Turntable hum

If I hook up the grounding wire from my turntable to my amp the hum gets noticeably louder. What gives?

Yale

yaluaka04-18-2019 8:33pm

yaluaka OP Details Discussions Posts This discussion Message User 38 posts 04-18-2019 at 09:45pm Copy Comment URL Report Comment Edit Delete Yes Miller, good thought but everything is.
yaluaka OP Details Discussions Posts This discussion Message User 38 posts 04-18-2019 at 09:07pm Copy Comment URL Report Comment Edit Delete It does have some hum with the motor on, louder when ground is connected. I have not checked what the ground wire hum situation is with the motor off. It is a Gates CB 77 otherwise wonderful.
yaluaka OP Details Discussions Posts This discussion Message User 38 posts 04-19-2019 at 04:08am Copy Comment URL Report Comment Edit Delete Oh and the hum does not change in relation to the tone arm.
yaluaka OP Details Discussions Posts This discussion Message User 38 posts 04-18-2019 at 11:12pm Copy Comment URL Report Comment Edit Delete I wouldn’t have thought of that one! But no, it is a stereo cart, Denon 103.
yaluaka OP Details Discussions Posts This discussion Message User 38 posts 04-19-2019 at 03:38am Copy Comment URL Report Comment Edit Delete Thanks so much everyone for your thoughts! I will check these out tomorrow when I’m at work as I brought this turntable in to work to replace a Thorens 135 that stopped working. It is going through the phono input of an Ampex integrated amp into powered Genelec speakers.