Where do you find foam port plugs? - AVS Forum | Home Theater Discussions And Reviews
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post #1 of 14 Old 04-28-2019, 11:15 AM - Thread Starter
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I'm looking for port plugs for my Marty Cubes and my eD a5-350s. Would need a couple for some 4" diameter round ports and slot ported shaped plugs. Anyone know how to either make some, or buy some premade? What's the best material to use, that's not too expensive?

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post #2 of 14 Old 04-28-2019, 01:49 PM
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post #3 of 14 Old 04-28-2019, 11:43 PM
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For the round ports, Head to Target or Walmart and find a Nerf ball with a 5-6" diameter...
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post #4 of 14 Old 05-02-2019, 09:18 AM
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Thanks for the link!
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post #5 of 14 Old 05-02-2019, 10:10 AM
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So one can simply plug any subs port to try it sealed, safely? Keep the HPF at the original tuning frequency?

I see an 8.5" ball... maybe need it more "stuffed", an even bigger one for an 8" port. 10"?
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post #6 of 14 Old 05-02-2019, 10:17 AM
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Pretty good! Forgot about the foam factory & foam by mail from DIY mattress days. Unfortunately shipping cost as much as the 10" cylinder (unless I went for 6 of them)!


Edit- hey I have leftover polyurethane eggcrate mattress topper for lining... can I roll some of that up tight and stuff it?
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post #7 of 14 Old 05-02-2019, 10:51 AM
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You can use whatever you like...the point is to stop the air flow.
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post #8 of 14 Old 05-05-2019, 06:25 AM - Thread Starter
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Anyone have suggestions for slot port plugs?

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post #9 of 14 Old 05-05-2019, 07:15 AM
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I bought some open cell poly foam from Home Depot a couple inches larger than the height of the slot. I cut it a couple inches wider and about 6" deep, so I could squish it down and really stuff it in. It worked great.

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post #10 of 14 Old 05-22-2020, 07:03 PM
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Here you go
Sponge
Round
Cut to length
Virtually no cost.
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post #11 of 14 Old 05-22-2020, 09:12 PM
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Like V said, I would use mattress foam topper for slotted.

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post #12 of 14 Old Today, 04:30 AM
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Closed cell foam would give better results but YMMV.
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post #13 of 14 Old Today, 09:36 AM
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Like V said, I would use mattress foam topper for slotted.
Foam topper is a good idea - would be nice if there was something smaller and less expensive ---

Any more ideas?
Thanks
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post #14 of 14 Old Today, 12:47 PM
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Here’s how I build mine.


https://www.avsforum.com/forum/155-d...l#post59130012

Might be more elaborate than you want. The foam alone will work great and isn’t overly expensive from amazon.

Chris
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