I have a Thorens TD 125 mkII with SME 3009 imp. Fitted with Shure m97.
When playing at normal levels no problems. But when I crank up the volume, there is a acoustic feed back.
I have tested the following:
- I shut down the player so it stops spinning. When I place the needle on the record some place. The feedback comes when I turn up the volume to approx 90-100%. Below this volume. No problem.
- If I lift the cartridge the FB dissappear.
So apparently this is not a hum problem. And not related to vibration from spindle or motor.
If I pull the mains plug to the TD125 the problem is very reduced but not completely gone.
Help appriciated. Thx. Soren from Denmark. Amp NAD M33
When playing at normal levels no problems. But when I crank up the volume, there is a acoustic feed back.
I have tested the following:
- I shut down the player so it stops spinning. When I place the needle on the record some place. The feedback comes when I turn up the volume to approx 90-100%. Below this volume. No problem.
- If I lift the cartridge the FB dissappear.
So apparently this is not a hum problem. And not related to vibration from spindle or motor.
If I pull the mains plug to the TD125 the problem is very reduced but not completely gone.
Help appriciated. Thx. Soren from Denmark. Amp NAD M33