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Legendary ESS Floor-standing Speakers - $1,500 (Eugene)
condition:
like new
make / manufacturer:
ESS
model name / number:
AMT 3 Rock Monitors
size / dimensions:
39-1/4 x 15-5/8 x 15-7/8 inches
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Manufactured in USA 1974-78
* All woofers and mid-range drivers have been updated / upgraded with new high quality matched drivers for improved performance
History
For over forty-five years ESS has been on the cutting edge of audiophile sound reproduction. The original design of the “pyramid-shaped” AMT 1’s (see other postings) in 1973 introduced a new benchmark for high-end speaker performance
Most ESS pyramid shaped speakers utilized a 12" woofer, a passive deep bass radiator and the AMT... some enthusiasts complained about lack of mid-range emphasis through the 12" woofer and the AMT
As a result, one of the most treasured ESS models... the 1974 ESS AMT 3 Rock Monitors were designed, adding an isolated 6" mid-range driver to compliment the two 10" woofers
Along with a cavernous internal cabinet volume and the Air Motion Transformer tweeter... the result is spot-on accuracy... superior vocal mid-range reproduction and superb balanced sound quality
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:
Low frequencies: Two 10” high quality poly-treated fiber Woofers
Mid-range frequencies: One 6 1/2" poly-treated fiber Driver (Isolated)
High frequencies: One (Patented) Heil Air Motion Transformer Tweeter
Specifications:
Frequency Response: 25 Hz - 24 kHz
Sensitivity: 90 dB / 1 Watt / 1 Meter
Allowable Input Power: 20-500 Watts (Clean)
Dimensions: 39-1/4 x 15-5/8 x 15-7/8 inches
The ESS AMT 3 Rock Monitors provide superior sound-staging, imaging and vocal dynamics
In a stunning Walnut veneer cabinet...
Near Mint condition
Please CALL for information / Audition
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