#1
If the tab says tune down 1 1/2 steps (C#) does that mean i only need to detune the top string (low E)?

Thanks
#2
usually it means u downtune the whole guitar. but thats a lot of tuning... im sure you will have to use at least strings that are one step thicker than the ones you use in standard tuning
Ibanez K7
JCM 800