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Old 27th February 2008, 06:54 AM   #1
wixy is offline wixy  Australia
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Default Open baffles - best way to support them?

I'm just after people's advice on building a support for an open baffle so it doesnt fall over.

Would it be a good idea to have an adjustable support so the angle of the baffle can be varied?

Anyone have any tips on the best way to keep an open baffle standing up solidly?
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Old 27th February 2008, 06:57 AM   #2
Nanook is offline Nanook  Canada
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Default sure...

build a frame to hold the baffles upright.

Do a search for Open baffle loudspeakers using Google "images" or similar...


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Old 27th February 2008, 09:31 AM   #3
Rudolf is offline Rudolf  Germany
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I would suggest something like this:

Click the image to open in full size.

The side wings donīt need to reach up that much, but they will effectively support any woofer driver SPL down low. In this case a 5° baffle angle was built in.
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Old 27th February 2008, 10:59 PM   #4
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I'm going to go for the centre 'wing' rather than the 2 side wings. My sizing is based on MJK's simulation software, which is basically modelling only the front panel - side wings would change this quite a lot. It also allows me to support the drivers' magnets (I didn't have a picture of either of the drivers I'm using, so this is just a mock up) which I like to do in my sealed boxes as well.

To stop it tipping forwards, I'm going to use a couple of little fillets, probably in both corners; maybe in the centre; possibly all across the whole unit. Not sure of the exact size, it'll depend on the SAF required...

Hi wixy, I cut up the baffles and then got a lovely ear infection and haven't been able to use power tools or listen to music for a couple of weeks... but I'm on the hard drugs now and hopefully it'll clear up soon. Then I can post some pics...
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File Type: jpg ob.jpg (12.6 KB, 643 views)
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Old 27th February 2008, 11:05 PM   #5
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Hi wixy,

One of the things to consider is that the support whether it be on the sides or in the center, should stiffen the baffle to reduce it's potential resonance. Any waffling can further reduce the bass output if some of that energy goes into flexing the baffle. Think stiff.
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Old 27th February 2008, 11:08 PM   #6
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Default Re: Open baffles - best way to support them?

Quote:
Originally posted by wixy
Anyone have any tips on the best way to keep an open baffle standing up solidly?
I find that if you lean one against the other, you can build a nice pile of crumpled up newspaper and kindling in the gap. A little lighter fuel, and woosh, you're away.
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Old 27th February 2008, 11:13 PM   #7
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Old 27th February 2008, 11:17 PM   #8
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Quite right Cal, I apologise. You only need to follow the above instructions if you have Lowthers.
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Old 27th February 2008, 11:21 PM   #9
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Old 27th February 2008, 11:49 PM   #10
ronc is offline ronc  United States
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HAY! i like my OBs. I been dinking around and have them in the corners now with a 14" square OB set 90 degrees to the LF OB. and the mid/HF OB aimed directly at my depression in the couch(OK a little higher).

Sorry, but the LF response is stronger and appears to extend lower than setting the whole thing out in the middle of the room.
The open sound is still there but with a stronger/lower LF response. The angle to my butt depression is around 37 degrees off of perpendicular to the wall intersection. Given a 45 degree from the walls.

Much better, try it. Simple (like me) and easy. Still dosent give the room filling response of the A166 (and the LF depth response as well) but for a simple build and the clean open sound , its hard to beat.

ron

I am not pushing the A166, i dont have to, its just the only comparasion i can give.
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