Need help solving a system problem


The equipment:

Martin Logam ethos
musical fidelity m6si integrated
musical fidelity nu vista vinyl phono pre
EAT C Sharp TT with a Kiseki Purple heart cart.

The issue simply put:  when I rest the needle on the record (record not playing) and I turn the volume up to the 12 o'clock position, I get an incredible amount of woofer vibration from the logans.  Same issue when playing a record. 

I've tried:
1.  better isolation ...keep in mind record is not playing so acoustic feed back is out of question.
2.  Speakers are 43 inches from the needle when on record from each side.  tried moving to max distance room will allow to no avail. prob still occurred
3.  tried a different table with different cart.  got same issue.
4.  Upgraded stand ...isolation again.
5.  tried different tonearm cables, different inputs on pre...same prob.

Any ideas are welcome.  I love my system just cant play it loud....and sometimes I like it loud.
polkalover

Showing 3 responses by polkalover

Just wanted to thank everyone for their input.  Here's an update:. I purchased Harrison labs 30Hz high pass plugs and although it allows me to play it a little louder the rumble still occurs at about the 2 o'clock position.  Once again not playing a record just resting needle on record.  So this leaves me with 2 options: 1. Spend some more scratch for the KAV rumble filter and see if that solves it or 2.  Sorbothane isolation feet for table.  Room reconfig. Is not possible..... additional thoughts, ideas are welcome
@rodman99999 
So based on this chart there's a compatibility issue which raises this question...see link https://positive-feedback.com/reviews/hardware-reviews/eat-c-sharp-turntable/

He had my TT set up and had great results.  I'm not thoroughly convinced that is the issue, but makes a case for the problem.
@rodman99999 it varies by LP but I usually keep it at -3.  The IEC has no effect.

@georgehifi it won’t come to that but it is a frustrating annoyance. Thanks for tips