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Fostex FE208ES-R Driver
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diyAudio Member

Registered: April 2004
Location: Orlando, Florida. USA
Posts: 606
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These are the Fostex FE208ES-R drivers that were, up until my discovery of the treated cone Dayton PS220-8 drivers, in my Sachiko enclosures. The FE208ES-R is "essentially" the FE208 Sigmas with the following changes made to make it Fostex's best attempt at producing the ultimate "full-range/wide-range" driver.

The FE208ES-R and FE208 Sigma differ in the following ways:

-- FE208ES-R sold for $1800/pr, the FE208 Sigma sold for $400/pr.
-- FE208ES-R has a magnesium dust cap to extend highend response, the FE208 Sigma uses the same banana fiber the cone is made from.
-- FE208EE-R has a 6.8Kg Alnico magnet, the FE208 Sigma has a 3.4Kg ferrite magnet.
-- FE208ES-R has a bio-cellulose based hybrid cone, FE208 Sigma uses a banana fiber cone.
-- FE208ES-R has a die-cast zinc frame, the FE208 Sigma has an aluminum frame.
-- FE208ES-R & the FE208 Sigma both have the UDR tangential surround & spider. The UDR or Up/Down Roll is created by joining up-roll and down-roll at their tangential surfaces while utilizing FEM or Finite Element Analysis to determined the optimum bonding points. This plays a key part in the overall performance of these drive units by providing better anti-resonance & superior amplitude characteristics.
Date: Mon August 23, 2010 Views: 19414
Filesize: 18.1kb, 47.7kb Dimensions: 815 x 400
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Keywords: Fullrange, Back-Loaded Horns
Additional Categories: Full Range
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