Turntable cover


If TT has attached cover which swings up, what position should it be in when playing? How does it affect the sound in either position? Or should I remove the cover altogether? If I do, how do I keep the TT free of dust?
TIA for your replies. 
gg987

Showing 3 responses by gg987

The dust cover is not so easy to take off and on. If I prefer the way it sounds without the cover, I'll probably just leave it off.