Thanks for all of the suggestions. I think the idea that had the most chance of working was moving the TT further away from the speakers. It didn't really make a difference.
The best thing I've done so far is to use an extra rubber washer with the Delrin clamp. For those who own a VPI table, you'll know that the table comes with a single rubber washer which is put on first, then the record, then the clamp. I had an extra washer, so I put the extra washer on top of the record, directly underneath the clamp. That seemed to raise the feedback threshold well beyond the level I would ever listen to the music.
Btw, I've used MM carties before, Can't say I recall having the problem. Also, I used to use the Soundsmith Zephyr, a MI cartridge, and the Dynavector, a MC cartridge. Again, I don't recall experiencing the problem.
Just a thought -- I have a 3 gram headshell weight. I wonder if using it to increase the effective mass of the arm would make a difference??
Just thinking out loud here -- where the heck is the Delos picking up the ambient sound? Yes, there are motors throught the house and laundry room, but could that be the source? Or is it possible there is electrical inductance between the tone arm cables and maybe a power line that in some back is feeding a 60 Hz current back into the moving coil parts of the cartridge, thereby causing vibration to feedback through the system as Al described?? Al what do you think??
Thanks again.
The best thing I've done so far is to use an extra rubber washer with the Delrin clamp. For those who own a VPI table, you'll know that the table comes with a single rubber washer which is put on first, then the record, then the clamp. I had an extra washer, so I put the extra washer on top of the record, directly underneath the clamp. That seemed to raise the feedback threshold well beyond the level I would ever listen to the music.
Btw, I've used MM carties before, Can't say I recall having the problem. Also, I used to use the Soundsmith Zephyr, a MI cartridge, and the Dynavector, a MC cartridge. Again, I don't recall experiencing the problem.
Just a thought -- I have a 3 gram headshell weight. I wonder if using it to increase the effective mass of the arm would make a difference??
Just thinking out loud here -- where the heck is the Delos picking up the ambient sound? Yes, there are motors throught the house and laundry room, but could that be the source? Or is it possible there is electrical inductance between the tone arm cables and maybe a power line that in some back is feeding a 60 Hz current back into the moving coil parts of the cartridge, thereby causing vibration to feedback through the system as Al described?? Al what do you think??
Thanks again.