Cubo 15

hi, i allmost finished today 4 cubo extended cabs. i am looking for a way to upload the photos here. so you guys can see how nice they have become. to finish the cabs i am waiting on a mail from Johan. with the last info the boxes should be finished befor this weekend!

i had 4 JBL2226 and 4 Beyma 15G450N drivers, the beyma has a little more Watts than the JBL but in the end i choose the JBL2226 because its resonance freq is 5hz lower than the beyma. And the JBL has a bigger Xmax than the Beyma. i found the missing info on the forum, so tonight they will be finished. if anyone can tell me how to upload the photos on this page i will upload them this night!

I am about to embark on my first cubo 15 extended build (2 off) and would
greatly appreciate any tips regarding screws, glue, clamping etc etc. I am reasonably confident I can make a decision went job of these excellent cabs but would love to hear from the experts I intend using them for a band !!!

@ Ip8124: For Cubo 15 a higher resonance frequency is better, the lowest reproduced frequency is more or less the characteristic of the cabinet, not the driver.

You can upload pictures to a hosting site like this one or use attachments from the message board itself.

@ Homebrew: n case you're using screws clamps are not needed. Screws 4.0 x 40 mm, pre-drill with a 2.5 - 3 mm drill. At least 5 cm from the edges. Use normal wood glue or poly urethane wood adhesive. Mount the drivers with bolts and t-nuts, mount/ drill before assembling the cabinet.

Best regards

Cubo

Will it work with the B&C 15TBX100 ?

The 15TBX100 (heck of a driver) will work best in Cubo 15 Extra Extended. To get the plans send me an e-mail (to questionsaboutcubo.at.gmail.com)

Best regards

Cubo

Hello, i have been looking for building 2 Cubo 15, to use for a outdoor festivalsspeaker for this years Roskilde Festival.
And i was wondering if i can use JBL E 140-8 drivers instead of kappa drivers ( www.usspeaker.com/jbl%20e140-1.htm ) Will these be suitable?
Sensitivity, Frequency Response are both above what is recomended.
Thanks in advance

Sensitivity, Frequency Response are both above what is recomended

Recommended by whom?

Best regards

Cubo

Recommended in your plans footnotes " drivers with EBP of 100 or higher; Fs (27-50 Hz), Qts (0.21 - 0.41), Vas (150 - 300 L) / (7.4 - 11.1 ft^3). Where EBP = Fs / Qts (strictly speaking it's Fs / Qes)"

You know, I would be lying if I said I saw the words sensitivity and frequency response in those sentences, so how do you?.

I see how to calculate sensitivity from those figures but it forces me to the conclusion that as long as sensitivity is between 90,3 - 104 dB/W/m, it will be fine. That kinda redirects me into the thinking that the words sensitivity and frequency response aren't in those sentences because they don't !@#$% matter.

Yes, the JBL E140 is usable in Cubo 15 Extra Extended up to a couple 100 Watts it's a good choice.

Best regards

Cubo