noviygera
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- Jan 21, 2021
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Hello,
I am referring to the unbalanced RCA cables + ground wire from the TT to the phono preamp. I have an SL1200 with MM cart and I need to replace the phono cable (old, loose molded plug)
The original's capacitance is 120pF for the 45" = 32pf / ft. Anything around that capacitance is ok. I started thinking about options.. Before ordering and soldering I'd like to find out what are your thought on the actual cable structure, since there are two that make sense to me.
1. Coaxial variety of low capacitance wire AND separate external ground wire, (the common approach)
2. Shielded twisted pair where the shield is used as the ground wire (no separate ground wire)
Can the shield be used as the ground wire?
I am not sure if the 2nd option is going to be too high capacitance due to shield being used as the ground wire?
How to measure capacitance of the shielded twisted pair wire?
Thanks!
I am referring to the unbalanced RCA cables + ground wire from the TT to the phono preamp. I have an SL1200 with MM cart and I need to replace the phono cable (old, loose molded plug)
The original's capacitance is 120pF for the 45" = 32pf / ft. Anything around that capacitance is ok. I started thinking about options.. Before ordering and soldering I'd like to find out what are your thought on the actual cable structure, since there are two that make sense to me.
1. Coaxial variety of low capacitance wire AND separate external ground wire, (the common approach)
2. Shielded twisted pair where the shield is used as the ground wire (no separate ground wire)
Can the shield be used as the ground wire?
I am not sure if the 2nd option is going to be too high capacitance due to shield being used as the ground wire?
How to measure capacitance of the shielded twisted pair wire?
Thanks!