Gandhi wrote: 
> Regarding cable directionality, my analog electronics teacher a loong
> time ago taught me the following.

I was just discussing this with a friend, who's a qualified electrical
engineer, and whilst he agreed with:

> In a shielded signal cable, the shield is only connected in one end to
> avoid a ground loop, which otherwise might result in hum

he had problems with:

> The best noise suppression is achieved when the shield is connected to
> the appliance with the most powerful power supply unit, which would
> often be the amplifier. 

and could think of no reason why this might be the case.

So we'd also be very keen to hear from anyone who might shed some light
on that...


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