Quote:
Originally Posted by dolsey01
I'm experiencing the exact same thing on my Prime with a Grado Reference Master. I had a Zephyr previously and I can't say when it started because I was primarily using my Martin Logans with the woofers not really in sight, but lately I've been listening to a pair of Sonus Faber Venere 2.0 and noticed the woofer pumping one night. I haven't spent the time to try and figure it out, there had been too many recent changes to account for. Mine is on a SRA platform, but previously had been on a Maple cutting board. I had been using Anti-Skate but now I'm not. I added the Dual Pivot but experienced the same thing when removing the dual pivot. So many variables and I just haven't had the time to troubleshoot.
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cartridge / tonearm compliance issues perhaps ?