Speakers constructed using unusual items

Brisso57 · 3rd August 2007, 02:06 AM

I was at Ikea the other day and I saw a "SEKIN" flat-bottom wooden bowl.

http://www.ikea.com/au/en/catalog/ca.../dining/10584/

I had a thought that if I cut a hole in its base, I could mount a small FR driver, using the bowl as a sort of basic horn. Add to that a small cabinet of appropriate volume behind to support it.

Now I know that the taper is unlikely to be anything acoustically correct, but I still think it could be the basis for a fun project. Perhaps use the small, circular-frame HiVi FR driver. Paint the unit a wild colour. Enjoy.

Has anyone made speakers from such found objects?

Pictures anyone?

cheers

Doug

wafflesomd · 3rd August 2007, 03:00 AM

I would use the big bowl on the top of the page.

That looks like a great easy way to do things. Hopefully it won't get shot down with actual facts. Cause I really have no idea how it would sound.

454Casull · 3rd August 2007, 03:11 AM

What I would do is coat the inside of the Blanda Blank with a tar-like damping layer up to maybe 1" from the rim, then weld two of them together to form a spherical enclosure.

Heck, if you didn't mind the aesthetics of it, you could weld two bare bowls together, slap on a damping layer, and then fit another two bowls on top for your own constrained layer damping.

Brisso57 · 3rd August 2007, 04:52 AM

I had in mind using the bowl I originally suggested because it had a flat bottom that would (a) be easy to cut out (come from the back with a hole saw); and (b) be easier in which to mount a driver.

... but hey, whatever!

Keep the original ideas coming.

Further: you could* mount a very small super-tweeter coaxially (on a strut), along the lines of the Hammer Dynamics idea. How about the Dayton ND20FB-4?

* This could be over-egging the pudding! :-)

Doug

planet10 · 3rd August 2007, 05:43 AM

Quote:

Originally posted by 454Casull
What I would do is coat the inside of the Blanda Blank with a tar-like damping layer up to maybe 1" from the rim, then weld two of them together to form a spherical enclosure.

http://www.diyaudio.com/forums/showt...882#post991882

dave

Pano · 3rd August 2007, 05:46 AM

I remember those. Thanks Dave!

phase_accurate · 3rd August 2007, 09:22 AM

IKEA seems to be an endless source of items that can be misused for speaker projects:

http://f24.parsimony.net/forum56884/messages/15430.htm

http://www.lautsprechershop.de/hifi/...hifi/ct226.htm

Regards

Charles

Moondog55 · 12th August 2007, 08:01 AM

I found these while surfing the web;
is this what you were thinking about??
/www.instructables.com/id/E4ZDPUAPFIEXCFGS63
Ted

3rd August 2007, 02:06 AM	#1
Brisso57 diyAudio Member Join Date: Sep 2005 Location: the leafy west of Brisbane	Speakers constructed using unusual items I was at Ikea the other day and I saw a "SEKIN" flat-bottom wooden bowl. http://www.ikea.com/au/en/catalog/ca.../dining/10584/ I had a thought that if I cut a hole in its base, I could mount a small FR driver, using the bowl as a sort of basic horn. Add to that a small cabinet of appropriate volume behind to support it. Now I know that the taper is unlikely to be anything acoustically correct, but I still think it could be the basis for a fun project. Perhaps use the small, circular-frame HiVi FR driver. Paint the unit a wild colour. Enjoy. Has anyone made speakers from such found objects? Pictures anyone? cheers Doug __________________ A speaker-builder's parable: "That burned down, fell over, then sank into the swamp. But the fourth one stayed up. And that's what you're going to get, Lad, the strongest castle of all."

3rd August 2007, 03:11 AM	#3
454Casull diyAudio Member Join Date: Jan 2004 Location: Toronto, ON, Canada	What I would do is coat the inside of the Blanda Blank with a tar-like damping layer up to maybe 1" from the rim, then weld two of them together to form a spherical enclosure. Heck, if you didn't mind the aesthetics of it, you could weld two bare bowls together, slap on a damping layer, and then fit another two bowls on top for your own constrained layer damping. __________________ Building a 2.1 system out of a 3/4"x4'x8' sheet

3rd August 2007, 04:52 AM	#4
Brisso57 diyAudio Member Join Date: Sep 2005 Location: the leafy west of Brisbane	I had in mind using the bowl I originally suggested because it had a flat bottom that would (a) be easy to cut out (come from the back with a hole saw); and (b) be easier in which to mount a driver. ... but hey, whatever! Keep the original ideas coming. Further: you could* mount a very small super-tweeter coaxially (on a strut), along the lines of the Hammer Dynamics idea. How about the Dayton ND20FB-4? * This could be over-egging the pudding! :-) Doug __________________ A speaker-builder's parable: "That burned down, fell over, then sank into the swamp. But the fourth one stayed up. And that's what you're going to get, Lad, the strongest castle of all."

3rd August 2007, 05:46 AM	#6
Pano diyAudio Moderator Join Date: Oct 2004 Location: North Carolina Blog Entries: 4	I remember those. Thanks Dave! __________________ Take the Speaker Voltage Test!

12th August 2007, 08:01 AM	#8
Moondog55 diyAudio Member Join Date: Jun 2007 Location: Norlane; Geelong: Victoria: Australia	what do you think of these?? I found these while surfing the web; is this what you were thinking about?? /www.instructables.com/id/E4ZDPUAPFIEXCFGS63 Ted __________________ QUOTE" The more I know, the more I know, I know (insert maniacal laugh >here<) NOTHING"


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3rd August 2007, 03:00 AM	#2
wafflesomd diyAudio Member Join Date: Jul 2007	I would use the big bowl on the top of the page. That looks like a great easy way to do things. Hopefully it won't get shot down with actual facts. Cause I really have no idea how it would sound.

3rd August 2007, 09:22 AM	#7
phase_accurate diyAudio Member Join Date: May 2002 Location: Switzerland	IKEA seems to be an endless source of items that can be misused for speaker projects: http://f24.parsimony.net/forum56884/messages/15430.htm http://www.lautsprechershop.de/hifi/...hifi/ct226.htm Regards Charles

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