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Pics new CNC'd back loaded horn using 4 inch drivers
Pics new CNC'd back loaded horn using 4 inch drivers
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Old 8th November 2015, 07:38 AM   #1
atilsley is offline atilsley  Australia
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Default Pics new CNC'd back loaded horn using 4 inch drivers

Taking the cues from my 8.0 inch "Petite" back loaded horn, I've created a new small horn sutiable for desktop use.

This will use the funky Aucharm "Hi-End" 4 inch neo full range drivers. Will they "defy Lowther"...? Not sure...we'll see.

Aucharm 4inch full range speaker paper cone real wood bullet Neodymium speaker driver 4ohm 15W-in Speakers from Consumer Electronics on Aliexpress.com | Alibaba Group

Tonight, I glued up all the internals.

Waiting for drivers to arrive.

A fun project.
Attached Images
File Type: jpg dry run.jpg (75.4 KB, 1464 views)
File Type: jpg first layer.jpg (117.6 KB, 1435 views)
File Type: jpg glue layer.jpg (114.0 KB, 1400 views)
File Type: jpg parts layout.jpg (112.7 KB, 1384 views)
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Old 11th November 2015, 09:53 AM   #2
atilsley is offline atilsley  Australia
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Cable and wool added.
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File Type: jpg wool and cable in 2.jpg (122.5 KB, 1244 views)
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Old 11th November 2015, 01:18 PM   #3
Bas Horneman is offline Bas Horneman  Netherlands
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Looking forward to seeing your progress pics!
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Old 11th November 2015, 04:40 PM   #4
Bare is offline Bare  Canada
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Lovely work there. Seem as Odd drivers tho.
Hope it works .
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Old 11th November 2015, 04:55 PM   #5
Cal Weldon is offline Cal Weldon  Canada
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Pics new CNC'd back loaded horn using 4 inch drivers
You never cease to amaze.
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Old 18th November 2015, 10:14 AM   #6
atilsley is offline atilsley  Australia
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SUCCESS



Playing first time, amazing.



I was struck by the detail/accuracy and bass response.



Being small, the speakers vanish, and produce a wonderfully large sound stage.



Cymbals can be a little splashy...but overall, a great sound for sure.



Artists like Jack Johnson, Diana Krall and Angus & Julia Stone amazing...as was Eric Clapton unplugged.



The big valve amp needed careful volume adjustment, as I didn't want to blow the drivers.



Do you like my kitchen stools used angle toe-in?



Tomorrow, I'll run the mic over them.
Attached Images
File Type: jpg wool and cable in 2.jpg (122.5 KB, 513 views)
File Type: jpg pair in room.jpg (78.7 KB, 681 views)
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Old 8th December 2015, 09:12 AM   #7
atilsley is offline atilsley  Australia
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New "Closed In" design now completed...this next build will be all Birch Ply with lovely Fostex FE109.
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File Type: pdf closed mini horn with holes.pdf (94.6 KB, 201 views)
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Old 8th December 2015, 03:18 PM   #8
perceval is offline perceval  Taiwan
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Did you get a chance to do some freq sweeps with the Aucharm drivers?
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Old 9th December 2015, 04:49 AM   #9
atilsley is offline atilsley  Australia
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Quote:
Originally Posted by perceval View Post
Did you get a chance to do some freq sweeps with the Aucharm drivers?
A few. Bass looked a little odd around 200hz, flat mids, and roll off around 16k

Next stage, cnc the new ply version
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Old 29th December 2015, 02:53 AM   #10
atilsley is offline atilsley  Australia
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Ply version started, with FE108EZ driver.
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File Type: jpg ply glue up 3.jpg (99.6 KB, 471 views)
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