Hi,
I am getting ready to put together a RCA interconnect. I ordered some NEI-3001 + DG301 from Soniccraft.
3001 has 4 conductors, so the 2 red go to the tip and the 2 blue goes to the sleeve. I am not sure how to connect the shield, to the source side sleeve, or the drain side sleeve?
I am getting ready to put together a RCA interconnect. I ordered some NEI-3001 + DG301 from Soniccraft.
3001 has 4 conductors, so the 2 red go to the tip and the 2 blue goes to the sleeve. I am not sure how to connect the shield, to the source side sleeve, or the drain side sleeve?
Expanded polyethylene dielectric, with a copper center conductor, is also good.
Did you read the part(s) where the cable is 10.6mm diameter and the connectors accept cable up to 8mm diameter?
If it's a short interconnect (say up to 1m) there is likely to be little or no audible difference, but it is worthy of experimentation.
Okay, you're good now with those.
As to connecting up the shield, it needs to be connected at the source end. Opinions do vary as far as connecting up the other end.
Did you ask Jeff Glowacki for his opinion on connecting up the shield. He's a good source of information.
I finished it last night.
I believe Neotech made the DG201 to fit the NEI-3001 mk2. Internally to the DG201 sleeve there are fine screw threads that fits the thickness of the NEI-3001 exactly. All that was needed was to screw the NEI-3001 casing into that. There is no need to use the compression screws to secure the cable at all. It was a perfect tightness.
I believe Neotech made the DG201 to fit the NEI-3001 mk2. Internally to the DG201 sleeve there are fine screw threads that fits the thickness of the NEI-3001 exactly. All that was needed was to screw the NEI-3001 casing into that. There is no need to use the compression screws to secure the cable at all. It was a perfect tightness.
I literally just received notice of this thread... Just in time to see it wrap up.
FWIW, we use the screws as customers are tough on cables 😉 And, while your mileage may vary, we generally connect the shield to Grd (return) at the source.
FWIW, we use the screws as customers are tough on cables 😉 And, while your mileage may vary, we generally connect the shield to Grd (return) at the source.
There is not a right or wrong answer here. People use balanced cable for single ended connection because it often sounds better, because they don't know better, because they are looking for a particular characteristic impedance, because they want to partially decouple the shield, because they want to float the shield. There are lots of possibilities.
Some balanced cables use larger gauge signal runs than most coax shields, so I would say not.
If DF96 meant that I misunderstood. I thought he was referring to when the return resistance was increased to reduce a ground loop current.
A coax shield is likely to have lower resistance than a signal wire within a cable, even if the shield uses thinner copper. Of course, you could have a thick twisted pair with less resistance than a thin coax.
I can't think of a good reason to raise the ground return resistance, as it means that any ground loop current develops a voltage here rather than somewhere else where it may do less harm.
I suspect that most people do it because it is popular. It is popular because a lot of people do it. Fortunately, in most situations it will do little harm.
I can think of one situation where a twisted pair inside a shield is appropriate for an unbalanced connection: when the source is electrically floating so a pseudo-balanced connection can be used. The most common example is an MM cartridge.
I can't think of a good reason to raise the ground return resistance, as it means that any ground loop current develops a voltage here rather than somewhere else where it may do less harm.
I suspect that most people do it because it is popular. It is popular because a lot of people do it. Fortunately, in most situations it will do little harm.
I can think of one situation where a twisted pair inside a shield is appropriate for an unbalanced connection: when the source is electrically floating so a pseudo-balanced connection can be used. The most common example is an MM cartridge.
Raising the signal return resistance on one channel interconnect can reduce the cross channel hum loop, not ideal, but simple.
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