Ramon:

Mike's suggestions are great. And congrats on the Eros'. I would add:

Try getting 'em up off your wood floor. Spikes would work great but as a test try a couple pieces of scrap wood under the front and rear to see if there's any difference. Spikes made huge difference in cleaning up the bass on mine.

Jeff

Hi Jeff,

Thanks. The flooring is laminate. With concrete beneath. I will try to lift them with spikes.
Keep you posted.

Your port may be too short. Try to lengthen them little by little (1/4 in. at a time).