There is no "hole for wires" in the T-bracket but you can fit wires behind the speaker OK as long as you don't use banana plugs. I think the 5-way jacks on the back of the QS speakers are angled to make this easier.

M60ti, VP180, QS8, M2ti, EP500, PC-Plus 20-39
M5HP, M40ti, Sierra-1
LFR1100 active, ADA1500-4 and -8