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Foam Core Board Speaker Enclosures?
Foam Core Board Speaker Enclosures?
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Old 2nd June 2019, 09:30 PM   #3101
Cal Weldon is offline Cal Weldon  Canada
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Foam Core Board Speaker Enclosures?
You sandwiched the drivers between the cardboard and the foam and then glued it up? To replace the drivers you have to ruin your handywork?
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Old 2nd June 2019, 11:40 PM   #3102
xrk971 is offline xrk971  United States
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Foam Core Board Speaker Enclosures?
I screwed the driver to the foam and cardboard as a sandwich with the cardboard acting as the “nut” for the screws. The glue was to seal the edges so that they are air tight and don’t vibrate. Yes, to remove would require destroying at least the rear cardboard mounting ring, which is replaceable. The drivers are connected using soldered wires to removeable Arduino style PCB pins and header sockets. So speaker cable is detachable.
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Old 3rd June 2019, 01:08 AM   #3103
zman01 is offline zman01  Bangladesh
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Foam Core Board Speaker Enclosures?
Double layer baffle...
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Old 3rd June 2019, 02:20 AM   #3104
Cal Weldon is offline Cal Weldon  Canada
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Foam Core Board Speaker Enclosures?
Ok so what we see is what we get. Thanks X.
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Old 3rd June 2019, 02:23 AM   #3105
xrk971 is offline xrk971  United States
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Foam Core Board Speaker Enclosures?
I am doing a bit more listening with the Flower OB using just the Amazon "Echo Input" and it sounds amazingly full and rich. You just would not believe the sound from these cheap looking flimsy little flower baffles. The sub really makes it come alive and sound bigger than it is. I would say that this little project is right up there with sound quality rivaling that of the Karlsonator, almost. I think anyone can go out and get a cube shape 8in or 10in subwoofer and achieve the same thing I am doing with the XKi sub. A basic 2.1 amp from eBay/Aliexpress for a handful of dollars will get you setup nicely.
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Old 11th July 2019, 03:03 PM   #3106
xrk971 is offline xrk971  United States
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Foam Core Board Speaker Enclosures?
Quote:
Originally Posted by xrk971 View Post
Hi Folks,
Itís been a long time since I made a foam core speaker. Had a few hours to make one today and they turned out rather nice sounding. Super easy. Following the idea by Mattes in Jeshiís thread on EVA speakers. Itís a flower petal shaped open baffle. The flower shape reduces edge diffraction effects. Itís about a 12in diameter 5 petal flower with a support base. Using the FR58EX drivers which have an excellent flat response. Paired with a TPA3116 2.1 amp driving my own XKi sub fitted with dual 5.25in Tang Band sub drivers.

The spatial imaging is great and vocals are nice and clear. There is good top end reach on these too like an aluminum dome tweeter.

Almost any 2.5in to 3.5in full range driver can work here. TC9FD, PS95-8, 3FF25, etc.
Plans for the XKi dual driver sub are here:
XKi - X's ab initio Karlson 6th Order Bandpass

Click the image to open in full size.

Excellent sounding sub, btw.
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Old 11th July 2019, 09:19 PM   #3107
xrk971 is offline xrk971  United States
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Last edited by xrk971; 11th July 2019 at 09:23 PM.
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