The making of a Sub-woofer - Chicagoland Sportbikes
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post #1 of 13 (permalink) Old 04-21-2009, 12:06 PM Thread Starter
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The making of a Sub-woofer

A bit long, but a very cool video of the manufacture of a HUGE subwoofer:

http://blog.edesignaudio.com/


Really neat to see, and I'm jealous of their CNC router. If I had one of those, I'd be making a sub-woofer every couple days for people!

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Last edited by Lonely Raven; 04-21-2009 at 12:41 PM.
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post #2 of 13 (permalink) Old 04-21-2009, 12:19 PM
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I would make all my own furniture if I had one of those things. Shit that was awesome.

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post #3 of 13 (permalink) Old 04-21-2009, 12:26 PM
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All that robustness and then they use nails and no screws? I would do modal analysis on that shit to really see if you need 4 sheets of material. That thing must have weighed 500lbs.

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post #4 of 13 (permalink) Old 04-21-2009, 12:31 PM
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Great vid....


Cool looking audio products.



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post #5 of 13 (permalink) Old 04-21-2009, 12:32 PM
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Quote:
Originally Posted by MM Racing View Post
All that robustness and then they use nails and no screws? I would do modal analysis on that shit to really see if you need 4 sheets of material. That thing must have weighed 500lbs.


It was a sub..... cabinet resonance a big issue for deep-deeps.


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post #6 of 13 (permalink) Old 04-21-2009, 12:33 PM
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Yes I realize that, hence FEA structure and modal analysis would be a good tool here.

Ian
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post #7 of 13 (permalink) Old 04-21-2009, 01:42 PM
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Quote:
Originally Posted by MM Racing View Post
All that robustness and then they use nails and no screws? I would do modal analysis on that shit to really see if you need 4 sheets of material. That thing must have weighed 500lbs.
a properly glued wood joint is stronger than the wood itself. it's clamped together and nailed to hold the pieces in place until the glue is dry.

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post #8 of 13 (permalink) Old 04-21-2009, 02:07 PM Thread Starter
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Quote:
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a properly glued wood joint is stronger than the wood itself. it's clamped together and nailed to hold the pieces in place until the glue is dry.
Agreed 100%

Though, I'm not happy with them not rolling the glue out and just mashing it with a rubber mallet. And while I appreciate they are trying to use greener materials then the MDF they used to use, I don't believe that much bracing is needed to control resonance. 1/2" ply would have saved them a ton of weight and done just as well if spaced correctly.

But eD is somewhat old skool in their ways, with the modern twist of using the CNC router to cut their wood for them.

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post #9 of 13 (permalink) Old 04-21-2009, 02:26 PM
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all that and they didn't fire it up? I'm disappointed but it was still cool.

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post #10 of 13 (permalink) Old 04-21-2009, 04:16 PM
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Im disappointed but how ineffificient that was
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post #11 of 13 (permalink) Old 04-21-2009, 04:17 PM
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Quote:
Originally Posted by Audiofyl View Post
a properly glued wood joint is stronger than the wood itself. it's clamped together and nailed to hold the pieces in place until the glue is dry.
Right therefore there is no use to the glue.
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post #12 of 13 (permalink) Old 04-21-2009, 06:56 PM
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Quote:
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Right therefore there is no use to the glue.
untrue. those brad nails won't hold that wood together under very much stress. you can pull it apart by hand if you had an edge to grab on to.

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post #13 of 13 (permalink) Old 04-21-2009, 08:08 PM
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Quote:
Originally Posted by Audiofyl View Post
untrue. those brad nails won't hold that wood together under very much stress. you can pull it apart by hand if you had an edge to grab on to.
No, as in choose a better material
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