Room Audyssey,how often?

[stringbean]

So I've done all i can,played around,crawled around the room and have a setup that i am happy with.Question is how often do i repeat the process?Every time i upgrade a component?Amp or subwoofer would be obvious but what if i only upgrade a center speaker,or speaker cables?Do i do the whole setup again,every time?

 

[joel]

 

[Necrite]

 

[LAV]

 

[perfectionist]

 

[stringbean]

 

[KenMasters]

 

[perfectionist]