Shielding with Iron...?

[erinrobb]

I'm trying to shield my TV from an unshielded speaker I'd like to use as a center channel. Obviously there's the bucking magnet option, but I've read there is often a change in speaker voice -- which would neutralize the whole reason I'm using the unshielded speaker (matches the L/R fronts).

Has anyone ever just put the speaker on an iron shelf right above the screen? Wouldn't that take care of any magnetic field that might damage the TV?

[F1nut]

Ok, I'm no expert on this, but I've never heard a thing about bucking magnets changing the voice quality. Do you have the article? Iron is magnetic, so I think you would need a non-magnetic metal, but I have no idea if that would work.

[trubluluc]

I also think iron wouldn't be the best choice.
Think you would want to use an insulating non conducting material, foam or rubber or?

-Luc