popping noise

When I turn on and power off my system I get a popping noise out of the speakers. Sound is great when playing, just when coming on and off. Is this a problem with the amp, preamp or speakers? Is their a fix's for this short of buying a new speaker, amp or preamp?
Thanks for the help
In what order due you turn your stuff On/Off.

If you are not doing it already, you should start with the sources and turn the amp on last. When turning off you should reverse the process.
thanks Jjrenman
its been the preamp on first then the sources and last the amp with volume down low each time. For off its the sources first then the amp with the pre amp last with the volume down low. Any other ideas
thanks pete
Your On sequence is OK but when turning Off the sources will often send a pop or spike. Since your preamp and amp are still On you may here a spike from that. However if you are getting the same pop during your On procedure I would have the amp checked out. There is usually a small cap across the power switch inside the amp that keeps the momentary voltage arc at the power switch from causing a pop at turn on.