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Foam Core Board Speaker Enclosures?
Foam Core Board Speaker Enclosures?
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Old 22nd June 2020, 07:50 PM   #3201
Elmojo is offline Elmojo  United States
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Originally Posted by Cal Weldon View Post
Dependent on the size of the panels. The larger the piece the thicker it has to be. What size are they?

You mean the size of whatever I end up building, right?
I dunno yet, just thinking this would be fun material to build with, much stiffer and maybe better insulating than the cheap Dollar Store foam board I've been using.

At the moment, I have no specific projects in mind, but likely it would be smaller things like the uFonken, or Bloodhounds, things of that nature.
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Old 22nd June 2020, 08:06 PM   #3202
Cal Weldon is offline Cal Weldon  Canada
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Foam Core Board Speaker Enclosures?
The foam boards works well in things like the Cornu because it's only about 3-5" wide and the pressure is equal on either side of it. In a more regular box, the panels are prone to flexing so need to be stiffer. For a 1/2" board I wouldn't go more than about 6-8" by 10 or maybe 12". Doubling the baffles is always a good idea.
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Old 2nd July 2020, 10:09 PM   #3203
Cindra is offline Cindra  Croatia
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So I destroyed some more XPS boards and some hot glue. Playing quite nice. Better half said that even they not have same response as my other speakers this speakers doesnt irritate her. Other speakers are Sonus Faber Signum and Monitor Audio Gold 100 connected with Straight Wire Virtuoso to Denon PMA 2010.
This is Mark Audio CHP 70 connected to Kenwood micro system...what to say
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Old 3rd July 2020, 12:55 AM   #3204
xrk971 is offline xrk971  United States
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Foam Core Board Speaker Enclosures?
Nice work Cindra! So the foam speaker sounds better than a Sonus Faber to your spouse? Nice.
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Old 3rd July 2020, 02:09 AM   #3205
Elmojo is offline Elmojo  United States
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You guys make this look so easy. I'm jealous.

Beautiful foamcraft Cindra.
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Old 3rd July 2020, 07:34 AM   #3206
Cindra is offline Cindra  Croatia
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Thx guys��
Elmojo, its really easy to work with foam boards. I used sharp kitchen knife. Not too happy with hot glue but wasnt sure what to use because some glues melt foam (learn that hard way)
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Old 3rd July 2020, 11:21 AM   #3207
xrk971 is offline xrk971  United States
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Foam Core Board Speaker Enclosures?
With XPS you need to use non voc construction adhesive. PL Premiun etc.
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Old 3rd July 2020, 01:51 PM   #3208
Elmojo is offline Elmojo  United States
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@Cindra: Oh, I'm very familiar with working with foam board from my RC plane building days, but that doesn't mean I can do beautiful work like yours.
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Old 3rd July 2020, 05:43 PM   #3209
the gecko is offline the gecko  United States
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Default Final Product

This is how the final iteration of the 0.53x K's turned out for my daughter.

- Dayton PA-130's
- 2 coats of HVLP sprayed Latex bathroom paint
- Rustoleum Stone texture paint
- 1/4" cherry plywood with Boiled Linseed Oil and Wax finish
- Black drywall screws

Click the image to open in full size.

They sound great and look not half bad. Now my brother wants a pair for his garage! I said OK. Waiting on backordered Vifas......

Click the image to open in full size.
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Old 3rd July 2020, 05:53 PM   #3210
xrk971 is offline xrk971  United States
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Foam Core Board Speaker Enclosures?
Hi Gecko.
You know how to make foam core look classy! Nice work!

BLO and wax is one of my favorite finishes and it looks fantastic on cherry. Don't they sound great!? Not bad for a $18 "PA driver".

You may have found a new second career if these orders for more speakers keeps up? Could you make me a pair like this?
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