HASK THE EXPERT AND THE MEMBER PLEASE HELP MEE

Good day i have the new yamaha rx-v871 receiver and i whant to change my speaker right now i have a big deal on the modaunt-short mezz5 for the center and aviano 6 for the front . my questions is

question 1 . i cant not try my receiver whit this speaker so it is a good match whit the modaunt-short

question 2 it is a good match in beetween the to serie

thank you very much and have a nice day .