AMT™ 10”

ML-8

Power Capacity: 160 Watts RMS (clean music power)Frequency Response: 40-23k ± 3dbCrossover Frequency: 2000 HzDispersion: 120° Horizontal 45° VerticalEfficiency: SPL@1m/1w: 95dBLow Frequency Driver: 8” Poly Driver8” Bass Radiator: Med - Air Motion Tweeter™

*Also applies to AMT™ 8”

ESS AMT 422 - Headphones are unique that are Heil AIR-Motion Transformers. ESS has used with

great success as tweeters in its loud speaker systems. The improved Multi Fold Air-Motion

Transformer produces a full range of natural sound that ESS is known for.

SPECIFICATIONS:Driver: Multi Fold Air-Motion Transformer

Frequency Response: 15-4500 HzImpedance: 32 Ohm

Sensitivity: 100db 1 mv

ESS RLM 713 - Big ebony wood casing for superior acoustic reproduction. Flexible 180 degree

rotatable ear cups. Detachable cable, allowing for convenient storage and portability

SPECIFICATIONS: Speaker Size: 50mm

Frequency Response: 20Hz-20KHzImpedance 40 Ω /Sensitivity 113 +/- 3dB at

1KHz1mW / Cable Length 1.2 & 2mRated Input Power: 30mW

Maximum Input Power: 50mW

ESS 252 / 252bt - Bigger ebony wood casing for superior acoustic reproduction. Outstanding bass response, wider sound domain with fresh music details.

SPECIFICATIONS:Speaker Size: 50mm Dynamic OrientationFrequency Response: 20Hz - 20KHzSensitivity: 113+/- 3db at 1KHz 1mWImpedance: 40 OhmR & L Balance: <3db (20Hz - 10KHz 1mW)Rated Input Power: 30mWMaximum Input Power: 50mW

LD-8

Power Capacity: 160 Watts RMS (clean music power)Frequency Response: 40-23k ± 3dbCrossover Frequency: 2000 HzDispersion: 120° Horizontal 45° VerticalEfficiency: SPL@1m/1w: 95dBLow Frequency Driver: 8” Poly Driver8” Bass Radiator: Med - Air Motion Tweeter™

Power Capacity:125 Watts RMS (clean music power)Frequency Response:30-23k ± 3dbCrossover Frequency:800 Hz

LD-6CDispersion:120° Horizontal 45° VerticalEfficiency: SPL@1m/1w:96dBLow Frequency Driver:2”- 6” Drivers, Large - AMT Air Motion Transformer™

AMT™ 8”, 10”, 12”

For 40 years ESS® Laboratories has been an industry leader since the mid-1970s and is proud to announce the introduction of its enhanced ESS-Heil™ Air-Motion Transformer™. The original air-motion transformer was created by the noted German physicist, Oskar Heil, and his patent was licensed exclusively to ESS® Laboratories for production in the United States. The Heil Air-Motion Transformer™ uses revolutionary, and unique, technology that remains unsurpassed and is state-of-the art. The key to the system is the design of its patented, double-sided diaphragm and its magnetic components that concentrate the sound unknown in conventional transducers. The sound signal moves five times faster than the air-motion of a conventional cone driver.