Buzzing bottom E string LO-3

[Huw1952]

Excuse another newbie question, but I have a buzzing/vibrating bottom E string on my Larrivee LO-3. This happens when strumming quite hard. The strings on there are D'addario EXP 10 Extra Lights  .010- .047. Could it be the nature of the strings? ( I have used EXP 16s and Martin Lights before and didn't really notice the vibration)I have tried truss rod adjustment as far anticlockwise as I could dare and it still buzzes.
Any comments would be greatly appreciated.
Thanks
Huw

[Huw1952]

Forgot to add that it doesn't happen when a capo is on.

[GGBB]

Lighter strings vibrate with a wider arc at similar volumes so this problem isn't unusual.  If it only affects the open string, the nut slot is probably a bit too deep.

[carruth]

You are using very light strings. Try  12 to 54 size strings or heavier. The guitar will sound better too.

[Huw1952]

Thank you both for the reply. I was hoping it might be that.
Huw