Price: $50.40


  • Buy 10 - 10,000 and get an additional 10 % off
Manufacturer: Fostex
Product ID : fe103en
Weight: 1.40 lbs
Manufacturer: Fostex
E-mail to a friend


Fostex FE103En 4" Full Range

The redesigned FE103EN features an adapted ES cone and center cap. The diaphragm material consists of a fine, supple, high density fiber which successfully improves the mid-high reproduction. A 80mm diameter strong ferrite magnet is used. The FE103EN has well tuned Qts/Mms values for ease of use in small bass reflex type enclosures or folded horn enclosures.

  • ES banana pulp paper cone for strength
  • Coated cloth surround
  • 80mm diameter strong ferrite magnet
  • Qts and Mms values are well tuned for bass reflex or folded horn enclosures
  • Available with cabinets as part of the Kanspea Kit

Spec sheet: Fostex FE103En Full Range

Comment on Facebook

Product Reviews

Login or Register to write a review.
Reviewed by kicooke
04/29/2019 - 05:59:09 PM
Its hard to believe there are better drivers!
First off, for an uber cheap build I put these drivers in these cabinets and stuffed them to gills. I have them connected to a Sabaj A3 mini system with a cheap 6.5 inch sub for the low end and all I can say is wow. I'm listening to Chance's End - The Outsider and the sound coming out is pure heaven.

The drums sound like drums, the guitars sound like guitars, the violin is amazing and everything just comes together so balanced that I just can't believe it! I've been doing builds with the Dayton Audio 4 inch coaxials (which sound nice too) but I cannot believe the clarity of these speakers. The amp may be a little to much at the high end but I don't really push it.

Like my title suggests, I know there are better speakers out there and if these sound this good, I would love to hear how those sound. For now though, this is my go to system. I can't wait to hear them after they have some playing time as they only have about 20 hours on them now.

I'm glad I listened to the reviews on this site and pulled the trigger on these speakers.
Reviewed by Justinm
03/03/2013 - 09:44:37 AM
fe103em = awesome!!!

I am an avid enthusiast of stereo equipment. My latest adventure was building a low power vacuum tube amplifier kit. The kit was very successful. That led to my next need... very efficient speakers. I wanted to have a smaller size bass reflex, bookshelf enclosure. I tried several commercially available speakers. Their touted efficiency was at 1000 hz. There were steep drop-offs in efficiency outside of that range. This would not work...

Enter the fe103en:
With great help and direction from the Madisound team I invested in a pair of fe103en speakers. Combined with a pair of .25cu ft enclosures and a two bass reflex ports I was rewarded with wonderful sound.

For lower listening levels and smaller speaker cabinets you can make a low power (or high power) amplifier sing. For the money these drivers cannot be beaten. I have 10 pairs of speakers and these are my favorites. Absolutely fall out of chair vocals and silky Mid-range.

Clear out your calendar because these speakers will make you listen for days!

Thank you Madisound for such a great experience!