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Old 15th June 2012, 10:59 PM   #21
nelnar is offline nelnar  Brazil
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Join Date: Oct 2010
I've almost forgot.
I come back to thank you because I wanted you to put all the measures of TL for me. And unlike you, me, studying the charts that you had calculated. And it only helped me! Thank you so much!
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Old 15th June 2012, 11:23 PM   #22
bjorno is offline bjorno  Sweden
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Join Date: Mar 2005
Location: Jacobsmountain
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Quote:
Originally Posted by nelnar View Post
That lesson you gave me into a friend. I would like to understand the transmission line just like you! Tell me how you have any digital book?
As for the softer you use, would be fully trusted?
That same month I will make this T-suboover TQWT, and when you are ready, post here, with special thanks to you!
Thank you and I apologize for my impatience!
a hug
Thank you nelnar, you wrote kind words..

Here are a few Url's for you to dig into :

The Nature of the Quarter Wave Resonator

Quarter Wavelength Loudspeaker Design

Hornresp for Dum... hmm... Everyone - Page 2 - Home Theater Forum and Systems - HomeTheaterShack.com

Easy Horn Spreadsheet for Dummies

I use the softwares that are 'the tools of trade' here at DIYaudio as they give very good results so far as I can see ..

b
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Old 19th June 2012, 11:47 PM   #23
nelnar is offline nelnar  Brazil
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Join Date: Oct 2010
Quote:
Originally Posted by bjorno View Post
Thank you nelnar, you wrote kind words..

Here are a few Url's for you to dig into :

The Nature of the Quarter Wave Resonator

Quarter Wavelength Loudspeaker Design

Hornresp for Dum... hmm... Everyone - Page 2 - Home Theater Forum and Systems - HomeTheaterShack.com

Easy Horn Spreadsheet for Dummies

I use the softwares that are 'the tools of trade' here at DIYaudio as they give very good results so far as I can see ..

b
Bjorno which of the two amplifiers you recommend for this subwoofer:
Bash Bash 500w or 300w?
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Old 9th August 2012, 01:57 AM   #24
nelnar is offline nelnar  Brazil
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Join Date: Oct 2010
Default new driver NAR

Bjorno when he finally managed to keep all the cash to make the subwoofer, the speaker makes the NAR, is no longer manufacturing. Moved to this model, as follows:

Not wanting to abuse you, and considering that I broke the head to get the new calculations, I did not get anywhere.

You could calculate for me?

Below the model and specifications:

Subwoofer 1266-SW-3

POT NCIA RMS: 300-400watts
IMP DANCIA: 6+6ohms
SENSIBILIDADE: 88db

Revc=2.300 Ohm

Levc=889.758u H

Fo=28.582 Hz

Sd=53.093m M≤

Md=44.000 g

BL=9.648 T∑M

Qms= 6.989

Qes= 0.532

Qts= 0.494

No= 0.440 %

SPLo= 88.5 dB

Vas=103.554 Ltr

Cms=258.705u M/N

Mms=119.852 g


Mmd=105.783m Kg


Xmax= 13mm
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Old 13th August 2012, 01:12 AM   #25
nelnar is offline nelnar  Brazil
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Join Date: Oct 2010
I tried using the horn easy to find the parameters that you used to try to modify the driver, but do not know how he arrived at:
S1 = 531
S2 = 511.26
S3 = 196.74
S4 = 177.00

and also the line 287 cm?

Tell me where I'm wrong?
Attached Images
File Type: jpg NAR12SW3.jpg (183.7 KB, 175 views)
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Old 13th August 2012, 01:18 AM   #26
nelnar is offline nelnar  Brazil
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Join Date: Oct 2010
In fact, only the S1 = 531.00 I know. It is the SD. but what else?
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Old 17th August 2012, 09:29 PM   #27
bjorno is offline bjorno  Sweden
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Join Date: Mar 2005
Location: Jacobsmountain
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Quote:
Originally Posted by nelnar View Post
Bjorno when he finally managed to keep all the cash to make the subwoofer, the speaker makes the NAR, is no longer manufacturing. Moved to this model, as follows:

Not wanting to abuse you, and considering that I broke the head to get the new calculations, I did not get anywhere.

You could calculate for me?

Below the model and specifications:

Subwoofer 1266-SW-3

POT NCIA RMS: 300-400watts
IMP DANCIA: 6+6ohms
SENSIBILIDADE: 88db

Revc=2.300 Ohm

Levc=889.758u H

Fo=28.582 Hz

Sd=53.093m M≤

Md=44.000 g

BL=9.648 T∑M

Qms= 6.989

Qes= 0.532

Qts= 0.494

No= 0.440 %

SPLo= 88.5 dB

Vas=103.554 Ltr

Cms=258.705u M/N

Mms=119.852 g


Mmd=105.783m Kg


Xmax= 13mm
Hi nelnar,

Here is an attempt using the new driver:

b
Attached Images
File Type: jpg Nar Audio Subs 1266-SW.JPG (598.2 KB, 158 views)
File Type: jpg Nar Audio Subs 1266-SW_cont.JPG (259.9 KB, 144 views)
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Old 18th August 2012, 12:36 AM   #28
nelnar is offline nelnar  Brazil
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Join Date: Oct 2010
Thank you my friend.
Now let's see if I've learned!
The following measures of the subwoofer, as I understood your project.

Note: You like to do I suffer! (kkkkkkk, just kidding)

For now thank you very much my friend!

You are a very special person.
Attached Images
File Type: png SUB NAR NEW DRIVE.png (19.9 KB, 135 views)
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Old 18th August 2012, 12:44 AM   #29
nelnar is offline nelnar  Brazil
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Join Date: Oct 2010
Have I forgot.
If you allow me, in his honor, put the name of the subwoofer:

SUBJORNOBASS
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Old 26th August 2012, 02:18 PM   #30
nelnar is offline nelnar  Brazil
diyAudio Member
 
Join Date: Oct 2010
The subwoofer has arrived, just need your endorsement to finally make the subwoofer!
Attached Images
File Type: jpg DSC02808.jpg (671.9 KB, 119 views)
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