Free Speaker Plans

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 12 hours ago by Nitesh #22259
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hi how does da 15xb sound inda cubo 15???
Posted: 4 days 6 hours ago by Nitesh #22246
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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: 1 week 3 hours ago by mini-mad #22238
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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: 1 week 5 hours ago by Nitesh #22237
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hi..will the fane coloosus 15 xb run wull in this box...
Posted: 3 weeks 5 days 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 weeks 3 hours ago by DjMattiB #22106
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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 weeks 10 hours 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: 1 month 6 days ago by bjm362 #22070
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Great Pics BEE! Very clear !
Posted: 1 month 6 days ago by bee #22068
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they sit at the back of the cab, as a brace...



Posted: 1 month 6 days ago by vesthardt #22067
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I must be missing something. How am i supposed to know where to put the triangular pieces in the cab? Sorry for the lame question :p
Posted: 1 month 1 week ago by Cubo15 #22040
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Typical, I design a kick-bin that's (HxWxD) 62 x 62 x 62 cm and one that's 45 x 45 x 50 cm and you want one that's X x 62 x 62 cm's ;)

I managed to make the last version look neat as well, so send me an e-mail @ questionsaboutcubo.at.gmail.com and we'll take it from there. Wait a few months and perhaps a member of this forum has build and tested one.

Best regards

Cubo
Posted: 1 month 2 weeks ago by KTO #22031
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Cubo15 wrote:
If you're either looking for a kick cabinet the exact same size as a Cubo 15 or pretty much the same size as a Cubo 12, I'll probably be able to help you. If you´re looking for a kick cabinet that is 62 cm wide, 62 cm deep and X cm high, I might be able to help you.

Best regards

Cubo

A 62 cm wide, 62 cm deep and X cm high would be fantastic!
Posted: 1 month 2 weeks ago by Cubo15 #22027
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If you're either looking for a kick cabinet the exact same size as a Cubo 15 or pretty much the same size as a Cubo 12, I'll probably be able to help you. If you´re looking for a kick cabinet that is 62 cm wide, 62 cm deep and X cm high, I might be able to help you.

Best regards

Cubo
Posted: 1 month 2 weeks ago by KTO #22014
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Cubo15 wrote:
@Mini-Mad: Kick is covered by 80 - 300 Hz, so a Cubo 15 covers only a small fraction of the kick, hence you might be looking at the wrong place.

Is it possible to design a small kick bin the same footprint of the cubo15 that would sit atop it nicely? Possibly a HD15 placed on it's side?
Posted: 2 months 3 weeks ago by Cubo15 #21939
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@Mini-Mad: Kick is covered by 80 - 300 Hz, so a Cubo 15 covers only a small fraction of the kick, hence you might be looking at the wrong place. That being said, strong output @ 118 - 125 Hz will emphasize kick to the chest, which in most cases would mean EQ your tops 3 - 5 dB or so. A high EBP, low Qts driver, with medium Vas driver would also emphasize the lower kick frequencies.

@Cees: It's a good driver and all T/S-parameters are fine, except Xmax (which is tiny) and would limit power handling to 200 - 300 W. It would be a great candidate however for a kick-bin or a top cabinet.

@Johan: I've got good experiences with the Kappa 15LF, however the Fane looks to be (a fraction of) a fraction better.

Best regards

Cubo
Posted: 2 months 4 weeks ago by johangastorp #21917
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Kappa 15lf or fane sovereign PRO 15-600lf for the extended Box? Same price on the driveris.

Best regards Johan
Posted: 3 months 7 hours ago by cvbaudio #21902
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Dear Cubo

I'm new at the forum

I have 4 P-AUDIO SN15MB

MID BASS WOOFER
Size (in.) 15.0
Power RMS (Watts) 300
Fs (Hz) 47.0
Xmax (mm) 3.5
Sensitivity 1w/1m (dB) 100
Qts 0.26
Vas (lt) 176.75

I would like to use them in the cubo 15
Is this good choice ?
Posted: 3 months 1 day ago by mini-mad #21900
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Thank you dear sir. And thank you again for such a great design!

Quick question.... is there a way to EQ a little kick into this box?
Posted: 3 months 2 days ago by Cubo15 #21872
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As it's quite an efficient driver it wouldn't be a waste. Just make sure you either use it in Cubo 15 Extended, with the magnet inside the chamber (not in the horn) or in Cubo 15 Extra Extended (e-mail me at questionsaboutcubo(at)gmail.com for the plan).

@t.geessounds and mini-mad: Well done, those look like textbook examples.

Best regards

Cubo
Posted: 3 months 2 days ago by xqzme #21870
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Hello Cubo

I love your design, and I really hope that I soon get my own made, but theres a problme!

I bought some badass units (i think at least!), because I got a offer I could not refuse.
At first glance I thought they looked perfect for the Cubo, but then I saw that the Vas is too low.... and I can't really assess what it effects, and which impact it will make, now that the rest of the specifications fit ...

Would it be a waste, to make 2 x cubo15 out these drivers?

RCF L15P540:
8 Ω
Program Power:1000 W AES
Power handling capacity:500 W AES
Sensitivity:98 dB
Frequency Range:40 Hz ÷ 2000 Hz
Effective Piston Diameter:330 / 13 mm/inch
Max Excursion Before Damage (peak to peak):36 / 1.4 mm/inch
Minimum Impedance:6.8 Ω
Voice Coil Diameter:76 / 3 mm/inch
Resonance frequency:50 Hz
DC resistance:5.6Ω
Mechanical factor:9.7
Electrical factor:0.41
Total factor:0.39
BL Factor:21.4 T · m
Effective Moving Mass:106 g
Equivalent Cas air load:100 liters
Effettive piston area:0.085 m²
Max. linear excursion (mathematical):6.5 mm
Voice - coil inductance @ 1kHz:1.5 mH
Half-space efficiency:2.94%

Full specs in the attachment
Posted: 3 months 1 week ago by mini-mad #21865
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Here are 2 of my 4 boxes... kappa LF loaded. I had them built for my daughters 18th and i ha e to say they sounded brilliant, even just two of them!!

Thanks again Mr Cubo!!
Posted: 3 months 1 week ago by t.geessounds #21864
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just finish 2
thanks
Cubo
Posted: 3 months 2 weeks ago by mini-mad #21862
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Thank you again.... i always look forward to reading your posts on here as your a very helpful man and have a vast knowlegde wen it comes to your boxes and driver. Again, i cant thank you enough!

I'll get a set of 15XS's as my matrix amp does 4x 1200 @4ohm... so maybe i'll get the 4ohm versions (not bothered about resale prices)
Posted: 3 months 2 weeks ago by Cubo15 #21861
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How much power do you have available? If you can give this driver 1000 - 1500 W and high pass it lowish, yes, this is the driver for you. It would be more subby.
This is what I tell you based upon my personal experience.
Seriously I'm looking in the pdf's just like you could ;)
This is what I tell you in a response to:
the reason i ask you is that you prob have the baskests knocking around to know the answer to this.... i know you said the stud pattern was the same for the kappa LFpro as with the fane 15XB.... would the 15XS also be the same

Best regards
Posted: 3 months 2 weeks ago by mini-mad #21860
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I understand the paper work but im asking what your EARs tell you as i have paper work that says my car can do 127mph... but it never will...
So im asking your judgement and im very happy to hear the verdict. Thank you