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IKEA Blanda Bamboo Bowl Speakers
IKEA Blanda Bamboo Bowl Speakers
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Old 21st January 2018, 07:08 AM   #1
hyped is offline hyped  Australia
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Default IKEA Blanda Bamboo Bowl Speakers

Hi all,
I was hoping I could get some advice on routing. I知 looking to build a pair of speakers with the IKEA blanda bamboo bowls.

Now I値l be the first to admit I知 somewhat challenged when it comes to wood working ( and that痴 been somewhat kind).

I致e just got a plunge/fixed router and have a jasper speaker jig. Where I知 struggling is working out, how to cut out the speaker hole/recess given Its a bowl.
Should I build some sort of box around it with a hole in it level with the bowl bottom?

If anyone has built a blanda speaker (I知 using the large 11inch ones in bamboo) before or could offer some advice how best to router out a hole and recess for the 5inch driver that would be great.

Sorry for noob question but any advice would be greatly appreciated

Thanks Guys
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Old 21st January 2018, 07:54 AM   #2
SemperFi is offline SemperFi  Wake Island
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Cool project. Go fer it. What drivers are u using? Keep us updated with pictures.
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Old 21st January 2018, 09:33 AM   #3
hyped is offline hyped  Australia
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Quote:
Originally Posted by SemperFi View Post
Cool project. Go fer it. What drivers are u using? Keep us updated with pictures.


Thanks Semper, well if I can work out a clean way to router the bowls I値l be using a pair of Tang Band W5-1611SAF 5" sealed and crossed over to a small sub at 100hz
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Old 22nd January 2018, 02:32 AM   #4
PRR is offline PRR  United States
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You plan two for a full sphere?

You want a round hole on a curved surface??

I'd look for a 5" hole-saw and go from the inside. Then hold the outside to a sander until I had enough flat to set the speaker rim. (Is sanding bamboo bad?) Sorry this does not use your router.

I suppose you could box it out until it looks like the flat surface your speaker-router probably expects. But that may get into more involved woodworking.

You could just slap a flat bamboo cutting-board on the bowl top, first routing that for a speaker. The internal volume may still be adequate. The look will be very different.

Putting a speaker in a sphere gets into some wacky acoustics. For a Five on an Eleven, not as much as with a point-source. Anyway this is clearly about the looks.
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Old 23rd January 2018, 08:25 PM   #5
Mayuri is offline Mayuri  Finland
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In my built I used just a hole saw to cut a driver diameter hole into the bowl. Then added bracing to inside for the driver to mount to. Turned out pretty well:
Click the image to open in full size.
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Old 23rd January 2018, 08:33 PM   #6
hyped is offline hyped  Australia
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Quote:
Originally Posted by Mayuri View Post
In my built I used just a hole saw to cut a driver diameter hole into the bowl. Then added bracing to inside for the driver to mount to. Turned out pretty well:
Click the image to open in full size.


Hi Mayuri
Great job well done look great and love the stands. Thanks for providing info.

Few questions if I may? How did you find cutting through the bowl with hole saw, did it go through ok, splinter etc? I致e never worked with it but know Bamboo is dam hard and seemingly prone to splinter.

How/what did you line and/or fill the speaker with for dampening etc?

The stands did you just put some sort of threaded insert into the bowl? How did you attach stand?

Thanks heaps mate
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Old 25th January 2018, 05:31 AM   #7
Mayuri is offline Mayuri  Finland
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Hey mate,

Didn't have a problem with splinters, but the bamboo was damn hard to cut through. It's a war of attrition even with a good saw.

I actually used only felt and wool inside the cabinet for damping. The ready enclosures are surprisingly solid and inert. I used high-strengh construction epoxy and cut two extra bowls for internal braces. So, two spheres are made of 3 bowls each actually.

I got lazy with stands and just put a hole in the bottom (there's a cup-like internal brace within so actually airtight). Just some elastic glue to the hole, rod in, support until dry. Threaded insert would have been better, so I recommend it.

Here's my build thread:
ET Build: Ripole sub & SS 10F/8424
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Old 25th January 2018, 05:49 AM   #8
sthcoaster is online now sthcoaster  New Zealand
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IKEA Blanda Bamboo Bowl Speakers
Quote:
Originally Posted by Mayuri View Post
In my built I used just a hole saw to cut a driver diameter hole into the bowl. Then added bracing to inside for the driver to mount to. Turned out pretty well:
Looks great and nice to see the no nonsense, dependable NAD there.
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Old 25th January 2018, 12:58 PM   #9
HaerdenC is offline HaerdenC  Belgium
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Send a message via ICQ to HaerdenC IKEA Blanda Bamboo Bowl Speakers
I used another IKEA set (bathroom set / 2 flowerpots in order to make a small bathroom / sleepingroom radio.

- Had 2 full range speakers laying around
- cheap power supply from uncle ali(express) (5.5 euro) 12 volt 2 ampere
- 16 euro car radio on Wish including FM, USB, Bluetooth and ... remote control
- universal fm antena (glue strip) 2 euro aliexpress

results:
full range speaker in flowerpot with doorknob stand
Click the image to open in full size.

just some damping and a small 5 mm triplex rear plate
Click the image to open in full size.

End product
Click the image to open in full size.

rear view
Click the image to open in full size.

plan to use some varnish when I'm doing some other projects to match the colors of the triplex and the bamboo however works fine looks fine to
Click the image to open in full size.

optional 2 extra speakers possible as the radio has 4 speaker outs, there is also 2 rca's if you want to add active subwoofer(s)

Sound quality is surprisingly good considering the cheap materials used.
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Old 30th January 2018, 05:41 PM   #10
Octavia is offline Octavia  United States
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Very cool to see the car stereo in there. Reminds me of a big party I went to at the home of one of the Doobie Brothers. Given he had a full out recording studio built above the garage and the neighborhood was filled with Ferrari's and such I was really expecting some amazing sound system in the main house. What a surprise when it turned out to be a Nakamichi car stereo!
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