ARRRRGH! Someone please help! