Fiberglass vs. MDF
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=26201
Printed Date: May 14, 2025 at 2:36 PM
Topic: Fiberglass vs. MDF
Posted By: jae-rome
Subject: Fiberglass vs. MDF
Date Posted: February 10, 2004 at 2:14 AM
I know I just started building the sub enclosure out of MDF now I am contiplating on if I want to do fiberglass instead. Only thing I have heard negatively about fiberglass is that it resonates the sound too much. Just wondering if any of you have come across that problem or not
Replies:
Posted By: forbidden
Date Posted: February 10, 2004 at 2:34 PM
1/2" of fibreglass is easily as strong as 3/4" of mdf. It however like glass and plexiglass is a highly acoustic reflective surface and should have some kind of dampening on it. A sprayable sound deadener or vehicle undercoating will work for this. A light amount of polyfill also may help out.
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Posted By: Teamrf
Date Posted: February 10, 2004 at 3:11 PM
Yea most of the time people doing Fiberglass enclosures just glass the front part of it, and use MDF for all the other sides.
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Rookie of the year that is...
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Posted By: jae-rome
Date Posted: February 10, 2004 at 3:21 PM
Ok thnks for that input guys, but I heard of people using dynamat in the enclosure. I heard a system that had that setup and it sounded like crap. But people tell me that the dynamat is better than using the polyfill.
Posted By: pureRF
Date Posted: February 10, 2004 at 3:22 PM
I would def do glass if u want to, mostly becauseu will do it sometime if u want to right now. In my glass box i sprayed a Wal-Mart truck bed liner on the inside and i guess it helped because it sounds amazing.
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