Newbie hook-up question w/ ARC PH-3 SE


I've just purchased a second-hand ARC PH-3 SE. I hooked it up to my LS-2B MkII, and an old swiss-made Lenco turntable that I borrowed from a friend's dad. When I turn the system on (and volume up), all I hear is a loud hum coming out of my speakers. Did I connect the ground incorrectly? When I disconnect the turntable from the pre, the hum disappeared.
gundam91
Try not connecting the ground. I have a PH3 SE and Ref 2. It sounds MUCH better without the ground connected. Also if you bought the PH3 second hand, someone might have loaded it innapropriately for your cartridge.
This combination (Lenco + AR PH-3 SE) is analagous to putting a 2-stroke motorcycle engine in a Mercedes. The critical issue is what cartridge is in the Lenco. Then, make sure that the PH-3 is set up appropriately for gain and load.
Other people at a different forum have also suggested that it is a ground loop problem. I will check again.
I'm not familiar with your gear, however it sounds like a ground loop problem. Does your pre have a ground post for your table? Wish I could be more helpful.