grounding

wow, you can not believe huge difference of sound when you correctly ground all of your hifi components.
Just ground all of components (like cdplayer) that don't support IEC power cord (connecting their body to earth) then see the difference in mid/high frequency and stereo image.
my friend grounded his cdplayer NAD C541i and now it turn up volume 10db more without breaking sweet and stressing the sound.

I think for highend systems grounding is so important.
What's your idea?

 

If the component is not designed to have a ground, as in it only has a 2 core cable, you should not earth the equipment.
Equipment that is not earthed is called double insulated, it can be dangerous to ground this.

 

So , you can guess whos tried this then
It was one of my original experiments , I even connected them to an earth rod .(I was on particuarly potent tablets at the time )
And for me , absolutly no discernible difference at all .

 

In essence it is OK, problem arises if there is a hickup elsewhere, it can make the chasis live.

Were the pills good?

 

not 1 but possible 2 breaches of BS7671,they must of been some good pills

 

Judging by the advice that I recieved from both you and Andy , I probably was into double figures by the end of my experiments .
The pills were very good at the time (I was on them for 2yrs) , but the only warning I was given by my local mental health athority was to be on the look out for "excessive happiness" .
they never pointed out anything about excessive spending or mad projects with leccy and no qualifications .
Fortunately I harmed no one and I removed ALL the wiring , etc before i moved .
Needless to say , when I get round to finally sorting my mains , I wil be employing a qualified electrician .
And I,m on far more gentle tablets thes days

 

I'm sure sound difference will be huge, just test it

 

Sound difference insignificant if you're dead.

 

amir
It *may* make a change, but it is dangerous!

 

why it should be dangerous?

 

because you are connecting an isolated metal chasis to a conductor.

 

Interestingly though, there is a terminal on the back of the S300 marked "ground". The manual says that in the case of hum or RFI you should connect this to an earth rod. It is double insulated also.

 

Isaac,
is the grounding post isolated from the chassis?

 

I will jump to Amirs defence a bit , here .
When i tried it , it wasn,t an idea of mine , but something suggested in one of RA,s little booklets . (the power and the glory?)
It,s a while back and my memory could be a little fuzzy , but I think the gist of the booklet was to replace your double wall socket with an RA socket (with the extra earth connection ) then connect all your kit to this earth via wires coming from the chasis of the kit .
I seem to recall he felt it was an especially worthwhile tweak for double insulated kit .
His seperate earth rod suggestions were floating about there as well .
My first experiment connected all the chassis' to the earth pin on a normal plug which was then just plugged in .
I must say I could not hear any difference .
I then installed the seperate earth and connected to this .
I still didn,t hear a difference .
I abandoned this experiment at this stage .
I,m sure RA would have researched this advice before putting it into a booklet .
But of course I could be wrong .

 

No penance, it is not isolated at all. The manual says that it is bonded electrically to the chassis.

 

maybe the mains feed side of things is double insulated within the unit, otherwise, stuffed if i know

 

under BS7671 (wiring regs) its is not permited to conect any double insulate equipment to an earth,the reason being if a fault to earth occurs elsewere ,parts which are not designed to withstand low voltage (50-1000v between conductors or 600v to earth) may become live.As for earth rods its not olny the regs that have sevral rules regarding there use,but also the electrical supplies act (a statutory set of rules that if broken can lead to your supply being removed),put simple if your incoming supply dosnt already have an earth rod dont add one.

 

I'm an electrical engineer and in our books i read chassis of every electrical equipment is it's zero voltage level. if i connect chassis of fully balance design electrical equipment like krell amplifier to earth, it may be dangerous.