A:AnswerThe EF28 speaker has a threaded insert on the bottom which you can bolt the speaker to the top plate. If the speaker doesn’t have an insert then it would just sit on the vibration reducing pads.
A:AnswerThe EF28 will support a small to medium bookshelf speaker weighing up to 25 lbs. . If the speaker is flat on the bottom or again or has a threaded insert you could use this stand.
The EF28 is not height adjustable.
