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Is speaker blown?
Is speaker blown?
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Old 6th February 2018, 09:33 PM   #11
diyAudio Member
Join Date: Sep 2016
Looks like t-nuts has the power to really mess up things. I had my first and unique experience at the project SS15MOD.

Fortunately my T-nuts were not pulling out, I bind them but as side effect when the screw is not properly aligned with the t-nut the joint will not be able to fastening, the screw point face will block itself forcing you to unscrew all and start again. Just after finish my project I remember about one common solution often used at vehicle industry, it may help many folks here and for sure I will use in the next project.

To avoid problems with t-nuts we should used screw with special point, it was initially designed to improve automated process, it has a kind of cone, or a big chamfer (if you prefer) that will guide the screw to the proper female thread and auto centering. Below you can find a sketch and a real image about it as example. It ca be found with different heads and different necks and I think it can fix issues related to t-nuts.

Click the image to open in full size.
Direct image link: https://s17.postimg.org/xb4ut51rz/Screw.png
Click the image to open in full size.
Direct image link: https://s17.postimg.org/yq6fhvq0f/P_20180206_155908.jpg
Click the image to open in full size.
Direct image link: https://s17.postimg.org/q7wzdkm2n/P_20180206_155919.jpg
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Old 6th February 2018, 11:09 PM   #12
MAAC0 is offline MAAC0  Portugal
diyAudio Member
Join Date: May 2010
One of my Behringer B115D sounded rattling. The woofer magnet on one side was loose. There was a tiny "paper sheet thickness" space between the gasket and the magnet. I've put a heavy load on the back side and glued all with Araldite. Working fine now.
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