Frequency: 80Hz to 180+Hz
Enclosure Type: Banpbass horn
Size: 78 x 60 x 78 cm
Recommended Driver: MB12G301 Spec Sheet
Plan:
MKH-230 (red) vs HD215 (black):
Designer:
Discuss this article
![](https://freespeakerplans.com/images/comprofiler/19597_53afd38fd2f95.png)
![;-) ;-)](/media/kunena/emoticons/14.png)
I've found the overall dimensions and shape of the MKH230 more difficult to handle and set up with my current system
![](https://freespeakerplans.com/images/comprofiler/1610_4cbb6a92a5d45.png)
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I was wondering if anyone have used an alternative driver for the MKH230 ...plans recommend the RCF MB12G301 which is the one I have ordered but I have just been informed by the seller that it has a 6 weeks delivery time. I was wondering if waiting on looking for an alternative ....maybe someone has tried and tested some other drivers that I can consider as optional.
Speaker plans seems to be designed around the RCF from a chassis point of view too so it may be hard to find another good fit , but maybe...
thanks !
![](https://freespeakerplans.com/images/comprofiler/19597_53afd38fd2f95.png)
thanks for the quick reply, I'll follow the advice then...
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thanks for the reply as always...I missed it for a bit , I usually get a notification on my email but I may have missed that as well
![:-/ :-/](/irritated.gif)
In the meantime I move forward with the project and I did as you them mentioned in your reply. I'm half way through the building on one MKH230....funny part is that you realized the size of these boxes once you start building them, which is why I really like all the cubos design, compact and strong.
I ended up using a 18mm plywood even if it's a single driver design, I think I could have gone with the 15mm and have a lighter box but when I redesigned it to cut the pieces on a CNC the 3 mm change was messing a bit with angles and mitred cut so instead of recalcualting everything I went the easier route and kept it 18mm...
now I have another point to consider, Have anyone used sound dampening material on the inner walls of this speaker ? I did used it on Cubo Kick 12" and I think it helped the overall sound I was wondering if I should do the same before I complete it....
if so, should the dampening material be applied on the inner walls around the driver and also in front of it ? Trying to avoid to put it in areas where it will be visible from the outside for cosmetic reasons.
Attached a quick sketch about where I'm thinking to apply it shown as red rectangles
thanks !!
![](https://freespeakerplans.com/images/comprofiler/1610_4cbb6a92a5d45.png)
![;) ;)](/media/kunena/emoticons/11.png)
How's your French? Single MKH-230
![](https://freespeakerplans.com/images/comprofiler/19597_53afd38fd2f95.png)
posting here something about the MKH230 design although the plans on the website for this design doesn't look like the MKH230 by Marco.O available on his profile in Hornsplan website.
MKB230 and MKH230 have the same plans here on Freespeakerplans but they are not, looks like someone has pointed this out already anyway
.I've been thinking about building some bass kick speakers based on the MKH230 model.Originally a double 12" box I'm looking at modifying the design to be used with a single 12" driver.
Still using a set of two speakers.It will be easier and lighter to move around than the version with double driver.
These are the main reasons why I'm looking at doing this and transportation with my current capabilities.
I'm currently using a custom built soundsystem playing Jamaican music from ska to roots on vinyl records.
The stack is made of 4 Cubo12" stacked on top of each other in set of two speakers per row. Over these I'm now using 2 Cubo Kick12" and 2 b&c design mid tops with 1 12" driver and 1" compression driver horn.
I've been quite happy with the overall sound so far, we play in small to medium spaces ( pub/bar type of room ) and most of times have to keep the sound to half of it's potential.
The MKH230 will replace the Cubo kicks, not because I'm not happy with them but mostly bcs I want to experiment more and build some different design..Anyone has done any mod like that to the MKH230 ?
I basically have moved the side wall of the double MKH230 to the center of the baffle panel ( where the bracing piece is on the original design ) then moved the bracing panel in the center between left and right sidewall. ( see below image for a quick visual reference on the sketch up model of the MKH230 )I'm thinking of adding an horizontal bracing as well in the middle of the vertical bracing just for the look of it ( thinking of giving a contoured profile to the bracing rather than the current plan where the panel is just straight) ....bad idea ?
Also...anyone using this kicks can spare some feedback ?
Looking at future expansion of this sound this choice may not be the wiser as I will have 4 kicks with 2 different design so not the best idea to use them all 4 together in a bigger set up but I guess that when I'll go that route I may look into using different bass speakers ( super scoops most likely ) and then design the kick section around those
thanks !
![](https://freespeakerplans.com/images/comprofiler/0_4bb5a0d6957bf.jpg)
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If you really want to go with a premade plan, you could try making a full range cab like a DM2 www.speakerplans.com/index.php?id=dm2 . It would go higher than needed but I bet it would sound awesome for a bass cab.
![](https://freespeakerplans.com/images/comprofiler/15420_50e7333eb53eb.jpg)
![](https://freespeakerplans.com/images/comprofiler/15028_52cd9ba44e930.jpg)
Personally I would go with a nice two or three way reflex box.
