[HomeBrew] Computer Speaker RFI

[R. Blackman]

Hello to the group,
I'm not sure if this is off topic or what...
I would like to install some amplified computer speakers in the shack.
The one's I have now have no shielding whatsoever, 2 conductor line chord
and
howl cq dx, cq dx....
I have layered tin foil inside the plastic cases, placed toroids on the
wires,
soldered a ground lug to the circuit board and grounded the beasts. No help.
I would like to throw them out  yesterday, and purchase some much better
ones.
Question:  Does anyone on list have a good suggestion / and or experience
with
a certain brand or model? The local computer shops in my area have no idea
what
I'm talking about and the few computer speaker web sites do not address the
problem.
Thanks, /Richard/ VA3NDO