fabiospark
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- Joined
- Dec 4, 2022
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Hello everybody,
in my home recording studio (my living room...) I have a "musik making" corner with a PC (an Intel NUC) and a Focusrite 18i20 interface.
I have a shielded 1+1 RCA cable that run from two balanced outputs of the interface to a Rotel ampli RCA input on the other corner of the room.
The wires of the two channels run side by side, as in the cheap RCA stereo cables we usually find in the box when we buy something audio related.
Like this (look only at the cable, not the connectors):
To go into the interface TRS outputs I'm using a pair of these:
This wiring has always been a little noisy but since I got the NUC, when I switch it on, a strong RF noise is added so I'm considering to
replace it with a balanced (differential) wiring, then putting a stereo balanced-to-unbalanced converter near the ampli.
Here's a question:
1 - Can I use the two cores and the two shields of one stereo RCA cable like the one above to make one channel balanced connection, with a TRS on one end and another TRS or an XLR to the other end? (It dipends from the converter input connector). Or that kind of structure, with the two shielded wires running side by side, would not be that efficient?
2 - Is there any alternative consideration I should do before taking the balanced + converter route?
3 - I have in house an RGB cable with three single shielded wires: could be of any utility?
I noticed that while the interface has the earthing wire in the power cord, the Rotel hasn't, so I thought that could be a grounding problem, forcing the shield of the audio cables
to work as grounding conductor too, to ground the Rotel through the interface so I tried to connect directly the Rotel to ground but the noise didn't change.
Here is the wirings:
Thanks.
fabio
in my home recording studio (my living room...) I have a "musik making" corner with a PC (an Intel NUC) and a Focusrite 18i20 interface.
I have a shielded 1+1 RCA cable that run from two balanced outputs of the interface to a Rotel ampli RCA input on the other corner of the room.
The wires of the two channels run side by side, as in the cheap RCA stereo cables we usually find in the box when we buy something audio related.
Like this (look only at the cable, not the connectors):
To go into the interface TRS outputs I'm using a pair of these:
This wiring has always been a little noisy but since I got the NUC, when I switch it on, a strong RF noise is added so I'm considering to
replace it with a balanced (differential) wiring, then putting a stereo balanced-to-unbalanced converter near the ampli.
Here's a question:
1 - Can I use the two cores and the two shields of one stereo RCA cable like the one above to make one channel balanced connection, with a TRS on one end and another TRS or an XLR to the other end? (It dipends from the converter input connector). Or that kind of structure, with the two shielded wires running side by side, would not be that efficient?
2 - Is there any alternative consideration I should do before taking the balanced + converter route?
3 - I have in house an RGB cable with three single shielded wires: could be of any utility?
I noticed that while the interface has the earthing wire in the power cord, the Rotel hasn't, so I thought that could be a grounding problem, forcing the shield of the audio cables
to work as grounding conductor too, to ground the Rotel through the interface so I tried to connect directly the Rotel to ground but the noise didn't change.
Here is the wirings:
Thanks.
fabio