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BMS 12n630 box with pics

Printed From: Speakerplans.com
Category: Plans
Forum Name: Ported Enclosures
Forum Description: Post all your reflex and bandpass and 'other' boxes with holes in stuff here...
URL: http://forum.speakerplans.com/forum_posts.asp?TID=98093
Printed Date: 27 May 2017 at 10:59am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com


Topic: BMS 12n630 box with pics
Posted By: 0krizia
Subject: BMS 12n630 box with pics
Date Posted: 19 March 2017 at 11:58am


Finaly after multiple designs i have made a enclosure that sounded like i wanted it with next to no eq in half space. The driver is BMS 12n630 (heard alot of good things about it in this forum) and the box is 60L with 33hz tuning. The goal was to build a subwoofer box that was lightweigth and that has a practical size + low frequency response. I found 60L to be a sweetspot in size, building any smaller will not be more practical it would just go on the expense of frequency response and/or SPL. 
The tuning was set to 33 hz since thats the lowest tuning i could posibly get with a 4" aerobic port given that i wanted the box to be tall enough to not having to bend down to much to pick it up. with this port it can play a pure 33hz tone at full power with next to no shuffing so there is no unwanted noice at all from this box. 
The total weight of the box is ridiculously 12.5kg. 

This box is no SPL monster but it does play more than loud enough for my use, i have achieved 113Decibel with it outside even with a 6db boost at 31.5hz for extra bottom. soundquality wise i have gotten many compliments,
and i am pleased my self. This driver is the best performing driver i have owned so far.
here is some pictures.









Replies:
Posted By: mini-mad
Date Posted: 19 March 2017 at 1:49pm
My i be as so bold as to ask to zee your design? I have said driver and wouldnt mind hitting some wood now the weather is getting better....

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If it sounds like a gorilla is trying to escape, turn it down.


Posted By: Thomas Hosker
Date Posted: 19 March 2017 at 6:28pm
Nice work, i really love this driver!


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WWW.T8Audio.Com


Posted By: 0krizia
Date Posted: 19 March 2017 at 9:57pm
I don't have any drawings but I can send you the measurements of the plates and a description when I get time mini-mad (^^)


Posted By: 0krizia
Date Posted: 19 March 2017 at 10:04pm
I have had this driver for 2.5 years now and I have achived better sound quality with this driver in a proper box than my old Martin audio ws218x subs.
Can't go wrong with them.


Posted By: I-shen Soundboy
Date Posted: 19 March 2017 at 11:29pm
I have both the 12n630 and it's bigger brother (15n630) in Tony W's Q12 and Q15. I barely use the Q12 anymore as the Q15 is considerably louder, but I'm considering options for the 12N630 (probably involving a second driver...).
Tony did design a double 12" which looked gorgeous, but your 60l box is a real treat and looks like it might get more SPL out of this driver than the absurdly small Q12.


Edit: Nice decking. 😋


Posted By: bee
Date Posted: 20 March 2017 at 12:11am
I made an updated version to the original q12 the q12fp, and a double version q212fp.
 
http://s280.photobucket.com/user/djbenwells/media/DSC_0552_zpsiqf3gph9.jpg.html" rel="nofollow">
 
http://s280.photobucket.com/user/djbenwells/media/15356673_1664097510282453_6041366040917406150_n_zpsm6l0xmc4.jpg.html" rel="nofollow">
 
the first of the fp range was the q18fp, this was the last project myself and Tony worked on before his sad passing.


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https://www.elements-audio.com


Posted By: I-shen Soundboy
Date Posted: 20 March 2017 at 12:29am
And an excellent development they appear to be too.
Did Tony abandon the rear-porting for the Q18 (and you for your fb range) for any particular reason? The rear port on the original Q12 was a very neat arrangement. Later models (Q15/early Q18) resorted to multiple rear ports, but by the later Q18/Q21 models I've see the ports were on the front...


Posted By: 0krizia
Date Posted: 20 March 2017 at 7:44am
Originally posted by I-shen Soundboy I-shen Soundboy wrote:

I have both the 12n630 and it's bigger brother (15n630) in Tony W's Q12 and Q15. I barely use the Q12 anymore as the Q15 is considerably louder, but I'm considering options for the 12N630 (probably involving a second driver...).
Tony did design a double 12" which looked gorgeous, but your 60l box is a real treat and looks like it might get more SPL out of this driver than the absurdly small Q12.


