Metal box

Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=55472
Printed Date: May 12, 2025 at 11:59 AM

Topic: Metal box

Posted By: staticxsoil
Subject: Metal box
Date Posted: May 10, 2005 at 10:36 AM

Has any one built a sub anclosure out of metal?

Replies:

Posted By: DYohn
Date Posted: May 10, 2005 at 10:39 AM

I haven't personally built one but I've seen several. What did you want to know?

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Posted By: Francious70
Date Posted: May 10, 2005 at 12:45 PM

There's actually a few thread on here about that same subject. If I remember correctly a member built one and posted pictures and said he didn't much care for the way it sounded.

https://www.the12volt.com/installbay/forum_posts.asp?tid=40662&KW=steel

https://www.the12volt.com/installbay/forum_posts.asp?tid=49771&KW=steel

Paul

Posted By: AudioZBahn
Date Posted: May 10, 2005 at 12:49 PM

I have heard a memphis sub in a metal enclosure and it sound pretty shhhty. It sounded hollow maybe he didn't have enough fil but something just didn't sound right for it.

Posted By: racer427
Date Posted: May 10, 2005 at 6:12 PM

Metal tends to resonate heavily and the only way that I would think that you could get rid of it would be to line the hell out of it with Dynamat or heavy undercoating.

And that would be one hell of a heavy box!!!!!

Chris

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Cadence Q400 4 Channel Mains + rears
Thunder 801D Subs
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4g grounds

Posted By: ss-installer
Date Posted: May 10, 2005 at 7:04 PM

ill stick to wood and glass. i hate welding.

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Posted By: staticxsoil
Date Posted: May 12, 2005 at 10:40 AM

The enclosure is for a truck. Im decent at welding and i plan to use alot of sound deadning in it. i was just wondering about the resonating quality of metal.

Posted By: DYohn
Date Posted: May 12, 2005 at 12:56 PM

Use aluminum, not steel, and you can eliminate most resonance problems. You want your enclosure to be acoustically neutral and not resonate at all. If you must use steel, build it oversize and line it with MDF (actually build an MDF enclosure and then cover it with metal) for best results.

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Posted By: Master Asylum
Date Posted: May 13, 2005 at 7:24 AM

Dyohn, I love you, I just want you to know that. :) So efficient.

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1998 Monte Carlo w/
Eclipse CD8454
2xRockford 5.25" Power 2-way T152C
2xRockford 6"x9" Punch 3-way FRC4369
1xMemphis 16-MCH1300 5-channel
2xKicker 12" L5 Solobaric-2 Ohm

Posted By: staticxsoil
Date Posted: May 13, 2005 at 9:52 AM

what grade of aluminum and how thick?

Posted By: DYohn
Date Posted: May 13, 2005 at 10:29 AM

5052 or 6061, 3/8" or 1/2" thick. Plate is better than sheet, honeycomb is better than solid. It can get expensive.

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