6 Mar
2017
6 Mar
'17
12:24 p.m.
On Mon, 6 Mar 2017 11:52:11 +0100, Dominique Michel wrote:
Le Mon, 6 Mar 2017 11:11:09 +0100,
Ralf Mardorf <ralf.mardorf(a)alice-dsl.net> a écrit :
If we warn users to remove ground, we also should warn users to do any
special wiring, let alone forbidden wiring. Using the same multiple
socket for computer and amp is a single point ground, period. If this
shouldn't work, your wiring won't improve anything.
On Mon, 6 Mar 2017 10:52:24 +0000, Bill Purvis wrote:
On Mon, 6 Mar 2017 09:58:41 +0100, Dominique
Michel wrote:
If it work so, you are right. But when it doesn't work so, and that can
be happening in practice, you will have to improvise and for that, you
must be systematic by using only one ground connected nearest the audio
inputs. You must have 1 connection to the ground, and all
the equipments
must be connected to it.
Instead of following you wiring hints, the OP should follow my hint
to connect the computer and amp to the same main socket by a multiple
socket, ensuring that the main cables and audio cables are 100% ok. That amp is powered by from a mains socket in the
adjacent room and we
had very significant mains hum with it until I interposed an audio
transformer. Thus no direct ground connection between the amp and the
rest of the kit.
This is a workaround that should work, but might not be worth the
effort.
The OP would need 6 DI boxes for the galvanic isolation, one for each
channel. Instead the OP could spend the money to get a good pro-sumer
audio interface, to get rid of the crappy mobo audio device.
Regards,
Ralf