Pics new 'Altec' bass horns using CAD/CNC - diyAudio
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Old 8th July 2014, 03:28 AM   #1
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Default Pics new 'Altec' bass horns using CAD/CNC

Finally this project is back on track.



Collected all the parts on the weekend from CNC shop Project Station, with Euro Birch ply supplied from Brunyzeel.



Luckily, Camry has big boot...!!



I chose 4 circular ports which are similar in volume to a mid sized Altec cab. The size of the ports match a large cork bung (jar lid) I found on Ebay...so I can buy these for tuning if necessary.



Anyone spot an important hole cut-out missing....? Yes, the main driver cut-out on the 25mm MDF baffle...not sure what happened there....bummer. Fancy having to use a hand router...!



This version of my Altec bass horn (called the 820, due to cab height), will sit upright...but it can also sit horizontally.



The drivers are pristine Altec 515G's....I played these in the VOTT A7 the other day, and they sounded way cool.

Altec VOTT A7 using CAD and CNC



The top horn will likely be another Yuichi 290Hz model with 2 inch compression driver TBA.



A 'simple' but effective two way, which I'm hoping will sound really good. Will have active xover for bass, and passive second order for top horn.

Check out my 1/3 model of a CNC'd 10mm cardboard version.



Andrew
Attached Images
File Type: jpg parts in car boot.jpg (71.5 KB, 193 views)
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File Type: jpg post-103876-0-45505200-1391746608.jpg (91.1 KB, 67 views)
File Type: png sim.png (41.9 KB, 84 views)
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Old 8th July 2014, 11:07 AM   #2
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Some more pics of an initial dry run...got to do some minor adjustments on the rear supports.

I think the size of this cab is quite room friendly...820mm tall (or wide if lying down), around 700mm deep/wide.

Pretty heavy too...perhaps in the order of 70Kgs.
Attached Images
File Type: jpg assembled lose 1.jpg (101.9 KB, 60 views)
File Type: jpg assembled lose 2.jpg (105.2 KB, 58 views)
File Type: jpg assembled lose 3.jpg (93.3 KB, 49 views)
File Type: jpg assembled lose 4.jpg (101.5 KB, 58 views)
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Old 8th July 2014, 11:08 AM   #3
SNR is offline SNR  Canada
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Wow another set?
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Old 9th July 2014, 10:36 AM   #4
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Yep. Smaller than VOTT....more 'hi fi' and more room friendly.
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Old 9th July 2014, 05:55 PM   #5
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atilsley:

Thank goodness for CNC machinery !!!! Very nicely thought out and executed design !!!!
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