so my this guy keeps telling me that after you screw the subs into the sub enclosure, you have to do something with the battery and the sub to vacuum/push out all the air. is this true? or is it ok to just play after sub is in box? never built one, so jw.

 

Just play. Tell him to put down the crack.

 

LOL. Never heard such nonsense in my life.

 

Gotta love kiddie psuedo-science...makes me laugh. Hah