OT 12 build in Hungary

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Lustyik
Posts: 76
Joined: Sat Sep 28, 2013 10:54 am
Location: Hungary

OT 12 build in Hungary

#1 Post by Lustyik » Sun Jun 18, 2017 1:22 pm

Hi all,

I built two OT12 (2015; NSD2005).
Here are some pictures.

I have to say BIG thank you for Bill, Grant, Bruce and DJPhatman. If I had any questions, they helped me immdiately


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Attachments
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Bought PU glue are available in EU. After some trial I decided behind Fischer KK. If you are well prepared for fast fixing, KK could save plenty of time, due to quick fixing.
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Last edited by Lustyik on Mon Jun 19, 2017 4:59 am, edited 2 times in total.
Built: 2x OT12 (2512; NSD)
Ongoing: 2x T39 (3012)


PreSonus sl 16.4.2
Driverack PA
Driverack PX
PKN XD2500 (2x650w / 8ohm)
PKN LC4004 (4x500w / 8ohm)

Lustyik
Posts: 76
Joined: Sat Sep 28, 2013 10:54 am
Location: Hungary

Re: OT 12 build in Hungary

#2 Post by Lustyik » Sun Jun 18, 2017 1:26 pm

Some more pictures...
Attachments
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Built: 2x OT12 (2512; NSD)
Ongoing: 2x T39 (3012)


PreSonus sl 16.4.2
Driverack PA
Driverack PX
PKN XD2500 (2x650w / 8ohm)
PKN LC4004 (4x500w / 8ohm)

Lustyik
Posts: 76
Joined: Sat Sep 28, 2013 10:54 am
Location: Hungary

Re: OT 12 build in Hungary

#3 Post by Lustyik » Sun Jun 18, 2017 1:34 pm

...and more...
Attachments
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I did not read the plan carefully, so I had some extra to do...
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Built: 2x OT12 (2512; NSD)
Ongoing: 2x T39 (3012)


PreSonus sl 16.4.2
Driverack PA
Driverack PX
PKN XD2500 (2x650w / 8ohm)
PKN LC4004 (4x500w / 8ohm)

Lustyik
Posts: 76
Joined: Sat Sep 28, 2013 10:54 am
Location: Hungary

Re: OT 12 build in Hungary

#4 Post by Lustyik » Sun Jun 18, 2017 1:39 pm

Close to the end...
Attachments
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IMG_0057.JPG
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FullSizeRender_14.jpg
Built: 2x OT12 (2512; NSD)
Ongoing: 2x T39 (3012)


PreSonus sl 16.4.2
Driverack PA
Driverack PX
PKN XD2500 (2x650w / 8ohm)
PKN LC4004 (4x500w / 8ohm)

Lustyik
Posts: 76
Joined: Sat Sep 28, 2013 10:54 am
Location: Hungary

Re: OT 12 build in Hungary

#5 Post by Lustyik » Sun Jun 18, 2017 2:00 pm

And the FINISH

The entire project started at 13th of May.
I worked on the cabs untill 16th of June.
I worked at weekends only but at least eight houres each day.

That was my first real woodworking project, I did not have any serious woodworking experience before.
I learned a lot during this jurney about woodworking and my nex cabs would be ready much faster.

I was confused a couple of times due to my week english knowledge. I needed more time sometimes, to get real understanding about the next step. Many posts and mainly pictures here, helped me a lot also.

But if I take into consideration all the thinks, like lack of experience and language issue, Bill's plan must be EXCELLENT! It simply WORKS.

Speakers are wery clear and wery loud and wery light as well.
Attachments
FullSizeRender_18.jpg
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Warnex painting with structure roller
Built: 2x OT12 (2512; NSD)
Ongoing: 2x T39 (3012)


PreSonus sl 16.4.2
Driverack PA
Driverack PX
PKN XD2500 (2x650w / 8ohm)
PKN LC4004 (4x500w / 8ohm)

Grant Bunter
Posts: 6088
Joined: Mon Nov 28, 2011 11:12 am
Location: Ilfracombe Queensland Australia
Contact:

Re: OT 12 build in Hungary

#6 Post by Grant Bunter » Sun Jun 18, 2017 3:16 pm

Very nice build and finish!

The dowel in your CD horn doesn't look like it is wide enough (in diameter).
You should replace it with the right diameter dowel.
The purpose of that rod is to make it a diffraction rod, to increase horizontal dispersion...
Built:
DR 250: x 2 (melded array) with March 2012 plans. 2 more under way with CD horn
T39's: 4 x 20" BP102 , 2 x 28" 3012lf.
WH8: x 3 with melded array.
Bunter's Audio and Lighting "like"s would be most appreciated...

