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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
choppi2003
7 posts
 
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. 



dunedain
9 posts
 
“on: pre>amp off: amp>pre”

So when using 12V DC triggers to your Amps from the Pre-Amp the power on order is satisfied, but not the power off? 

This is the way I’ve had it wired for ~ 17 years. Am I risking anything for this convenience?

Thanks


rogerhifi OP
71 posts
 
@choppi2003 congrats you’ve earned your star on this one.
rogerhifi OP
71 posts
 
@dunedain might want to check with the manufacture if the logic of orders reverse during power on and power off.  If the trigger functionality is provided for preamp and amp the manufacture should already take the sequence during on and off operation into account.
dunedain
9 posts
 
Thanks. I’ll check the manuals.
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