I have a ? regarding the location

[mys_iii]

of the power cord of my amplifier. It seems awefully close to the speaker cables on the left side. It's probably a distance of about 1/4". I don't know which genius designed it that way but I was wondering how much of that might "bleed" into the music coming out of the speakers?

Thanks

 

[Ampdog]

Mys iii,

When you say somebody designed it that way, I presume you mean inside the amplifier. (If outside, the point arises that you can then shift the mains cord?) Inside the amp the length in question would probably be too short to worry about.

The loudspeaker output impedance (not the 4/8 ohm, but the amplifier output impedance) is usually so low that mains cable in close proximity cannot induce anything there. (I am talking of usual domestic use, not where you run them together for tens of meters - not saying that would influence, but I have no experience of that. Only such an instance seems to be very unlikely.) Also, do you hear any hum - if not, then not to worry.

But to explain exactly, perhaps you can reply re the first paragraph; distance of "closeness", etc.?

Regards

 

[mys_iii]

Mys iii,

When you say somebody designed it that way, I presume you mean inside the amplifier. (If outside, the point arises that you can then shift the mains cord?) Inside the amp the length in question would probably be too short to worry about.

The loudspeaker output impedance (not the 4/8 ohm, but the amplifier output impedance) is usually so low that mains cable in close proximity cannot induce anything there. (I am talking of usual domestic use, not where you run them together for tens of meters - not saying that would influence, but I have no experience of that. Only such an instance seems to be very unlikely.) Also, do you hear any hum - if not, then not to worry.

But to explain exactly, perhaps you can reply re the first paragraph; distance of "closeness", etc.?

Regards

I am referring to the outside of the amp where the power cable plugs in and where the speaker wire is connected. It is very close to the speaker cable on the left side. I have carefully routed all power cables to keep them as far as possible from the interconnects. Unfortunately, I can't quite move the power cable. To give you an idea as to how close they are, when I tighten the speaker cable connections, my finger hits the power cable connector and I can't continue tightening. I also hear a hum through the speakers IF I connect my TV audio output to my preamp.

Thanks.

 

[markw]

Ampdog gave very good advice.

The proximity of the cable to the speaker outputs has no audiable effect. The TV hum is another issue entirely, which is not related to the power cord location. A ground loop perhaps, or possibly a design issue with the TV itself, but it has no relation to the power cord.