3 15s in an enclosure?

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nyguy4u

Copper - Posts: 148

Joined: December 31, 2003

Location: New York, United States

Posted: December 31, 2003 at 2:11 PM / IP Logged

Whats up guys!?. Awesome site.

I have a 01 PT Cruiser and have 3 JL 15's W3's that I plan on putting in a fiberglass enclosure. Question is.. I don't see many 15's in a fiberglass enclosure, let alone 3 of them. Do I need extra support?. I assume the box bottom and sides will be made with 1/2 MDF for support as well as braces inside as well.

Any advice?

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94mx-5

Member - Posts: 32

Joined: April 28, 2003

Location: United States

Posted: December 31, 2003 at 6:00 PM / IP Logged

it just depends on what braces you use for your mdf rings, you may want to use a couple extra and maybe a layer or two extra of glass, i don't think there are many situations where you can have too much support. but you certianly don't want to be lacking support or you will probably end up with some cracks and breaks

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aggie altima

Silver - Posts: 298

Joined: July 25, 2002

Location: United States

Posted: December 31, 2003 at 11:49 PM / IP Logged

I would recommend that you use at least 3/4" MDF for the bottom and sides, but if you have already purchased 1/2" and can't return it, you can double layer the wood so the thickness is 1". I'm assuming that you aren't seperating the speakers into different chambers. As 94mx-5 suggested, just use numerous wood rods to hold the speaker rings. Secure them at the ring and the back of the box with some type of glue and a screw, and that should be sufficient as braces.

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audiomechanic

Silver - Posts: 388

Joined: November 09, 2002

Location: United States

Posted: January 01, 2004 at 11:30 AM / IP Logged

if you use 1/2 inch you WILL want to double it up.

if you use 3/4 you will still want to brace it. as for the glassed part, you can use trunkliner, then 4 layers of 1.5 oz chop mat or similar. that will be enough. it is stronger the more curves it has.

the rings can be 3/4 inch.

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mindctrl

Copper - Posts: 114

Joined: October 29, 2003

Location: United States

Posted: January 05, 2004 at 12:40 PM / IP Logged

At least 3/4th inch, if you haven't bought the wood yet upgrade to 1" for a few dollars more, it's worth it. If you can get your hands on some HDF, I've heard its even better... but I've never worked with it myself so I can't personally vouch for it.

--mindctrl

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pureRF

Silver - Posts: 619

Joined: July 22, 2003

Location: United States

Posted: January 05, 2004 at 2:51 PM / IP Logged

I JUST finished an enclosure for my Eclipse 15 and an alpine amp. With the enclosure i would do it all glass because i think it usually comes out more flush looking like that but for strength i would use 4 layers mat then 1 layer core mat then 4 more mat then maby one more core mat. That will be plenty of strength

dream it, build it, fiberglass it

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3 15s in an enclosure?

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