FOSTEX FE83En + Back-Loaded Horn with Duct

[nandappe]

FE83En sound is nice vocal.

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

 

[Bigun]

nice build!

...the youtube video sounds a bit coloured to me but I like the choice of music

 

[freddi]

impressive mass loaded BLH cabinet and the Cole selection sounds very good all around.

I think similar would work with Faital and LaVoce 3" drivers

 

[vinylkid58]

Yeah, the bass is pretty lumpy. At least what there is of it.

jeff

 

[freddi]

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

 

[picowallspeaker]

Freddi, that 'mask' is for big cones, I guess that at JBL is made for correcting the DI of big woofers, and a 3" cone doesn't suffer from bad DI at crossover freq...it isn't even crossed to anything!
Foam board? Why would you want to use it?

 

[freddi]

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 (?)

 

[nandappe]

Dear all.
Thanks reply.