I'm setting up my 7.1 home theater surround sound. I bought some adjustable speaker stands for my rear satellite speakers. It came with 6 different mounting brackets, but none of the brackets seem to fit my rear satellite speakers. My speakers are Energy brand (made in Canada). They don't have a keyhole slot or a threaded slot. The speakers have a 1 inch "slit" on the bottom, 1/4" wide. I have no clue what kind of mounting bracket would work with these. Anybody have any ideas???? thanks!