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@alice-dsl.net> a écrit :
>
>> On Mon, 6 Mar 2017 09:58:41 +0100, Dominique Michel wrote:
>> >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.
>
>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.
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:
>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
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Received on Mon Mar 6 16:15:02 2017
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