Subwoofer 24" PD.2450 sealed Spain - AVS Forum
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post #1 of 39 Old 09-02-2012, 04:11 AM - Thread Starter
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Hello Members.

Given my love of this world, after much time looking pieces to create a high performance subwoofer, my decision to create the next Subwoofer with the following tools.
Slowly and with the passage of time, I will be showing the processes, the first is that I have a driver who will be the star of such barbarism.

The goal is to match or exceed many of the commercial Subwoofers class ranges stop (not all).
To do this I have to sacrifice size and perhaps not too nice (WAT to cast my hands to his head when he saw that it grew larger and barbaric that the very SVS PC13-Ultra DSP I own).

Another goal is to have fun sharing a bit of my hobby with more people, learning and growing deeper and deeper into this world.

Driver used:

Precision Devices PD2450

http://www.precision-devices.com/asps/uploads/super/17.pdf

Some pictures of the "paella", literally ... biggrin.gif












The project will be developed in a size as compact as possible, as this will seal in Bass reflex runs through my mother and cabinet size is not tolerable in a house or at least in mine.

The initial size was 75 * 75 * 75, but given the width of the doors of my house are 69 cm, I would enter the bucket. I resize and initially will be 80 * 80 * 65.

Continued ...
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post #2 of 39 Old 09-02-2012, 10:41 AM
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Cool woofer! What is your planned enclosure alignment? I'm guessing sealed, do you have eq to boost the low end?
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post #3 of 39 Old 09-02-2012, 11:29 AM
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OMG if you actually make it flush mounted, that basket will suck! LOL
Cool build though, I'll look forward to see how it all turns out.

Blasting brown notes for 10 years and counting!

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post #4 of 39 Old 09-02-2012, 12:03 PM
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When I first saw the driver, I was thinking the EXACT same thing with the cutout.

You'll rarely hear anyone say, "I wish I'd gotten less Sub."

$ubwoofer$ and premium mango tree cultivar$

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post #5 of 39 Old 09-02-2012, 05:19 PM
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Cool driver!
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My Dual 18" LLT subs 120dB down to 10hz

 

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post #6 of 39 Old 09-03-2012, 05:25 AM - Thread Starter
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Quote:
Originally Posted by Jay1 View Post

Cool woofer! What is your planned enclosure alignment? I'm guessing sealed, do you have eq to boost the low end?

Hello,

Exactly, the enclosure will be sealed, its size will be 80 wide x 80 high x 65 long.

The EQ or use the Behringer ULTRACURVE (Normally I use for the front speakers) or MultEQ XT verily with the Onkyo 809 (In my room does a great job).

a hug
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post #7 of 39 Old 09-03-2012, 05:27 AM - Thread Starter
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Quote:
Originally Posted by N8DOGG View Post

OMG if you actually make it flush mounted, that basket will suck! LOL
Cool build though, I'll look forward to see how it all turns out.

: D That's what I'm thinking, between the PC13-Ultra DSP and DIY 24 ", I have to reinforce the house, lol. eek.gif
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post #8 of 39 Old 09-03-2012, 05:30 AM - Thread Starter
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The crazy thing is that all this is in a room of 10 m2. When you finish the DIY 24 ", I have to leave me in the house.

I'm from Spain, so I apologize if sometimes the words do not work well.

A hug.

PS: I hope this week ends Assemblage.
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post #9 of 39 Old 09-03-2012, 07:55 AM
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What's up !!

Can't wait to see the frequency response in your room. This thing must (have to, should) blow the Ultra out.

@All:

Happy to join this reference forum. I know Lecter83 from some other spanish forums. I'm also doing DIY subs, I'll be posting some of them shortly.

