Woofers getting workout, but no bass

Do you know what is the port tuning? My guess it is between 25 and 35 Hz - otherwise you would not have such a problem even with vinyl, which I agree does tend to have some spurious LF due to the mechanical rotation of the disc once every two seconds...

Pain? Perhaps at times. However, how does it sound to you? Warts and all, it still sounds better to me than any other format.

Madfloyd-
Did you ever get your rumble fixed?

I'd suggest the KAB rumble filter. I had the same problem, and not only it most likely affects the sound adversely, but it might also with time damage the speakers' voice coils since the woofers expand uncontrollably.

At first I thought I noticed a slight difference in sound upon installation of the filter (slight lessening in bloom or thickness perhaps), but now I think the sound is tighter and more detailed. All in all, when you weigh the pros and cons, I'd go with the filter before doing anything else as you have not much to lose but you could possibly benefit significantly. You have a world-class set up; I think you can spend another $160 to possibly get the best out of it.

Wow, this two year old thread is what I am experiencing right now

I also have woofer pumping to a great degree

Triplaner arm, zyx cartridge

I have records which don't appear warped but have slight air gaps between the record and the platter as the table spins (coupling issues?)

I also have a Doshi preamp which rolls off at a very low freq. There is the option to change out the capacitors on the phono pre although Nick feels it affects slightly higher freqencies.

Mine isn't positioning - passed the placed the needle on the non spinning record test.

Placed a nickel on the headshell and couldn't tame arm / cartridge resonance.

May try a TT periphery clap, but not sure it would fit in between my platter and triplaner. Also the risk of breaking a Universe may be too much to try.

My Salk Soundscape 10s go down to 22 hz at 1.5 dB down. Is there really usable music down there outside of Saint Saens Organ Symphony #3 ( not HT )?

Seems to be robbing a bit of my amp power left for musical dynamics

The cartridge and arm are known to work very well together.
Starting to lean towards rolling the doshi off higher.
Any other suggestions?