@bstatmeister: thanks! Yes I was aware of the turning on sequence but completely forgot my amps were still on after done rearranging the cables.
Plug in preamp while amp is on caused very loud pop on speaker.
Did something really stupid this past weekend when I tried to rearrange the power cords and cables. Unplugged my preamp while leaving the amps on and when I plugged back the preamp there was a very loud pop coming from my speakers. The speakers played fine but is there any thing I should be concerned about the potential damage to the speakers? Any suggestion is greatly appreciated.