Good luck Lecter, keep us posted on the sub's development.
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post #10 of 39 Old 09-03-2012, 09:43 AM
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how can I get one of these drivers in america? holy crap!
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post #11 of 39 Old 09-03-2012, 11:15 AM - Thread Starter
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Quote:
Originally Posted by Rave Cristiano View Post

What's up !!
Can't wait to see the frequency response in your room. This thing must (have to, should) blow the Ultra out.
@All:
Happy to join this reference forum. I know Lecter83 from some other spanish forums. I'm also doing DIY subs, I'll be posting some of them shortly.
Good luck Lecter, keep us posted on the sub's development.

Hello

Nice to see you here too, now two of us in Spanish adventure forum U.S.

It takes me to have finished the project, will soon be operational.

Rave also has its DIY projects, one of them is very nice, a finish that literally has no way inferior to commercial Subwoofers.

a hug
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post #12 of 39 Old 09-03-2012, 11:18 AM - Thread Starter
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Quote:
Originally Posted by whiskey_face View Post

how can I get one of these drivers in america? holy crap!

I really do not know where you can get this model in the U.S.
Here in Europe there are several sites where I can think and distributed as follows:

http://www.thomann.de/es/precision_devices_pd2450.htm

Instead, to me if I would like to be in the U.S. in order to get materials that no distribution here can not have.

Where I can get a JTR Captivator in Europe?

lol

rolleyes.gif
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post #13 of 39 Old 09-07-2012, 02:29 PM
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http://www.youtube.com/watch?v=WW5LK-T3eV0

Can't imagine what 8 of those monsters would be like, let alone 1....biggrin.gif
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post #14 of 39 Old 09-08-2012, 05:08 AM
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Quote:
Originally Posted by Lecter83 View Post

Hello,
Exactly, the enclosure will be sealed, its size will be 80 wide x 80 high x 65 long.
The EQ or use the Behringer ULTRACURVE (Normally I use for the front speakers) or MultEQ XT verily with the Onkyo 809 (In my room does a great job).
a hug


What kind of enclosure are you putting this sub into? I thought you were going with a sonotube? Is that 80 inches x 80 inches x 65 inches? If so, that is going to be a massive subwoofer!
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post #15 of 39 Old 09-08-2012, 09:24 AM
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Want

 

Originally Posted by Bill Fitzmaurice:
It's also the very sort of Voodoo Engineering that should never be done.

 

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post #16 of 39 Old 09-08-2012, 10:55 PM
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Quote:
Originally Posted by Martycool007 View Post

What kind of enclosure are you putting this sub into? I thought you were going with a sonotube? Is that 80 inches x 80 inches x 65 inches? If so, that is going to be a massive subwoofer!

It is in CM, he was talking about how wide his doors are, so he need 65cm to go through. smile.gif
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post #17 of 39 Old 09-10-2012, 05:42 PM - Thread Starter
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Quote:
Originally Posted by Martycool007 View Post

What kind of enclosure are you putting this sub into? I thought you were going with a sonotube? Is that 80 inches x 80 inches x 65 inches? If so, that is going to be a massive subwoofer!

The measurements are in centimeters.
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post #18 of 39 Old 09-10-2012, 05:43 PM - Thread Starter
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Quote:
Originally Posted by ZivkoF View Post

It is in CM, he was talking about how wide his doors are, so he need 65cm to go through. smile.gif

Right now I will upload some pictures of the work that I have done.
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post #19 of 39 Old 09-10-2012, 05:55 PM - Thread Starter
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Here you have some screenshots of the work:

The homemade compass we managed, with some tweaks after completing the cut, all arranged.

20120907105300.jpg

Holes and we enter the world of court.

20120907105631.jpg

Here I am with the "monkey" of Ford, making small incisions ..

20120907105929.jpg

ChaChannnn! Here is the incision made ...

20120907110303.jpg

After some sanding, we found that the "little guy" 24 "comes into your new home, so clean and correct.

20120907111144.jpg

After the last test, we have to make more "furacos" (a word that we use in Asturias), to put in place where anger later bolted the "little guy".

20120907112849.jpg

Your connection to the corresponding socket (power).

20120907115602.jpg

I had to settle for the eh myself to mount the enclosure, with a lot of work and four hours, to achieve it ... But the passage of the photos that I jump was too focused on my work.
So a photo with armed drawer and tried something.

