thinking back, FE206EN was "impressive" in the first K12 aka "Karlsonette" and should work in the 2nd and 3rd version.
Below are a couple of clips of it in a 0.62 scale K15 (~20.5” tall x 14.5 wide x 11” deep). There was no damping material on the back panel and none in the front chamber so melamine pads placed strategically would probably help matters.
0.62 Scale Karlson cabinet loaded with Fostex FE206EN - YouTube
0.62 Scale Karlson cabinet with Fostex FE206EN - Soprano voice & Harp - YouTube
The 2nd or 3rd K12 scaled 0.8X might be more suitable and would be using half inch material =20.2” tall, 13.25” wide x 11” deep
A K-coupler with a smoothing stub could be good and the stub with damping materials would flatten response and absorb reflections.
Karlson's K8 is small, tuned around 95Hz an would be ok with a little subwoofer. It can develop some real "hit" with Beta8cx.
FE206EN plays nice in a K12 but it would be interesting to see
If one could go a lot smaller in size and still get some punch.
XRK971’s XKi suggestion would be around 15” tall, 11” wide and 11” deep - that would be a fun size for sure:
XKi dims by XRK971
Although tuned low (~41Hz) a Karlsonator 8 should be a pretty good match for 206 and that was the original prototype built along with a Karlsonator 6 (excellent cabinet)
I had FE206EN in a curved reflector coupler about "K10" size and the sound was very good but was not happy with the response. A bit taller would have helped with the reflector.
Also, FE206EN ran in a 28" tall K8 with 10 degree cant panel above the baffle. I think a height of about 22-23" would have worked better.
Below are a couple of clips of it in a 0.62 scale K15 (~20.5” tall x 14.5 wide x 11” deep). There was no damping material on the back panel and none in the front chamber so melamine pads placed strategically would probably help matters.
0.62 Scale Karlson cabinet loaded with Fostex FE206EN - YouTube
0.62 Scale Karlson cabinet with Fostex FE206EN - Soprano voice & Harp - YouTube
The 2nd or 3rd K12 scaled 0.8X might be more suitable and would be using half inch material =20.2” tall, 13.25” wide x 11” deep
A K-coupler with a smoothing stub could be good and the stub with damping materials would flatten response and absorb reflections.
Karlson's K8 is small, tuned around 95Hz an would be ok with a little subwoofer. It can develop some real "hit" with Beta8cx.
FE206EN plays nice in a K12 but it would be interesting to see
If one could go a lot smaller in size and still get some punch.
XRK971’s XKi suggestion would be around 15” tall, 11” wide and 11” deep - that would be a fun size for sure:
XKi dims by XRK971
Although tuned low (~41Hz) a Karlsonator 8 should be a pretty good match for 206 and that was the original prototype built along with a Karlsonator 6 (excellent cabinet)
I had FE206EN in a curved reflector coupler about "K10" size and the sound was very good but was not happy with the response. A bit taller would have helped with the reflector.
Also, FE206EN ran in a 28" tall K8 with 10 degree cant panel above the baffle. I think a height of about 22-23" would have worked better.
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looks like it would be just a bit larger than X's Beta8cx XKi and still quite compact.
I think Beta8cx with the right lowpass network would play pretty well and with some "hit".
I think Beta8cx with the right lowpass network would play pretty well and with some "hit".
An externally hosted image should be here but it was not working when we last tested it.
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FE206EN is a good driver for Karlson type in general.
Factory K8
It was in the original Karlsonator8 prototype (left) btw - the Karlsonator6 is a really good cabinet - I've run it with FE164 and LCao F6
FE206EN plays pretty well in a 0.62 scale K15. It may be better in K12 and also perhaps a scaled K12 if one has low end augmentation. In K12 its more cohesive than a little backhorn.
FE206EN ran in the little K below which had a curved reflector and horizontal slot port. It played well with both the fast and slow apertures seen in this picture so should do well with the XKi.
I think the little XKi at about 12"x12"x16" could be very cool. It would be interesting to see/hear if the top mounted vent "de-Qs" the cavity peak predicted in BP modeling.
Factory K8
It was in the original Karlsonator8 prototype (left) btw - the Karlsonator6 is a really good cabinet - I've run it with FE164 and LCao F6
FE206EN plays pretty well in a 0.62 scale K15. It may be better in K12 and also perhaps a scaled K12 if one has low end augmentation. In K12 its more cohesive than a little backhorn.
FE206EN ran in the little K below which had a curved reflector and horizontal slot port. It played well with both the fast and slow apertures seen in this picture so should do well with the XKi.
I think the little XKi at about 12"x12"x16" could be very cool. It would be interesting to see/hear if the top mounted vent "de-Qs" the cavity peak predicted in BP modeling.
Here's a somewhat better sketch of an XKi alignment Karlson type cabinet for FE206xx. At ~31.7 liter external bulk its quite compact.
Although the vent is specified as 10 inches in length, it might be wise to reduce that length by 15-20%.
Although the vent is specified as 10 inches in length, it might be wise to reduce that length by 15-20%.
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