Is foam surround alwas a bad thing deterioratio
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=139232
Printed Date: October 31, 2025 at 1:52 PM
Topic: Is foam surround alwas a bad thing deterioratio
Posted By: knudsen
Subject: Is foam surround alwas a bad thing deterioratio
Date Posted: July 26, 2015 at 12:33 PM
Hello,
The question is in the title. I'm looking at 5" mids with foam. It seems like the smaller the driver, the less of an issue. It seems that way from me, not as much by experience, but by thinking it out. I think the smaller the cone and less the excursion, the less "work" the foam does supporting the cone, the less likely some deterioration is to become a problem. Personal experience wise, I don't recall ever seeing the foam broken on a midrange driver, now on a 6 x 9 for that matter (I don't think I've owned a 6 x 9 with foam surround for 35 years). Am I wrong?
Is there a benefit to foam over paper or rubber? Maybe more compliant for some better performance?
TIA,
jon
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Build a man a fire, he keeps warm for a day. Set a man on fire he stays warm for life!
Replies:
Posted By: DYohn
Date Posted: July 27, 2015 at 8:46 AM
Foam surrounds from the 70's tended to deteriorate. Today's foam not so much of an issue. Usually it's used as a cost saving material. ------------- Support the12volt.com
Posted By: knudsen
Date Posted: July 27, 2015 at 9:07 AM
Thanks DY. I went ahead and ordered the mids. Time to play is my big problem now, more than money is, so if the foam dies in a few years, i'll just frisbe them and buy new.
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Build a man a fire, he keeps warm for a day. Set a man on fire he stays warm for life!
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