![](https://freespeakerplans.com/images/comprofiler/15420_50e7333eb53eb.jpg)
They look like the same plans.
Any other suggestions for a large bandwidth horn?
Any other suggestions for bass guitar speaker cabinet?
Bandwidth of bass guitar is 329.63 to 1108.73 Hz
Frequency: 40Hz - 140 Hz [F3=44hz (one box) / F3=40Hz (4 boxes)]
Enclosure Type: Ported horn
Size: 125 x 51 x 75 cm
Recommended Driver: LF18G401 Spec Sheet
Plan: MTB 246
MTB-246 (red) vs F218 (black):
Designer:
Discuss this article
![](https://freespeakerplans.com/images/comprofiler/0_4f3f92d825e18.jpg)
![](https://freespeakerplans.com/images/comprofiler/22132_56410efdb0ca6.jpg)
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![](https://freespeakerplans.com/images/comprofiler/66_4beffd6e21fd2.jpg)
![:) :)](/media/kunena/emoticons/8.png)
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Frequency: F3= 49Hz -3dB with 1 box, 42Hz -3dB with 4 boxes
Efficiency: 1box 1w1m 2Pi (2.83volts) = 104db
Enclosure Type: Tapped Horn
Size: 92x56x80cm
Recommended driver: THE BOX SPEAKER 18-500/8-A from Thomann
Response:
Plan: MTH-46LC
Pictures:
Designer:
Discuss this article
![](https://freespeakerplans.com/images/comprofiler/21202_550fee63b1673.gif)
www.bcspeakers.com/products/lf-driver/18-0/8/18nw100
Can anyone please advise me on whether these are suitable for the MTH-46lc and how they would respond in terms of low end extension and sensitivity.
Could I expect a noticeable improvement over THE BOX SPEAKER 18-500/8-A
www.thomann.de/gb/the_box_speaker_185008a.htm
![](https://freespeakerplans.com/images/comprofiler/6053_4ece66e9a5fa3.gif)
www.paudiothailand.com/pdf/products/E15-300S1.pdf
![](https://freespeakerplans.com/images/comprofiler/66_4beffd6e21fd2.jpg)
Yes I have corrected the plan, thank youbee wrote: width 923mm, height 570mm, depth 806mm........... i guess.....
![;) ;)](/media/kunena/emoticons/11.png)
![](https://freespeakerplans.com/images/comprofiler/66_4beffd6e21fd2.jpg)
Here is the pdf in attachmentel_dj wrote: Wow... nice.. where did you get the ts data for the speaker from... test it yourself??
![;) ;)](/media/kunena/emoticons/11.png)
[attachment=0:3tuj2fkb]<!-- ia0 -->The.Box 18-500-8a.pdf<!-- ia0 -->[/attachment:3tuj2fkb]
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i would say internal width 52.4cm, external width 56cm means the thickness of the sides is 3.5 cm this would mean 17.5mm ply is used!!!!!!!! i think external should be 57cm..............
![](https://freespeakerplans.com/images/comprofiler/gallery/butterfly.gif)
![](/images/cubosub(small).jpg)
Frequency: from 38Hz up to 120 in singles or about 200Hz when stacked
Enclosure Type: Tapped Horn
Size: 100x70x57.2cm
Recommended Driver: Bms 15n850 T.data, 15TBX100, 15NLW9400, 15P1200Nd, LF15N401 Spec Sheet or PD1550
Plan: Apache H15 / APACHE H15 MkIV SUBWOOFER
Designer:
Discuss this article
![](https://freespeakerplans.com/images/comprofiler/28951_60b154bc19cd7.jpg)
![](https://freespeakerplans.com/images/comprofiler/21390_554b69ad6013e.jpg)
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many of you have loudspeakers with sufficient motors and magnetic strength to shove large cones around under compression in these folded bass horns, but many of you know (and have experienced), that some stronger motor strength speakers have the ability to "envelope" their cones under high internal pressures, our else flex, causing all sorts of distortions that you hear.....
The reason I am taking the time to contact you, is that I have a TON of OEM cone assemblies that were manufactured for some of the more famous names that you know, mainly for their high end speakers that cost hundred, almost a thousand dollars, and who can afford multiples of those???
welp, I have the CONE ASSEMBLIES available if anyone wants to take their existing frames, and install ultra stiff, ultra accurate high end cones in their speakers.... Contact me here or at pmreproductions@neo.rr.com if interested... I can help!!!
