AV By-Pass Connection Question ( Urgent )

toybidder2008

想請教吓有電流聲機會大嗎？

paulchung

toybidder2008 發表於 2016-11-21 16:25
想請教吓有電流聲機會大嗎？

你意思係米用左AV-bypass 會唔會有電流聲?

toybidder2008

paulchung 發表於 2016-11-22 00:58
你意思係米用左AV-bypass 會唔會有電流聲?

係呀！機會大嗎？

Szelong

toybidder2008 發表於 2016-11-22 09:32
係呀！機會大嗎？

如果成個電路係有干擾，就算去到2ch amp 都會有，因為都係由RCA 傳過去

paulchung

toybidder2008 發表於 2016-11-22 09:32
係呀！機會大嗎？

Point of view on electrical part, i think the current sound would be produced on speakers due to bad contact or magnetic field affected.

mdo

paulchung 發表於 2016-11-22 13:18
Point of view on electrical part, i think the current sound would be produced on speakers due to b ...

The noise is caused by a phenomenon called ground loop. It has nothing to do with bad contact or magnetic field. It is so caused by multiple paths to the ground. That is why some Ching would simply cut off the earth wiring to prevent it from happening. See below link for more info

https://en.m.wikipedia.org/wiki/Ground_loop_(electricity)

paulchung

mdo 發表於 2016-11-22 22:46
The noise is caused by a phenomenon called ground loop. It has nothing to do with bad contact or m ...

Noted. understood.  

I understand that interference ( 220V power create magnetic field to cut signal cable ) is affect extra low voltage system. Now i understood the ground loop is difference with interference.

However, thank you for your information.