Re: Audiophoolery?
I can't even imagine what is in there that weighs 46kg. Sand?
Actually, at one point I designed a security gate (the sort you see in supermarkets etc to stop you nicking stuff with a tag) with a class D power amp feeding the coils. It therefore needed a filter on the output. That had a monster inductor on a ferrite core, and it warbled irritatingly at low kHz as a result of magnetostriction.
Although, with the help of ISVR at Southampton I shut it up in an engineeringly satisfactory way, I initially proved the point by:
Filling the filter box with sand.
Worked just fine, apart from weighing lots. Although not 46kg by a long shot!
Last edited by Craig Sawyers; 20th Mar 2019 at 7:50 am.
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