Fostex FE108EZ 4" Full Range Sigma Series

Price: $129.50


  • Buy 10 - 10,000 and get an additional 10 % off
Manufacturer: Fostex
Product ID : fe108ez
Weight: 3.08 lbs
Manufacturer: Fostex
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Fostex FE108EZ 4" Full Range Sigma Series

100mm(4") Full Range. Features include a unique Hyperbolic Paraboloid shell diaphragm, UDR tangential edge damping and ES cone manufactured from banana plant fiber. This all helps to produce a smooth and detailed sound.

Available as upgrade option in the BK12m Folded Horn Speaker Kit.

Here is a link to the famous Negaoka Tetsuo Swan folded horn design for the FE108E∑ speaker.  This horn produces bass response that is astonishing for such a small speaker.

More plans for the Swan horn box here:

Fostex Back Loaded Horn Plans: FE108E Sigma Recommended Back Loaded Horn Type Enclosure Plans

Spec sheet: Fostex FE108EZ Full Range

Use QC250 Quick Connects (0.25")

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Product Reviews

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Reviewed by tmalkki
tmalkki bought "Fostex FE108EZ 4" Full Range Sigma Series" on our website
03/02/2017 - 10:56:56 PM
Amazing driver
Using as a replacement for original Thiel CS3.5 midrange. Just installed today, and even though they need some time to settle and break in, I am beyond pleased. I've used the original mid, a Scanspeak mid, a Dayton mid, and this is by far the most cohesive and honest choice. The music is exactly where it should be, it's precise but not bright, and it adds a depth or dimension that was not there with the other drivers. Very happy with this Fostex FE108EZ. Somewhat coincidentally, the diameter was a perfect fit for the existing cutout. Highly recommend as a replacement for what is an almost-impossible original driver to find in halfway decent shape.
Reviewed by Jeffrey
04/23/2013 - 04:49:54 PM
Killer fullrange driver.
All I can say is this driver is worth more then its weight in gold all the way around while playing music. I have used these driver for a while now. I would have to say they are a league above the Reg. Fe series fullrange drivers from Fostex. These drivers also pull out more micro details then any other smaller fullrange drivers I have used. Thanks madisound. Mr. Jeff
Reviewed by jefope4
05/24/2012 - 03:52:49 PM
This little driver is amazing.
Hello. I had a chance to use a pair of these drivers for alittle while. I can say that they are very fast and very revealing drivers. The drivers didn't seem bright or tizzy. They were very natural and have a very strong midbass. They are very well built and made. It looks like this driver was very thought out and the detailing of this driver is very impressive. This is a step above the Reg. Fe line by night and day. A guy at work wants me to order him a pair as soon as he gets the money. He was that impressed by just looking at that the drivers. jm