SUB IN FRONT MAIN SPEAKER

[lussen]

i put my sub in front of my left main speaker is that right for placement the sub can it cause any problem for the sound

 

[The_Lhc]

There's no right or wrong about sub placement, you need to experiment to find out where the sub sounds best in your room. It might be of interest to note that REL recommend having their subs behind the front speakers though, at least as a starting point.