Thickness majority?

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toolinmaine

Member - Posts: 26

Joined: November 07, 2005

Location: United States

Posted: January 28, 2006 at 10:38 PM / IP Logged

Hello, I am 16 yrs old and i have worked with fiberglass on vehicles and boats but never for a subwoofer enclosure. I have read almost every thread on this site over the past two months and nothing has seemed to answer some of my quiestions as a beginer. I have a volkswagon and i am preparing to build a box to house 2 12 inch subwoofers and a panel for a 1200 watt amp. I wanted to know what you have for a box and accesories and how many layers of fiberglass you applied to your model. This is basically so i can get an idea of how many layers for my box and how yours were constructed. Thank you for your time.

eric anderson-nosredna cire

bellsracer

Silver - Posts: 703

Joined: January 14, 2006

Location: United States

Posted: January 30, 2006 at 2:29 AM / IP Logged

Pretty vague information toolin. There is all kinds of ways to build a box, so it is more important to think about what kind of sound you want, where you want the speakers, and what materials you are comfortable with.

If you are looking for a tighter, more responsive bass build a sealed box. Ported for deeper, boomier bass. You can also put polyester stuffing into a sealed box to get a boomier voice out of hte subs.

If you plan on using F/G for your materials, build it up at least 3/8" thick to cope with vibration. One of the best ways for the box to minimize the vibration is to build a good frame to hold the speaker rings before you fiberglass.

One of our guys early projects used MDF boxes for the speakers and just used to the fiberglass to fill in the areas between the boxes and amp panels.

In short, without more information, it is kind of hard to tell you what to do.

Ganbatte ne (Good luck)

Never send your ducks to eagle school.

The difference between ordinary and extraordinary is that little extra.

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corty

Member - Posts: 2

Joined: January 24, 2006

Posted: January 31, 2006 at 11:05 AM / IP Logged

are three thick layers of FG enough?

as a filler i used stucco mixed with white wood glue. havent tried it yet... any opinions??

bellsracer

Silver - Posts: 703

Joined: January 14, 2006

Location: United States

Posted: February 02, 2006 at 5:45 AM / IP Logged

corty wrote:

are three thick layers of FG enough?

as a filler i used stucco mixed with white wood glue. havent tried it yet... any opinions??

It isn't so much about number of layers so much as the thickness of the fiberglass in total. We find that multiple thinner layers tend to be much stronger than a few thick layers.

As for your filler mix, no clue!

Never send your ducks to eagle school.

The difference between ordinary and extraordinary is that little extra.

The 3Ls of life: Learn from the Past, Live for the Present, Look to the Future.

HottAccord

Silver - Posts: 247

Joined: August 12, 2004

Location: United States

Posted: February 02, 2006 at 7:40 PM / IP Logged

Well basically, you'd have to do the thumb test. Push your enclosure with your thumb and if it flexes, its not thick enough. This means it will flex once the sub starts pounding inside the box. If you're using 1 1/2 oz fiberglass mat, you'd probably want to do at least a minimum of 5 layers. Most people prefer 5-8 on average, it depends on how much power you're gonna feed to the sub.

As far as your stucco/white glue, that might be good for boats. But for glass boxes, you're gonna have to get some polyester resin for your mat to soak/harden in. Check out number of Glass Layers Xplained. Good luck!

Im a fiberglass whore!!

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Thickness majority?

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