[labz]

I agree with CarlaDarla, since you have powered speakers the best solution would more than likely be to turn the speaker volume up and keep the phones volume lower.

40-70% You will achieve better quality sound from your speakers and still be able to hear your phone if you forget to adjust settings later. powered speakers are designed to receive "line level signal" which is lower than % have even mentioned.

I dont own this phone so i cant speak for any settings it may have :-/

and for some reason i chose this to be my first post in 2.5 yrs as an active reading member. guess i saw my chance to help(audio engineer and producer)