| T.R | Title | User | Personal
Name | Date | Lines |
|---|
| 476.1 | Loudspeakers have powerful magnets! | SUBURB::POWELLM | Nostalgia isn't what it used to be! | Thu May 12 1994 11:13 | 10 |
|
Loudspeakers contain a large and powerful magnet in each drive
unit! The art of designing these is to produce the most powerful
magnetic field possible (with minimum leakage, of course) in the
smallest size. There is always leakage of some sort, but there are now
Loudspeaker systems on the market with magnetically shielded cases
which attempt to contain the leakage from the drivers to within the
Loudspeaker cabinet. JBL make some I believe.
MAlcolm.
|
| 476.2 | Linn to the resuce (again) | ESBS01::WATSON | Entropy: chaos at it's best | Thu May 12 1994 11:19 | 1 |
| Linn do some, the Sekret and Tukan I think.
|
| 476.3 | probably wouldn't fit tho' | WOTVAX::STONEG | Temperature Drop in Downtime Winterland.... | Thu May 12 1994 14:31 | 5 |
|
... Quad Electrostatics ??
Graham
|
| 476.4 | Visit Smiths | WELCLU::SMITHM | Think Global - Act Local.... | Thu May 12 1994 19:18 | 6 |
| There are a lot of companies making these speakers for the Home Cinema
market. Check the HiFi and Video mags in your local WH Smith's
Regards
Mike
|
| 476.5 | A "woking " remedy? | HANDVC::KKCHEUNG | | Fri May 13 1994 08:15 | 14 |
| Thanks for the comment.
re. -1, I read "What HiFi" frequently, but I don't think they
specify in their summary list whether a speaker is magnetically
shielded.
Could anyone suggest an elegant remedy? Because my friend's
living room is quite small, moving the speakers away is
not a practical solution. My "brute force" suggestion is to
insert heavy slabs of metal in between the speakers and the
TV (a heavy wok, maybe?).
Thanks again
-KK
|
| 476.6 | disperse the magnetic field | UPROAR::WEBSTERM | any old string | Wed May 18 1994 15:32 | 7 |
| KK,
Not sure ferous metal would do the trick. To shield the TV tube from
the magnetic field it may be better to place something that disperses
the flux not concentrates it, how about aluminium ?
Mike.
|
| 476.7 | mu metal is the stuff! | YUPPY::SEDTU6::KORMAN | tgif!! | Fri May 20 1994 11:59 | 0 |
| 476.8 | Suggestion ... | MSAM00::RAVI | | Wed Aug 03 1994 04:36 | 4 |
| A friend of mine suggested using aluminium foil as a shield. Not sure
if it will work ... but if it does... let me know
Ravi
|
| 476.9 | On the other hand, I could be wrong! ;-) | SUBURB::POWELLM | Nostalgia isn't what it used to be! | Wed Aug 03 1994 10:26 | 5 |
|
As far as I remember from my Physics days, Aluminium is non
magnetic and will simply be transparent to magnetic radiation.
Malcolm.
|
| 476.10 | dia-magnetic | UPROAR::WEBSTERM | any old string | Wed Aug 03 1994 17:32 | 10 |
| Mal,
Aluminium is definitely the opposite of ferrous materials in that it
disperses magnetic flux. Try sitting a Aluminium plate over a coil with
AC running through it, the repulsion is enough to lift a train and
drive it along, hey call it a linear motor ;-)
I think the correct term is dia-magnetic.
Mike
|
| 476.11 | Mais oui, mais oui! | SUBURB::POWELLM | Nostalgia isn't what it used to be! | Thu Aug 04 1994 13:37 | 5 |
|
Thanks for the correction Mike, should have remembered that! That
is the trouble with old age. :-)
Malcolm.
|