Frequency: From 40 Hz up to 110 Hz

Enclosure Type: Hybrid

Size: 62x62x62cm

Recommended Driver: icon Kappalite-3015lf (668.37 kB)icon Kappapro-15lf-2 (534.42 kB) and icon kappa-15lf (566.56 kB), 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)


Cubo 15": Cubo is a multi purpose, stand alone bass bin that will equal or out run a single 18" BR*, of similar size, from ~ 40 Hz and up in terms of sensitivity. Utilising a non-expensive driver such as the Eminence 3015LF, Kappa 15LF and Kappa 15LF Pro** and a cut list from a single 18 mm*** sheet (244 x 122 cm) / (8' x 4') with a single angled cut, Cubo 15" realises a cost effective, small and light weight enclosure following the KISS-principle.

Development: In 2007 the first prototype was build and tested. Cubo 15" is the 4th prototype in a line of hybrides aiming at the achievements as stated above.  The measurement below shows the gain over the stated basreflex (see * for details).

Footnotes:* 18Sound 18LW1400 in a 175 liter basreflex tuned to 37 Hz. (6,6 ft^3) vs. Cubo 15 ; Eminence Kappa 15LF.          ** Apart from these drivers Cubo will work with a wide variëty of 15" drivers preferably with an EBP of 100 or higher; Fs (27-50 Hz), Qts (0.21 - 0.41), Vas (150 - 300 L) / (5.5 - 11.1 ft^3). Where EBP = Fs / Qts.  If you're uncertain if a driver is suited, PM or mail me at This email address is being protected from spambots. You need JavaScript enabled to view it.         *** If you want to use 15 mm material use 11-ply Baltic birch, nothing less. Plans available on request.

Cubo 15 plans are also available in an Imperial version, plan available on request.

Designer: Cubo15 [view profile]alt

 

Plan:

Cutsheet (clearly visible after download):

 

 


Posted: 2 days 11 hours ago by DjMattiB #22600
DjMattiB's Avatar
Zaxder

Im not sure what kind of equipment you have, but I have build in high and low pass filters in my EQ that run in my rig. I've never had a problem and with having the EQ I can adjust for the room or event I'm playing.

Just my 2 cents,
Dj Matti B
Posted: 2 days 21 hours ago by zaxder #22594
zaxder's Avatar
Thanks for taking your time to answer my question.

Indeed I have been looking for a high pass filter, but I can't seem to find any. On different forums, people tend to explain, that it would be expensive to make/buy a high pass filter, and the only high pass filter I have been able to find, looks a bit dodgy to me.. I'm talking about filters like this: tinyurl.com/oq74k23

Can you recommend a filter that would do the job bearing in mind that the setup is for festival purposes and therefore needs to be relatively inexpensive?

Much appreciated
Posted: 3 days 8 hours ago by Cubo15 #22592
Cubo15's Avatar
Looking at your setup I think you're going to be allright without a high pass but I can't guarantee it. You can put the chance in your favour by avoiding feedback (i.e. from turntables) and making sure that the music doesn't contain any (wanted or non-wanted) very low frequency content. Still, would look for a high pass in the future as it gets you more bass.

Best regards

Cubo
Posted: 1 week 6 days ago by zaxder #22565
zaxder's Avatar
Hi.
I have recently built a Cubo 15, which is my first speaker build, but I'm a bit worried about the filtering.

I'm using the Pioneer GMD-8604 to power my Cubo 15 loaded with Kappa 15LFA, as well as to power my tops. It delivers about 300 watts to the cubo, but here is my problem. I only have the option of either using a HPF OR a LPF to filter it. Of course I chose to use a LPF at around 115 Hz, but my concern is, if the Cubo is able to handle all the low frequencies, which I can't filter? ¨

Am I alright without a HPF, or what do I do?

Ps. It's for a festival setup :-)
Posted: 1 month 1 week ago by Cubo15 #22514
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I've got one Cubo 15 here with the exact same color scheme. What driver is in there?

Best regards

Cubo
Posted: 1 month 2 weeks ago by Watson #22509
Watson's Avatar
Just finished my first Cubo 15 ext. I'm going to add the bracing at the mouth after doing some router work on the braces.

imgur.com/S4czcaY,cDS1oW6,pAd91JI#0
Posted: 1 month 2 weeks ago by bgrade #22502
bgrade's Avatar
If you right click on the image, you should be able to "save image as" to your hard drive. Alternately you can open image in another window or tab and you can zoom. (At least that works for me on my comp using Chrome)

edit: oops never mind. Missed the final page where it was already sorted by maestro Cubo. :)
Posted: 1 month 2 weeks ago by zkralj88 #22501
zkralj88's Avatar
Hi!

Believe me, live drums and bass also go to overkill on a more then few occasions! :)

Could you be so kind as to send me an extra extended plans?

Thank you for your help!

Cheers

Zoran
Posted: 1 month 2 weeks ago by Cubo15 #22500
Cubo15's Avatar
@Zoran: The 18PZB100 in Extended would be my first choice but then again that would be a bit overkill and perhaps more suited for heavy drum and bass nights, etc.

The 15PZB100 in Extended or better Extra Extended is a good choice. It's got a 4" VC versus a 3" VC for the Kappa, so higher power handling and lower power compression. A very good driver for your requirements, a single Cubo 15 Extra Extended loaded with a 500 - 1000 W amplifier would do.

As an estimate: 18PZB100; 35 - 100 Hz, 15PZB100; 40 - 100 Hz.