sincerely,-
jason tice/PMR
![](https://freespeakerplans.com/images/comprofiler/14835_4ff30ce1374a3.jpg)
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![](/images/stories/cubo18(small).png)
3D Model (by K-M-Sound-System):
Cubo 18 Rebated 6mm:
https://3dwarehouse.sketchup.com/embed.html?mid=ud6197c05-9549-4e66-9c21-453c31dafed8
Cubo 18 Extended Rebated 6mm:
https://3dwarehouse.sketchup.com/embed.html?mid=ue3b3d275-0cb8-49e0-b0cb-be15c894d08a
![alt](/images/stories/Picture 1.jpg)
![alt](/images/stories/Picture 2 Without Side Panel.jpg)
![alt](/images/stories/Picture 3 Studio.jpg)
![alt](/images/stories/Picture 4 Studio.jpg)
![alt](/images/stories/Picture 5.jpg)
![alt](/images/stories/Picture 6.jpg)
![alt](/images/stories/Cubo 18 Measurements(1).png)
Discuss this article
![](https://freespeakerplans.com/images/comprofiler/28951_60b154bc19cd7.jpg)
![](https://freespeakerplans.com/images/comprofiler/28951_60b154bc19cd7.jpg)
Would it be a good idea to put the PDN.18BR40 speaker in the cubo18 box? I have two lying around at home...
If so, extended or normal version? I seem to remember that I quickly reached the xmax in BR
![](https://freespeakerplans.com/images/comprofiler/1610_4cbb6a92a5d45.png)
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Are there drivers that deliver similarly good results, and maybe even be neodymium-loaded in the best case?
Im located in Germany.
![](https://freespeakerplans.com/images/comprofiler/1610_4cbb6a92a5d45.png)
@DevFelix: Drivers like the V18-1000 are not very common and tend to be expensive as well (large voice coil and low Qts do that to any driver). The V18-1000 was basically a cheaper alternative for the PD.1850. Non- neodymium drivers like that are a b!tch to move though, you need to be in great shape to not mind.
Where are you located?
![](https://freespeakerplans.com/images/comprofiler/29276_63efa22d27ae5.png)
great design!
The Gain SPL Diagram clearly shows that the case works very well together with the V18-1000.
Unfortunately, it is only available to a limited extent in my region. Is there a good alternative?
Greetings
![](https://freespeakerplans.com/images/comprofiler/1610_4cbb6a92a5d45.png)
![](https://freespeakerplans.com/images/comprofiler/29027_61538871854ec.jpg)
would it be a good idea to put the Eminence Sigma Pro-18A-2 speaker in the cubo18 box?
![](https://freespeakerplans.com/images/comprofiler/1610_4cbb6a92a5d45.png)
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It does work best in Cubo 18 Extended, if you need help with making changes so it fits, send me an e-mail at: questionsaboutcubo at gmail dot com
Cubo
![](https://freespeakerplans.com/images/comprofiler/29088_61d8451c169c8.jpg)
Thx
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@Jack: The 18NLW9400 is the 18Sound equivalent of the B&C 18NW100, both rated at 1200 W AES, it would be my choice with an amplifier of roughly 1200 W or less. The 18TLW3000 is a very high power driver, with the 4 Ohm version looking best (better than the 8 Ohm version), it's a good choice if you have around 1800 W or more to power it with.
Cubo
So after faffing around for too long I missed the boat on the 18nw100 availability and they're now on back order for at least 80 days from one of the few places that ship to NZ
![:-S :-S](/worry.gif)
![](https://freespeakerplans.com/images/comprofiler/29077_61b442b61b474.jpg)
Trying to build the cubo18 not sure which of the two I should build
the drivers in my price range and in stock are
JBL. 18SWS1000
SWLENIUM 18SWS1000
CELESTION FTR18-4080FD
EMINENCE KAPA PRO
CELESTIOR. CF1830E
![](https://freespeakerplans.com/images/comprofiler/25674_59b5c2470a974.jpg)
![](https://freespeakerplans.com/images/comprofiler/1610_4cbb6a92a5d45.png)
The 18NLW2400 is an 18 inch extended low frequency loudspeaker designed for high SPL subwoofer applications in either a reflex, bandpass or horn loaded configuration. Compared to our industry standard 18LW1400, the 18LW9400 provides higher maximum SPL, increased program power handling and lower power compression. In order to furtherly increase power handling and reduce power compression figure, 18NLW9400 uses the same voice coil ventilation technology developed for our flagship 9000 neodymium transducer series.
Apparently, they couldn't choose it's final name then. Now it's known as the 18NLW9400
Both the Ciare Cw455 and the 18NLW9400 will work best in Cubo 18 Extended.
Best regards Cubo
![](https://freespeakerplans.com/images/comprofiler/25674_59b5c2470a974.jpg)
![](https://freespeakerplans.com/images/comprofiler/1610_4cbb6a92a5d45.png)
Those are looking great! All measurement data is welcome.
Cubo
![](https://freespeakerplans.com/images/comprofiler/25758_61600afdd24ac.jpg)
Here's the link: www.audiofotos.eu/album/cubo-18-extended.mxi
![](https://freespeakerplans.com/images/comprofiler/1610_4cbb6a92a5d45.png)
Cubo
![](https://freespeakerplans.com/images/comprofiler/25459_5978cfcc46ac3.jpeg)
Would the Dayton Audio PN470-8 18" NEO work well in the Cubo 18 or the Cubo 18 extended?
www.parts-express.com/Dayton-Audio-PN470...e-Coil-8-Ohm-295-046