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Old 10th October 2003, 10:07 AM   #1
akhlan is offline akhlan  France
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Question magnetic insulation

Hello,

In first, congratulations for you and this forum, full with thing very interesting.

It's one of my first post on this forum and I hope to find of the assistance near you.

I am making me a sub with two PR380M0 from Audax and considering the size of volume, I would like to put this sub under my television.

My question; I would like to know if you know a means of isolating my television from the magnetic fields send by the magnets of PR

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Seb
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Old 10th October 2003, 11:45 AM   #2
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You could try putting a tin can over the outside (but not touching) the magnet assembly. Haven't tried it myself but it would not cost much.
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Old 10th October 2003, 11:47 AM   #3
yeti is offline yeti  Germany
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Default tin can

I tried it out with a 800ml Ravioli can.... worked out well.
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Old 10th October 2003, 11:49 AM   #4
Guss is offline Guss  Canada
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If I remember correctly there is no official method to shield an unprotected speaker. I heard of using alu ductape on the walls but, if you prefer eating ravioli .

If you don't have enough space try at least placing your sub in a corner, where you woud get bass extention.
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Old 10th October 2003, 11:52 AM   #5
akhlan is offline akhlan  France
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thanks

I'll be made small case covered with aluminium, copper, of iron... with a tweeter inside and I'll try to approach it my television and I would see well.

I keeps you informed

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Seb
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Old 10th October 2003, 12:07 PM   #6
SY is offline SY  United States
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There are two legitimate ways to do this:

1. Use magnetically shielded drivers. Audax makes a line (gamme) of them.

2. Use an auxilliary magnet, something of similar size and field strength as the speaker's magnet. This magnet is attached to the back of the existing magnet with polarity such that the two repel one another. This "pushes" the speaker magnet's stray field back into the speaker motor and away from the outside.
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Old 10th October 2003, 12:12 PM   #7
akhlan is offline akhlan  France
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Yes, I had thought well of putting an auxilliary magnet but considering the size, I do not know too much how to fix it

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