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ESS Medium Size Bookshelf Speakers - $375 (Eugene)
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Manufactured in USA 1979-83
One of the most popular Performance Series models... the 1978 ESS PS 8a speakers utilize a high quality 8" woofer with the Larger bezel mounted Air Motion Transformer Tweeter...
A large labyrinth (internal cabinet volume), with a passive radiator and a high quality woofer provides lower bass frequencies.
The result is spot-on accuracy... superior sound reproduction and extended Dynamics
Technical overview
German Scientist Oskar Heil's Famous *Air Motion Transformer (*A.M.T.) tweeter
* A.M.T: Accordion-like folded Metalized Mylar pleats 0.0005 inch thick suspended within a powerful opposing magnetic field ...
Applied audio signals react to the magnetic field and stimulate the Mylar membrane.
The bellows-like motion of the folded pleats "squeezes" air out five times faster then the air motion of a conventional cone / dome tweeter
* See diagram above
Drivers per cabinet:
Bass frequencies: One 8” High performance Woofer
High frequencies: One (Patented) Heil Air Motion Transformer Tweeter
Deep bass frequencies: One 10" passive radiator
Acoustic suspension (Sealed cabinet) design
Specifications:
Frequency Response: 29 Hz - 22 kHz
Sensitivity: 89 dB / 1 Watt / 1 Meter
Allowable Input Power: 150 Watts (Clean)
Dimensions: 19 1/2" tall x 10 1/2" deep x 11 1/2" wide
The ESS PS 8a's provide Audiophile dynamics and amazing sound-staging and imaging in a pristine condition walnut cabinet
Near Mint condition
Please CALL for information / Audition
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