Wiring / Layout question

kacernator · 22nd January 2009, 06:19 PM

Hi,

is it ok to route the wires, that they are touching the chassis? Or is it better to route wire about 1 cm above chassis? Is there significant (audible) capacitive coupling between the wire touching the chassis?

kacernator · 22nd January 2009, 06:32 PM

My wires which are touching (routed along) the chassis are just B+ and ground return wires. Will my amp sound better, if those wires will not be touching the chassis?

HollowState · 22nd January 2009, 10:32 PM

Quote:

Originally posted by kacernator
Hi,
is it ok to route the wires, that they are touching the chassis? Or is it better to route wire about 1 cm above chassis? Is there significant (audible) capacitive coupling between the wire touching the chassis?

I say it is perfectly ok to run your wires along ths metal chassis. The filament wires should be twisted and closely hug the chassis away from signal lines. Signal lines, which are usually high impedance, should also be kept short if possible. If you have to cross a filament wire, do it at 90º.

Quote:

Originally posted by kacernator
Will my amp sound better, if those wires will not be touching the chassis?

I doubt very much that you will be able to hear any difference. While technically there is some capacitance generated between the wires and chassis, for the most part it is very tiny and can be discounted. Remember, this is audio and not RF or beyond.

ray_moth · 22nd January 2009, 10:53 PM

I agree with Hollowstate. The only time I think it might matter is if there are ground currents running around the chassis because of multiple earthing points. That might caused induce hum in nearby wiring.

kacernator · 23rd January 2009, 06:29 AM

Thank you guys very much!

22nd January 2009, 06:19 PM	#1
kacernator diyAudio Member Join Date: Jan 2008	Wiring / Layout question Hi, is it ok to route the wires, that they are touching the chassis? Or is it better to route wire about 1 cm above chassis? Is there significant (audible) capacitive coupling between the wire touching the chassis?

23rd January 2009, 06:29 AM	#5
kacernator diyAudio Member Join Date: Jan 2008	Thank you Thank you guys very much!

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22nd January 2009, 06:32 PM	#2
kacernator diyAudio Member Join Date: Jan 2008	My wires which are touching (routed along) the chassis are just B+ and ground return wires. Will my amp sound better, if those wires will not be touching the chassis?

22nd January 2009, 10:53 PM	#4
ray_moth diyAudio Moderator Emeritus Join Date: Jan 2004 Location: Jakarta	I agree with Hollowstate. The only time I think it might matter is if there are ground currents running around the chassis because of multiple earthing points. That might caused induce hum in nearby wiring.