Jim,
Until my new tri-wire speaker cables arrive in a week or so, I can't try anything(the old speakers were sold this week), but I will try running a grounding wire from preamp to power amp chassis.
I did already run a grounding wire from one amp chassis to the other amp chassis, per suggestion from the amp designer.
I'll post again after trying that(as well another preamp), and we'll see what progress is made. Thanks,
Spencer
Until my new tri-wire speaker cables arrive in a week or so, I can't try anything(the old speakers were sold this week), but I will try running a grounding wire from preamp to power amp chassis.
I did already run a grounding wire from one amp chassis to the other amp chassis, per suggestion from the amp designer.
I'll post again after trying that(as well another preamp), and we'll see what progress is made. Thanks,
Spencer