20120908181358.jpg

A small detail sanding.

20120908181412.jpg

A little drunk, with sealant, but remained perfect!

20120908192334.jpg

Now an image display, compared to a compact car, so everyone can get an idea of the dimensions of it.
To end the perfect day, we caught the red BMW 850i V12 5.0 300hp, to remove soot and boasting a ride car, you can see in the background of the image.

20120908192353.jpg

Well gentlemen, this has been all for now.
But still not finished, missing things teach and what is best, next week I'll put it on the dyno (The thing promises a lot).

A hug.

Israel
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post #20 of 39 Old 09-10-2012, 05:58 PM - Thread Starter
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Quote:
Originally Posted by ItchyTasty42 View Post

http://www.youtube.com/watch?v=WW5LK-T3eV0
Can't imagine what 8 of those monsters would be like, let alone 1....biggrin.gif

My God!
That would be an amazing thing, lol

It would be like being directly in front of the concert. WOOW
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post #21 of 39 Old 09-10-2012, 08:47 PM
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Que estas usando para traducir a Ingles? Algunas de esas palabras estan un poco estrano leyendo en Ingles....

JSS
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post #22 of 39 Old 09-10-2012, 11:24 PM - Thread Starter
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Que estas usando para traducir a Ingles? Algunas de esas palabras estan un poco estrano leyendo en Ingles....
JSS

Correct.

Apologize if the words are not very accurate, the fact is that in Spain we have another way to express ourselves with words and many may not be correct after a translation.

Anyway here in Spain there are words that have no translation into English.

Thousand apologies for the vagueness of some words.
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post #23 of 39 Old 09-11-2012, 07:41 AM
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Nice project! To reduce flexing, I'd add substantial bracing inside those large panels.

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post #24 of 39 Old 09-11-2012, 08:17 AM
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Quote:
Originally Posted by Lecter83 View Post

Correct.
Apologize if the words are not very accurate, the fact is that in Spain we have another way to express ourselves with words and many may not be correct after a translation.
Anyway here in Spain there are words that have no translation into English.
Thousand apologies for the vagueness of some words.

No apologies necessary. I am glad you are posting here.

JSS
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post #25 of 39 Old 09-11-2012, 08:31 AM
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Excellent! I anticipate your impressions.
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post #26 of 39 Old 09-14-2012, 05:11 AM - Thread Starter
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Quote:
Originally Posted by pnw View Post

Nice project! To reduce flexing, I'd add substantial bracing inside those large panels.


Hello

At first is reinforced with screws 210, to see if that is not sufficient, aluminum'll add internal reinforcements.

In short finish the project, I have wanted!
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post #27 of 39 Old 09-14-2012, 05:12 AM - Thread Starter
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No apologies necessary. I am glad you are posting here.
JSS

thank you very much

My pleasure, to share my experience with this great community of scholars.

a hug
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post #28 of 39 Old 09-14-2012, 05:14 AM - Thread Starter
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Excellent! I anticipate your impressions.


I think it will be overwhelming, I am anxious to see how it integrates with my PC13-Ultra DSP.

Soon be finished, I think Tomorrow I have it assembled and put in my room.

biggrin.gif
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post #29 of 39 Old 09-23-2012, 06:45 PM - Thread Starter
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Another small step ...

20120923200038.jpg

20120923062851.jpg

It is a "Beta" subwoofer, then think better. Only is presented in this exhibition to see their performance, but it will be much better in the version 2.0.

From what I've tested and it works a lot, but not in top condition, as the stage is 400W and am awaiting a Crown power amplifier for use in bridge mode and remove the Subwoofer 1.000w need for its optimal performance.

Continuara...

PD: Tono puro 12 hz, 114,8 Dbs..
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post #30 of 39 Old 09-24-2012, 03:44 AM
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How much did that driver cost? That enclosure looks very large, and oh so beautiful!
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