Dale, since no one is jumping in, I'll give an educated guess. They are labeled "ground" and "earth" and one is probably the ground for the arm and the other for the chassis.
As to the other part of your question, the purpose of ground management is to minimize primarily hum. So I would try them seperated and unseperated and tied to the phono preamp ground or preamp ground. You will do no harm, simply choose the way that gives you the least hum.
Happy listening.
As to the other part of your question, the purpose of ground management is to minimize primarily hum. So I would try them seperated and unseperated and tied to the phono preamp ground or preamp ground. You will do no harm, simply choose the way that gives you the least hum.
Happy listening.