PROBLEM: Making a low cut with the Eq Eight, makes my track clip, why?

PROBLEM: Making a low cut with the Eq Eight, makes my track clip, why?

Why ?
when i cut frequencies the db of the track becomes higher, it doesn’t make any sens

There’s a video explaining my problem:

(Sorry for the 2 threads, at first i thought the first one wasn’t posted because i was on my iphone)