Make yourself a couple alligator clip wires about 1 meter each. Clips on both ends of the wire. Clip one from table to preamp. Then clip the other from Phono to turntable and switch them around to see which reduces the hum the most. You may even try the preamp chassis or wall screw in the middle of the wall plug. One of those combinations most likely will work and reduce hum 50% to near 100%. In some cases you would have to turn your volume up past 12 o clock to hear noise. If you don't hear any noise as your average point then you have achieved your goal. Sometimes if you have a suspended table attach the ground to it with success. Make sure it hangs loosely. Oh you don't need a heavy wire at all. Just good old copper wire will do. Good Luck!
cartridge loading
I am running a grado red with a project se II tube phono preamp. It is a mm cart that works on the tube box factory setting which I believe is 47kohm. I am getting some annoying hum and am wondering if any other settings on the tube box would be better. There are DIP switches that can be set for both mm or mc loading.
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- 11 posts total
- 11 posts total