yeah i had 6.5" Hertz splits in the back, had to modify/cut the plastic holder a bit to get them to fit properly though and i think some the holes didn't line up exactly in the plastic holder as well, also I left the restraint bars in over the speakers and i found (when i took them out) that the speaker was actually coming up and just hitting the bracket so now there are 2 small divets on the cones (no biggie), but now I have jaycar 6x9" in the back on an mdf shelf and they shit all over the splits