JBL Lsr305 loud 160hz in some songs


For example Symphony X - Of sins and shadows at 1:14 and 1:16 the 160hz range somehow goes super loud for a second i'm not sure if it's because my monitors are pretty close to the wall, i tried to move them maybe about 80cm away but i'm not exactly sure if it helped one bit. Or if it's my table because i borrowed the monitors from our tv and they don't have anything under them so that they have perfect connection with the table, and the table starts to vibrate at around 160hz when i tested with a frequency generator.
tofii
Concrete is your friend!
Post removed 
Yeah i put one speaker on the floor and the problem went away i guess i’ll mount them on the wall or get some kinds of isolation pads under them.