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Original Message
RE: Ferrite
Posted by Dawnrazor on January 7, 2012 at 00:29:31:
Hey Stu,
Thanks for this post. It is very interesting!
The most difficult part, of course is effecting a good seal to prevent any leakage.
Yep that is tough, but I think I can solve that. It depends on the ICs you use or the speaker cable ends you choose.
Common audio wisdom has the cable fitting IN the connector with strain relief provided by the connector. Turn that on its head and put the tubing around the connector.
What I propose is unterminating one side of say an IC. slide this unterminated side through a tube whose ID is just a tad smaller than the OD of the connector. Put some glue on the connector and slide the tube up. Once you get a good seal, fill with ferrofluid. Terminate the other end and then seal the connector in the tube.
The choice of connector is crucial. Something like the Eichmann works great because it is smooth and tapered. With pvc tubing you can easily get a tight seal. Even better are rcas that screw on the bottom and not the top.
Done this for years with sand and a few times with liquids or gels. It is not too hard. You do have a bit of excess at one end, but you just make the cable into an "s" at that end and push it in the tubing.
See the pict. The connectors are in the tubing and held together by pressure and adhesive. Years of connecting and since the cables are sand filled they are heavy, but no mishaps.