Bruce Weldy
Posts: 6673
Joined: Fri Nov 27, 2009 11:37 am
Location: New Braunfels, TX

Re: OT 12 build in Hungary

#7 Post by Bruce Weldy » Sun Jun 18, 2017 3:22 pm

Very, very nice work!

Now, build another pair and really be blown away.

6 - T39 4-25" 2-22" 3012LF
4 - OT12 2512 Melded/NSD2005
1 - T24
2 - XF210


"A system with a few knobs set up by someone who knows what they are doing is always better than one with a lot of knobs set up by someone who doesn't."

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dswpro
Posts: 315
Joined: Sun Oct 30, 2011 3:17 pm

Re: OT 12 build in Hungary

#8 Post by dswpro » Sun Jun 18, 2017 3:43 pm

Awesome! way better than my own builds! : )

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Charles Jenkinson
Posts: 1053
Joined: Sat Aug 06, 2011 3:25 pm
Location: Manchester, UK

Re: OT 12 build in Hungary

#9 Post by Charles Jenkinson » Mon Jun 19, 2017 12:50 am

Nice work. It's fairly obvious that you have a good feel at working with the wood. Well done.
2xJ12L (3012HO) switchable/melded (http://billfitzmaurice.info/forum/viewt ... 30&t=18773)
2xT30 : http://billfitzmaurice.info/forum/viewt ... 30&t=20386

No sound is better than bad sound.

Lustyik
Posts: 76
Joined: Sat Sep 28, 2013 10:54 am
Location: Hungary

Re: OT 12 build in Hungary

#10 Post by Lustyik » Mon Jun 19, 2017 4:55 am

Grant Bunter wrote:Very nice build and finish!

The dowel in your CD horn doesn't look like it is wide enough (in diameter).
You should replace it with the right diameter dowel.
The purpose of that rod is to make it a diffraction rod, to increase horizontal dispersion...

:wall:
Thank you Grant!

You have right. My calculation was wrong. I was (maybe) too tired and finished it after splitted 5/8 (0,6) so I used 6 mm dowel. :mrgreen:
I simply forgot to mutiply it with one inch (5/8 times 25,4 = 15,87mm).

So in this case I can expect even wider dispersion? It is great news.

Thanks again!
Built: 2x OT12 (2512; NSD)
Ongoing: 2x T39 (3012)


PreSonus sl 16.4.2
Driverack PA
Driverack PX
PKN XD2500 (2x650w / 8ohm)
PKN LC4004 (4x500w / 8ohm)

Lustyik
Posts: 76
Joined: Sat Sep 28, 2013 10:54 am
Location: Hungary

Re: OT 12 build in Hungary

#11 Post by Lustyik » Sat Jan 26, 2019 5:46 am

Final pictures with proper size dowel. :)

I have been using this cabs for one and half years. Clear and very nice sound, good feedbacks from audience.
Very easy to carry, even these are not light versions!

OT12s are hunger for four T39 at least. :)
Unfortunately the most of the time there is not enough place to use more than one T39 in the venue where we play.

I guess my next project is Jack.

Excellent design!
Attachments
Omnitop12+T39.JPG
Built: 2x OT12 (2512; NSD)
Ongoing: 2x T39 (3012)


PreSonus sl 16.4.2
Driverack PA
Driverack PX
PKN XD2500 (2x650w / 8ohm)
PKN LC4004 (4x500w / 8ohm)

ACUA
Posts: 344
Joined: Sun Sep 25, 2016 6:21 pm

Re: OT 12 build in Hungary

#12 Post by ACUA » Sat Jan 26, 2019 8:30 am

That looks great. And great build too you make it look easy.
Advanced concepts underground audio

Lustyik
Posts: 76
Joined: Sat Sep 28, 2013 10:54 am
Location: Hungary

Re: OT 12 build in Hungary

#13 Post by Lustyik » Sat Jan 26, 2019 10:42 am

THX ACUA!

Honestly the secret of the success is the solid design and the easy to follow plan.
Even tho I had to recalculate everything to IS. :)
Built: 2x OT12 (2512; NSD)
Ongoing: 2x T39 (3012)


PreSonus sl 16.4.2
Driverack PA
Driverack PX
PKN XD2500 (2x650w / 8ohm)
PKN LC4004 (4x500w / 8ohm)

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