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phono hum

I have a stock Thorens 146 with a Luxman SQ-30U integrated amp. The TT and amp are sitting at the same level in my cabinet separated by only a 3/4 inch wood partition. So they are only 2-3 inches apart. I have a hum in both speakers when the volume is turned up close to normal listening level (30%). Hum increases with volume. As the tonearm moves toward the spindle (further away from the amp) the hum decreases. Phono cart is Signet TK5E. If I mount a Shure M97x the hum is less. I do not recall the hum when I had a Denon DL-110. The Signet is the best sounding of the 3. It appears that there is interference from the amp. Is there a way to block this interference? More wood, metal, or just more distance between the 2? Or, do I need to stay with MC carts? Any recommendations for MC carts? Thanks Tim
waxer

Showing 1 response by waxer

waxer OP
9 posts
 
OK. I turned the TT 90 degrees and the hum is mostly gone, except at high volume, well above listening level. At rest the cart is about 13 inches from side of amp. At end of play it is about 9-10 inches from amp. Until I find a better location for my equipment, I will have get used to using my TT from the side.Thanks for the help with this.

Tim
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