@mijostyn @erik_squires Finding a meter and learn how to use it would be costly in time for me. it takes me days to buy anything because I have to see all available, reviews, comparisons, etc. then read, watch videos how to use it. It's not fun to be me when I'd rather get this mess together first and see,
Thought more grounds would be better, didn’t realize what the floating ground business was. I plan to try rewiring without using any of the grounding I added to the non-grounded chassis components.
Will leave all disconnected chassis ground wires that I added to components ( mentioned below in below discussion) nearby to more easily reconnect to test if I hear hum that wasn’t there before.
See EQ below, Recommendation is EQ to receive its power from PreAmp. Would this be due for floating GND? I have open filtered outlets left on Furman PST?
Last paragraph under TT, the motor housing mount to lead puck I grounded before, will not this time. But the motor, 2 wall warts, condor & Roadrunner are not actually attached in any way except by motor/platter belt(non conductive), so thought maybe wouldn’t hurt to keep that ground?
Will run all 3 wall warts (ww) and CD to Furman PST sharing the 2 ultra-sonic filtered outlets using Y splitters. Therefore 2 ww to one outlet, 1 ww & CD to other outlet. Leaving me 4 unused filtered outlets unless EQ is added.
VPI PRIME TT
The TT has GND nut. Added a 14 awg from TT bottom spindle nut to TT GND nut (per rec’s by a number of owners who say spindle never grounded). Plan to GND TT (as mentioned) to ground bar. TT Power plugs = 2 wall warts connecting to Furman PST-8 Digital Power station “ultra sonic” receptacles.
NOTE: PreAmp manual suggests grounding TT to PreAmp but if Hum develops to remove it. No plan to do this.
My TT has been upgraded with the Total Eclipse Package, from Sota Turntables. It includes: new Motor, Condor PSU, and Roadrunner (RR) tachometer. The Condor and RR each have separate “wall warts” and no grounding screws or wire from their small chassis or the motor housing. All 3 units interconnect with each other. The Condor also has ~1/4” contained power cable which couples and screws tight to the motor housing.
Previously, I ran a GND wire between the Condor & RR component boxes then onto the GND bar. Will not this time.
The new belt driven Sota motor within the original VPI housing is external to TT. The motors stainless steel housing has 4 rubber feet to inhibit crawl when running. I previously removed feet and pinned the housing to a 5” diameter x 1” thick puck of pure lead (to increase its weight).
Previously, I grounded this motor housing/lead junction to the ground bar. Plan not to ground this time.
CONTROL (PRE) AMP (Yamaha)
The Power Amplifiers manual suggests running its GND to the Preamps GND. Plan to ground Amp to PreAmp terminal and onward to ground bar as before. PreAmps Power cord to Furman PST-8D.
AMP (Yamaha)
Amp GND to PreAmp (as before, per owner manual). Power cord to Furman PST-8D.
EQ
No GND screw or wire. Will not run chassis GND this time. Per EQ Manual rec’s, will plug Power Cord into switched connect on PreAmp.
CD
No GND screw or wire. Will not run chassis GND this time. Power Cord to Furman PST “ultra-sonic” filtered receptacle
DAC
No GND screw or wire.Will not run chassis ground this time. Power cord “wall wart” to Furman PST “ultra-sonic” filter
I have Ground/Lift Switch set to GND.
From Manual:
Ground/Lift switch: When Grounded the Dacmagic Plus is connected to the earth connection of the PC directly. When Lifted the ground connection is made via a network designed to break any hum loops that may be caused by the source equipment.
We advise using the Grounded setting unless audible hum is experienced.