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Old 3rd February 2003, 12:06 PM   #11
jtriggs is offline jtriggs  Australia
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Join Date: Jan 2003
Location: Sydney, Australia
I must admit that I was tempted by the Shiva, but it just wasn't within my budget

Thanks for all the help so far. I now have all the parts, and will put it together this week. My calculations are below, and I would appreciate any final hints.

Driver: Response 12" XL series
Specs: http://www1.jaycar.com.au/productView.asp?ID=CS2272

150W amp

The box will be:
o 1" MDF held together with PVA glue and 2" chipboard screws
o 47 litres with a Qtc of 0.707
o cube shape with internal width 340mm
o I have assumed that stuffing with 870 grams of polyester fiberfill will increase the box size by 30%

I will brace the box midway behind the driver with 4 1" dowels in a # pattern. The wall opposite the driver will be braced with a single piece of 2" x 2" from top to bottom.

The driver will face downwards with the box 100mm off the ground, supported by 1" x 2" legs. The cone sag will be about 7% but I can live with this.

The final question is how do I stop the fiberfill from falling onto the back of the driver cone?

Many thanks,

James
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Old 3rd February 2003, 12:23 PM   #12
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I personally would have gotten a Peerless Subwoofer.. but thats just me, and I don't have any money anyway..
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File Type: gif untitled9112.gif (10.1 KB, 520 views)
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Old 3rd February 2003, 11:50 PM   #13
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Did someone edit my gif so the background was transparent??

Cos I couldn't do it.... and now there are frames missing..
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Old 3rd February 2003, 11:51 PM   #14
halojoy is offline halojoy  Sweden
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Quote:
Originally posted by SkinnyBoy
Did someone edit my gif so the background was transparent??
Yes, I did it.
Wasn't that better?

halo - the editor
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Old 3rd February 2003, 11:54 PM   #15
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Quote:
Originally posted by halojoy

Yes, I did it.
Wasn't that better?

halo - the editor

No, cos now theres frames missing.. The guy smiled in time to the music.. now the music doesn't change.. (IN TIME TO THE WAVES!!!)
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Old 3rd February 2003, 11:58 PM   #16
halojoy is offline halojoy  Sweden
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If you don't want me to edit your stuff,
you have to post in secure mode.

halo - will edit anything - as he wish
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Old 4th February 2003, 12:00 AM   #17
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Quote:
Originally posted by halojoy
If you don't want me to edit your stuff,
you have to post in secure mode.

halo - will edit anything - as he wish

I'm not compalining, I was just pointing out that there were frames missing, and that it wasn't how it used to be... I don't mind..
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Old 4th February 2003, 01:56 AM   #18
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Location: Queensland, Australia
Quote:
Originally posted by SkinnyBoy
Did someone edit my gif so the background was transparent??

Cos I couldn't do it.... and now there are frames missing..

Quote:
Originally posted by halojoy

Yes, I did it.
Wasn't that better?

halo - the editor

Quote:
Originally posted by SkinnyBoy



No, cos now theres frames missing.. The guy smiled in time to the music.. now the music doesn't change.. (IN TIME TO THE WAVES!!!)

Quote:
Originally posted by halojoy
If you don't want me to edit your stuff,
you have to post in secure mode.

halo - will edit anything - as he wish

Quote:
Originally posted by SkinnyBoy



I'm not compalining, I was just pointing out that there were frames missing, and that it wasn't how it used to be... I don't mind..
Normal users do not have permission to edit other peoples posts ... if you did indeed do this halojoy, please contact me and explain how you did it.
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Old 4th February 2003, 06:31 AM   #19
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Did you change the gif back now? lol.... How do I make the backgroud transparent?? I thought I had..... first I tried making all the frames as gifs before I animated it, with a transparent background... That didn't work, So, then in the gif animator program (GIF animator (part of PhotoImpact 4)) I found I could make all the backgrounds transparent, BUT STILL IT DIDN"T WORK!!
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Old 4th February 2003, 07:37 PM   #20
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Join Date: Feb 2003
Location: Atlanta
Sonotube concrete forms, MDF, and Adire Brahma 15 (if you can afford it) or Adire Tempest (if you can't).

This is just about the best price/performer.

I have a Brahma 15 in 30 inches (inside) of 24 inch sonotube, 6 layers of 22mm MDF on top and bottom (get help moving it). 2 17inch-long, 4inch vents.

+3 at 22hz, -10db at 14hz. Flat-enough everywhere else.

That's 14hz.

It'll push more SPL than my skeletal frame can handle, and is a perfect LF backup for JBL cinema cabinets -AND- Lowther DX3es in Voigt Pipes.
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