Cartridges with brush good for subsonic problem?

[E-Stat]

Anyhow, on my Ariston, I get a lot of pumping of the woofers.

I would begin by looking at the cause of the subsonics. I, too have an Ariston (RD-11s) and do not get subsonic garbage. What arm and cartridge are you presently using? Perhaps your combination is a poor match in terms of resonant frequency.

rw