Yes, remove the base from the speaker and then attach the base to the ceiling first… after the base is attached to the ceiling insert the screws that you used to attach the speaker to the base into the base, but don’t tighten them all the way down, leave them loose enough so that you can put the bottom of the speaker back onto the plate and then slide it forward and then tighten the screws down once it’s in the 3 slots properly. I say this because I had a speaker casualty because I didn’t have it properly tightened down when I was installing in and up completely breaking one of my speakers as fell 10 feet to the tile floor below…