Grounding question for a somewhat convoluted setup

[seckatary]

Hey guys, I have a question about grounding in a setup that I want to use to play 78s. It's kind of convoluted, but I think it will work well once I get the grounding figured out. I don't have much technical knowledge about grounding, but I do want to make sure that I don't damage any of my components.

Here's the setup: I have a Dual 1009 turntable with a Shure M44-5 cartridge that goes into a non-powered RCA switch that I'm using backwards, so that I can send the turntable signal out in two directions. I have one signal going into a phono preamp for non-acoustic 78s (I realize this is a compromise for all non acoustic 78s). The phono preamp then goes into a Technics SA DA10 receiver.

Then, for acoustic 78s I have a line going directly from the switch into the receiver. When I want to play an acoustic 78, I turn on my equalizer that I have set up through the tape monitor. The equalizer boosts the appropriate frequencies for the acoustic 78.

What would be the best way to ground the turntable, the preamp, and the equalizer? Could I ground them all to the receiver? The receiver has only one ground post, but multiple screws which I could use on the back.

Additionally, I would eventually like to hook up a turntable to play LPs to this receiver. Would it be possible to have too many components grounded to the receiver? Thanks for any help, I know this is a bit much.

 

[cademan]

Unless you have any hum, you don't really need to ground anything. If it does hum with the turntable only, then you just simply ground the turntable to the receiver with a simple piece of wire. Anywhere on the turntable metal base and then to the any chassis screw on the receiver.

Input grounds are supplied between line level components and the receiver via the RCA patch cords. Usually it is only turntables that need to be grounded along with their RCA inputs.

 

[Mamrak1]

If you truly wish to ground all your audio items, I suggest you do a search on “star grounding.” This is probably the best approach to grounding your items.

 

[seckatary]

If you truly wish to ground all your audio items, I suggest you do a search on “star grounding.” This is probably the best approach to grounding your items.

I had read a bit about that. Am I understanding correctly that that would just mean grounding everything to one point on my receiver?

 

[seckatary]

Unless you have any hum, you don't really need to ground anything. If it does hum with the turntable only, then you just simply ground the turntable to the receiver with a simple piece of wire. Anywhere on the turntable metal base and then to the any chassis screw on the receiver.

Input grounds are supplied between line level components and the receiver via the RCA patch cords. Usually it is only turntables that need to be grounded along with their RCA inputs.

Thanks for this. I guess I should have mentioned that there is indeed hum in the setup. Grounding the turntable to the receiver eliminated some of the hum, but there is more hum that is noticeable in the system somewhere. I haven't done any more testing though, I was holding off while I posted here.