Panasonic TX-L37S20BA sound help?

I've got a Panasonic TX-L37S20BA,

Tv is great,  but I have to adjust the sound settings everytime I change input :(  i.e. one setting for all inputs

I've read the manual and cant find anything, is there a way to set different sound setups for different inputs?

hope this makes sense

Cheers

Jak