That static electricity charge buildup in yourself is getting grounded to the RCA's now. When a static charge like that does get grounded, you will get some noise, when done on your system. You could discharge yourself touching some other metal first, to eliminate the pop. I doubt you compromised the sound.You could see if there is a ground screw on the preamp to ground it to also, and see if it does better.
Grounding question and static pops too
Hello gang,
New ( to me ) VPI Aries MK I w. JMW 10 arm. Running a Dynavector D-17 MK II cart. and Dyna P75 MK I phono pre. Using shielded RCAs from the Arm box to the P-75. Using a copper ground line from the arm box to the P-75. Almost no hum until I touch the arm, VTA adjuster, arm box etc. Basically if I tiuch anything metal a slight hum comes from the speakers. I lifted the ground on the motor and no change. I then ran a copper ground line from the arm box ground lug to the outer sleeve of one of the RCAs and bingo! NO hum at all. Even the barely audible hum that was present before I would touch the metal parts of the arm is now gone.
Great news right! The odd thing is if I touch ANY metal on the arm, platter, motor, spindle etc. and there is ANY static on my body, then the static arc makes a loud POP in the speakers. WTH?
Basically my questions are :
1. Have I compromised the sound in ANY way by connecting the ground lug on the arm box to an RCA ground?
2. How in the heck does the static spark "pop" get into the system if it is grounded? Should that energy not run to ground?
Happily spinning wax.
New ( to me ) VPI Aries MK I w. JMW 10 arm. Running a Dynavector D-17 MK II cart. and Dyna P75 MK I phono pre. Using shielded RCAs from the Arm box to the P-75. Using a copper ground line from the arm box to the P-75. Almost no hum until I touch the arm, VTA adjuster, arm box etc. Basically if I tiuch anything metal a slight hum comes from the speakers. I lifted the ground on the motor and no change. I then ran a copper ground line from the arm box ground lug to the outer sleeve of one of the RCAs and bingo! NO hum at all. Even the barely audible hum that was present before I would touch the metal parts of the arm is now gone.
Great news right! The odd thing is if I touch ANY metal on the arm, platter, motor, spindle etc. and there is ANY static on my body, then the static arc makes a loud POP in the speakers. WTH?
Basically my questions are :
1. Have I compromised the sound in ANY way by connecting the ground lug on the arm box to an RCA ground?
2. How in the heck does the static spark "pop" get into the system if it is grounded? Should that energy not run to ground?
Happily spinning wax.
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