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.
rogerhifi
@jond LOL... I feel like we are going to turn this thread into "what is the dumbest you ever did to cause severe damage to your stereo..."
Power amps: Last on; First off. Power amps: Last on; First off. Power amps: Last on; First off. Power amps: Last on; First off. Power amps: Last on; First off. Power amps: Last on; First off. Power amps: Last on; First off. Power amps: Last on; First off. Power amps: Last on; First off. Power amps: Last on; First off. Power amps: Last on; First off. Power amps: Last on; First off.  I will not write on the blackboard one hundred times: Power amps: Last on; First off.

";o )



Okay, my turn.  I plugged a speaker level output* from one amp into the output of another power amp.  Blew up all the output transistors in the second power amp. 

*or maybe that was a line output into another line output ?  Have succeeded in forgetting the details.