@Robbie: Done.

Best regards

Cubo
Posted: 1 month 3 weeks ago by robbie4448 #22497
robbie4448's Avatar
Having trouble downloading the blue prints . can u e-mail them to me in standard.Thanks. This email address is being protected from spambots. You need JavaScript enabled to view it.
Posted: 1 month 3 weeks ago by zkralj88 #22492
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Hi Cubo!

Can you please tell me how would B&C 15PZB100 fit in the cubo design?

www.bcspeakers.com/products/lf-driver/15-0/15pzb100

If it's usable which would be better, regular or extended, and how is it against Kappa Pro LF2?
It would be used by a live band in a small venues up to 100 peeps max under a 300W mid top,
with all of the band and speaker DSP processing required.

Also 18PZB100, for the cubo18?

www.bcspeakers.com/products/lf-driver/18-0/18pzb100

Thanks a lot!

Cheers

Zoran
Posted: 2 months 2 weeks ago by Cubo15 #22396
Cubo15's Avatar
20 mm off the allround dimensions turns a 238.4 liter cabinet into a 216 liter cabinet, that's close to 10% difference. I once made a Cubo at 57 cm allround dimensions and didn't like it, like the original. Reducing only the width of the cabinet has more favourable outcome. I even know of people that have reduced the width to 50 cm (and they seem happy with the results).

Best regards

Cubo
Posted: 2 months 3 weeks ago by senoj semaj #22388
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Hi, will 20mm off the all round cubo dimensions make much difference to the overall performance?
Posted: 3 months 1 day ago by Cubo15 #22353
Cubo15's Avatar
That does look good, enough for Cubo Kick aswell ;)

Best regards

Cubo
Posted: 3 months 2 days ago by anjmoor #22342
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Having Built my Cubo 15's probably 2 years ago I have relented from spending the money to buy good grills for them so imagine my delight when a customer asked me to remove these lovely window grills from their property,, 7 of them :) :)
photo1.jpg


photo2.jpg
Posted: 3 months 3 weeks ago by Cubo15 #22275
Cubo15's Avatar
hi how does da 15xb sound inda cubo 15???
I would suspect it to sound similar to the Kappa Pro 15LF but take more power. It's advertised as a warm sounding speaker.
Which way is best to turn the speaker?? Some turns the cone out of the box and some turns it in to the box.
That depends on the listening crowd and the specific driver. As you're the likely listener it couldn't hurt to try both way's and decide which way sounds best to you.

When it comes to the driver, is it too late to talk you out of using the Alpha? I suspect it to work although being (truely) one-note-ish. Also that price seems be at least twice what I would expect to pay over here. That's a lot of money for a driver with a smaller magnet then most passive radiators.
All kidding aside, if you haven't bought it yet, look for a different driver. However if you already have it, I would like to hear your opinion about it's performance, as I've never tested a driver with such a high Qts in any Cubo cabinet.
I got some problems with crossovers. Because i want to make one for my cubo 15
Best thing would be to go active when it comes to the crossover as a passive crossover will cost you output-wise. It also usually allows the use of a high pass filter, that (when picked correctly) will up the output even more. I think the total output could easily be 5 dB or more when using a active crossover (and high pass).

Best regards

Cubo
Posted: 3 months 3 weeks ago by Thecaba100 #22264
Thecaba100's Avatar
Hello i want to ask you some questions about the Cubo 15.

1. witch way is best to turn the speaker?? Some turns the cone out of the box and some turns it in to the box.

2. I got some problems with crossovers. Because i want to make one for my cubo 15

I am using following link speaker for my cubo :) If you got time for a drawing of how it is put together it would be awesome.

(speaker link) www.elextra.dk/main.aspx?page=article&artno=H19508

Hope you are able to help.
Posted: 4 months 16 hours ago by Nitesh #22259
Nitesh's Avatar
hi how does da 15xb sound inda cubo 15???
Posted: 4 months 2 days ago by Nitesh #22246
Nitesh's Avatar
ok coolman ...please let me knw how its sound coz i want to put my 15xbs indat box ...i hope da 15xbs sound better than da scoops ..i lyk this cubo bin its small n its band pass...please let me knw ...thanks man ;)
Posted: 4 months 5 days ago by mini-mad #22238
mini-mad's Avatar
Nitesh wrote:
hi..will the fane coloosus 15 xb run wull in this box...

....well i hope as i have two coming to me in the next few days. im replacing my kappa pro LFs. the kappas are good but im hoping the 15XBs will pound harder.
Posted: 4 months 5 days ago by Nitesh #22237
Nitesh's Avatar
hi..will the fane coloosus 15 xb run wull in this box...
Posted: 4 months 3 weeks ago by Cubo15 #22116
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A 62 cm wide, 62 cm deep and X cm high would be fantastic!
Send me an e-mail at This email address is being protected from spambots. You need JavaScript enabled to view it. and I'll help you from there.

Best regards

Cubo
Posted: 4 months 3 weeks ago by DjMattiB #22106
DjMattiB's Avatar
I too am interested in a Cubo Kick!! Id prefer the smaller version you were discribing Mr Cubo!! Thanks in advance and for everything you have done for us!!!!!

P.s. I did send you an email asking about this as well. :silly:
Posted: 4 months 3 weeks ago by easy my youth #22105
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Looking for cubo 15 kick plan. Repeat cubo 15 KICK, google search doesn't turn up any info. Thanxx !
Posted: 5 months 4 days ago by bjm362 #22070
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Great Pics BEE! Very clear !