Cubo Sub

And some pictures from the end result.

criticism and coments are welcome.



















thanks to Johan Rademakers

Best regards

Koen van den bersselaar

(sorry for my bad english, i'm from holland!)

so did u follow the cubo sub plans??
an this is your external---77cmx62cmx77cm??

t.geessounds wrote: so did u follow the cubo sub plans??
an this is your external---77cmx62cmx77cm??

Yes, i build the subs exactly like the plan!

Hello Cubo! What is the sensitivity of this cabinet in the band from 40 to 100? You measured the spl instrument?
Thank you!

This measurement is compared to a 18" reflex tuned to 37 Hz.

www.freespeakerplans.com/kunena/38-hoste...bo-18?start=40#11555

Hornresp simulates sensitivity as 100 - 102 dB/W/m dependant on the driver used.

Best regards

Hi Cubo!. which cab is gud for outdoor cubo 18 sub or cubo 18. what are the difference when using a fane xb 18.Thanks

There is little difference in the throw between a Cubo Sub and Cubo 18, though Cubo Sub is slightly better in that department. Cubo Sub will drop lower (usable from 30 Hz and up, for that very lowww-sound), Cubo 18 is more allround from 40 Hz and up but more compact.

Best regards

Cubo

cant i build these 77 x 54.5 x 77 ?
for the speakermax speakers WF18THOR
www.speakermax.com/pages/woofer.html

Hi Cubo,

Can you mix cubo sub (magnet in chamber) with cubo 15 ( magnet in chamber)

Best Regards
Skillz

@T.geessounds: It doesn't seem to mention any of the Thiel/ Small parameters anywhere. For a 4" VC, 120 oz. magnet 18" driver, I expect it to work but absence of T/S-parameters is usually not a very good sign.

Reducing the width of Cubo Sub like that will raise the lower usable frequency up by 3 - 4 Hz, making it a more or less 34 Hz and up cabinet.

@Skillz: You can mix them (on the crossover) but in that case I would prefer physically seperating them. Say the Cubo 15 left and right and Cubo Sub in a centerstack. If you're gonna mix them in a single stack, I don't necessarly expect trouble but since there are so many variables you never know for sure. If you're going to use the same high pass for both I would make it as high as possible and steep.

Best regards

Cubo