🚀 go-pugleaf

Paul Durrant <pdurrant@durrant.demon.co.uk> wrote:

> In article <1d8fgzi.1px4z941xgfh78N@baw9pub39.bluewin.ch>,
> bridgeband@bluewin.ch (Bridge) wrote:
> 
> > Thank you for your advice, but it seems slightly radical to go cutting
> > away at cables. Anyway, I've been able to confirm that it is an
> > earth-loop, 'cos when I have the HiFi plugged to my G3 and then I unplug
> > the monitor and computer the hum disappears. I felt awfully tempted to
> > cutting the earth wire.

If you're going to cut an earth wire, do it on the audio cable, *not*
the mains cable - that's hideously dangerous and very, very silly.

From my point of view (which isn't everyone's, I know), cutting the
screening on an audio cable is a trivial thing to do.  Obviously, if you
paid �40 for the cable you'll think differently, in which case the
sensible thing to do is by a cheaper cable and hack that about, or...
(see end)

[snip]

> A co-axial cable wouldn't help a lot. The interference is coming from the
> earth-loop in the shielding anyway - changing the shielding to around each
> wire rather than around both wouldn't make a lot of difference.

Change that to `No difference at all'.

> You got an answer to your problem. If you really hate the idea of cutting a
> cable, why not add a cable (socket<->plug) with a break in the shielding.
> Not too hard to make up, and if it doesn't solve the hum you haven't
> mangled your original cables.

This is probably best if you can make up or buy such a cable cheaply.

Rowland.

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