FOSTEX FE83En + Back-Loaded Horn with Duct

FE83En sound is nice vocal.

7L.jpg



8L.jpg



9L.jpg



FE83En sound at YouTube
YouTube Live Test-FOSTEX FE83En at 2.5 meter(Logicool C270n HD Webcam、PC、TASCAM 102i、AKG P220で配信) - YouTube
 
Here's something easy to try. Make this lens from foamboard, space so the cone can't hit it , then listen.

Print the template size so the driver frame is where there the blue circle sets

sorry for the circle not being quite round 😀

3atNb34.png
 
I know a cardboard Karlson cavity- slot works with a rising response 3" - guess that Fostex does not exhibit the rise like what I tried. Sorry for the poor advice. Furthermore, as I've not worked with foamboard, that may be too acoustically transparent for slot lens work (?)