ESS AMT-1-A

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General information[contribute]

The ESS AMT-1-A is a ribbon speaker. It is part of the AMT series. It was manufactured from 1977 to unknown.

RJ (December 3, 2008): The ESS AMT-1A was NOT a ribbon speaker. I grew up with these as my brother brought them back from the Navy with him in 1978. I got to enjoy them through the entirety of the 80's and 90's until he sold them. They were the early version of the AMT-1D and the description is almost exactly the same. An extremely heavy (120lbs I believe) solid wood foundation 12" woofer with 12" rear facing flat passive radiator speaker in a sealed enclosure, which handled 400W continuous RMS.

The woofer easily performed with todays best subwoofers, including the reknowned $2300 paradigm reference sub currently on the market (which I own - so yes I know what I'm talking about). They had a rated 1 watt SPL of 91db (the 1D are rated at 93db). The woofer crossed over at 800hz into the Heil Air Motion Transformer which handled everything else to a degree only equalled by all time great speakers in the $20,000 plus range, such as the Infinity Reference IV and the like. I currently own a complete Paradigm studio reference surround with Studio 100 v.3's in front, and studio 20 v.2 powered in rear (total speaker system price with mid and sub: $6000. I often think about how incredible a surround system based on the AMT-1 line would sound. That's how incredible that speaker was.

Related models

The following models were also produced in the AMT series:

ESS AMT
ESS AMT Monitor
ESS AMT-1
ESS AMT-1 Tower
ESS AMT-1-A Monitor
ESS AMT-1-AB
ESS AMT-1-AM
ESS AMT-1-B
ESS AMT-1-C
ESS AMT-1-D
ESS AMT-10-B
ESS AMT-16
ESS AMT-2
ESS AMT-3 Monitor
ESS AMT-320
ESS AMT-330
ESS AMT-4
ESS AMT-5
ESS AMT-5-A
ESS AMT-6 Pro
ESS AMT-8
ESS AMT-8-H
ESS Heil Elite
ESS Tempest

Alternate names[contribute]

ESS Heil AMT-1-A

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