Edit: Nice decking. 😋

Tony W`s q12 will probably play louder, size is not always a indicator of SPL, but ulike the Q12 that has a 45hz tuning and a frequency response down to 42hz - 3db and 38hz -6db or so, this box plays straigt down to 33hz -3db and 26hz - 10db. No lows will be missed with this box and that make a big diffrence in the music experience, esp in some music genres.


Posted By: 0krizia
Date Posted: 20 March 2017 at 7:56am
Originally posted by bee bee wrote:

I made an updated version to the original q12 the q12fp, and a double version q212fp.
 
http://s280.photobucket.com/user/djbenwells/media/DSC_0552_zpsiqf3gph9.jpg.html" rel="nofollow">
 
http://s280.photobucket.com/user/djbenwells/media/15356673_1664097510282453_6041366040917406150_n_zpsm6l0xmc4.jpg.html" rel="nofollow">
 
the first of the fp range was the q18fp, this was the last project myself and Tony worked on before his sad passing.

Looks nice Bee. Is there any benefit of having these intead of some 18"s ?


Posted By: cravings
Date Posted: 20 March 2017 at 8:28am
is that a floodlight on top? do these double twelves play all the way down, and all the way up to 180 nicely? i suppose they should.


Posted By: 0krizia
Date Posted: 20 March 2017 at 8:28am
Originally posted by mini-mad mini-mad wrote:

My i be as so bold as to ask to zee your design? I have said driver and wouldnt mind hitting some wood now the weather is getting better....

External size 
50cm deep
37cm wide
48cm high

plate dimentions.
2x 37cm 50cm
2x 50cm 48cm
2x 34cm 45cm 

The port is a aerobic 4" with a total lenght of 34cm  


The build is simple, all you need is to assemble 6 plates
and paint it. The port is in the bottom in back in order to get space for it and 
the driver is on the top in the front. 
The front plate is 4cm inwards to give space for the driver exution and the grill.

The front grill was ordered custom made from http://www.speakergrills.co.uk/" rel="nofollow - http://www.speakergrills.co.uk/ .
Once i ordered it i was sceptical and did not expect much if anything,
but the grill they delivered was truly of high quality.
As a nice finish on the grill i added a foam on the inside. 


Posted By: spongebob
Date Posted: 20 March 2017 at 8:49am
It's no wonder the grills were great, member Markie from this forum made them :)


Posted By: bee
Date Posted: 20 March 2017 at 9:01am
the fp range was me playing with ideas, and Tony was happy with the changes, he also added a lot of input to the project. The only q to be front ported was the 18, he had plans to do a 21" front ported but this ended up as rear ported. This was done for another forum member.

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https://www.elements-audio.com


Posted By: bee
Date Posted: 20 March 2017 at 9:04am
Originally posted by cravings cravings wrote:

is that a floodlight on top? do these double twelves play all the way down, and all the way up to 180 nicely? i suppose they should.
 
very good spot, yes 2 floods per stack, we also had 6 21" reflex arrayed under the catwalk, in an endfire configuration.
 
the double 12" play nice down to 35hz and had no trouble playing up to meet the floods. Sounded very sweet. If anything we should of taken more floods to keep up..


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https://www.elements-audio.com


Posted By: cravings
Date Posted: 20 March 2017 at 10:32am
that's quite a big system. what was the venue size / crowd size, out of curiosity.


Posted By: bee
Date Posted: 20 March 2017 at 10:45am

it was porchester hall London. Ill post up a video... we were metered as being louder than dizzy rascal the week before lol...



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https://www.elements-audio.com


Posted By: bee
Date Posted: 20 March 2017 at 12:08pm


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https://www.elements-audio.com


Posted By: JonB67
Date Posted: 20 March 2017 at 11:18pm
Not criticising just asking for educational purposes... Isn't 33hz very low to tune a box like that?

What's the compromise there?


Posted By: bee
Date Posted: 20 March 2017 at 11:42pm
spl.

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https://www.elements-audio.com


Posted By: 0krizia
Date Posted: 22 March 2017 at 2:05pm
Originally posted by JonB67 JonB67 wrote:

Not criticising just asking for educational purposes... Isn't 33hz very low to tune a box like that?

What's the compromise there?


As bee mention, it goes on the expense of soundpresure, but the gain is a frequency response close to the L-acoustics KS28 and Meyer Sound LFC1100 subwoofer. It makes the sound experience way better and bigger than a typical PA sub


Posted By: bee
Date Posted: 22 March 2017 at 5:05pm
the added bonus is if you need more spl take more boxes...

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https://www.elements-audio.com



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