Hi Tony
I like the sound I get when I use the Logitech sub only with my JBL Eon 10G2's.
I am not fond of the sound of the satellite's. Not enough mid range or depth to the sound to suite my taste.
For anybody that wants to try just the sub with other speakers, all I do is to plug it into the headphone jack and the regular speakers out of the L and R Main on the Tyros in my case. It makes for a quite a combination.
Best
Scott