My EP500s do not thump when I turn them off. My EP800s do thump when I turn them off. I did not have a problem where it sounded like air was going through them when they were not playing music though.

Quick questions though... Has anyone else noticed the lack of the trim dial (flat, half full) and more importantly the fuse holders? Where are the fuses for the EP800, on the inside?

LFR1100 Actives,QS10HPx2,QS8x2,EP800,M3x4,M3x2 (Wood),M5HPx2 (Wood),AxiomAir,ADA1500-8,ADA1500-7