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Old 1st September 2011, 10:25 AM   #1
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Default Nelson Pass: The Slot Loaded Open Baffle Project

Just a heads up DIY guys as Nelson Pass penned a DIY speaker project and i just posted it. Am doing my best to keep the DIY section of the Review Magazine going and am always open to publishing projects (pres, amps, speakers, etc). Nelson's article is at:

The Slot Loaded Open Baffle Project Article By Nelson Pass
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Old 1st September 2011, 12:37 PM   #2
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Default What the...

Look at that!

I have 8 Peerless- 12 ohm, 8" drivers...might have to get 4 more!!

Nice find.
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Old 1st September 2011, 12:41 PM   #3
Zen Mod is offline Zen Mod  Serbia
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funny thing is that it seems that I can't be -ever - surprised by Papa's ideas ......

OK - with ideas - yes , but having him around again with new things , is somehow usual .....

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Old 1st September 2011, 02:15 PM   #4
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I have 8 of these already. Just ordered 4 more. $7 each.

parts-express.com
Peerless India W8-12T 12P 8" Paper Cone Woofer 12 Ohm
Part Number: 299-068
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Old 1st September 2011, 02:18 PM   #5
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where do I put the Steinway?
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Old 1st September 2011, 02:25 PM   #6
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Quote:
where do I put the Steinway?
Sell it and build a dedicated listening room.

Being single can suck sometimes, but sometimes it's alright!
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Old 1st September 2011, 03:55 PM   #7
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Interesting idea. Of course i am wondering if size of slot is optimal and if there are even ways of figuring it out? I also can't help but wonder how two 15" drivers per baffle would sound simply facing forward compared to the slotted system.

I wonder if the speaker can be slimmed down by bending the sides of those wide baffles? May not help the Lowther's response but would it hurt the 'bass system's' response? I can picture 8 or more woofers from floor to ceiling in corners filling a room with incredible bass while maintaining a slim footprint.

Thanks for sharing. It's probably a good idea. Hopefully others will wrap their minds around this and move the idea forward.

I need coffee!
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Old 1st September 2011, 04:22 PM   #8
Rudolf is offline Rudolf  Germany
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Quote:
Originally Posted by Godzilla View Post
It's probably a good idea. Hopefully others will wrap their minds around this and move the idea forward.
It has already been done:
Click the image to open in full size. Click the image to open in full size.
The Visaton Grand Orgue is simply a stack of Ripoles with a short line array of FR speakers in front of it.

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Old 1st September 2011, 05:09 PM   #9
Pano is offline Pano  United States
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Is this why Nelson bought all those cheap 8" woofers at P.E.?
$5 woofers at PE might work on OB...
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Old 1st September 2011, 06:04 PM   #10
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hi,
I looked at the amt-3 from Nelsons build,got a question? A picture from the front of a built speaker would tell me ,but is there one slot for each 2 facing drivers ? like 2 drivers in one slot,so you have 3 slots?or is there just one big slot 2.25"X30, I don't know if it would matter too much,the pressure comes out of the slot when they push and back in when it pulls,Thanks!!!!!
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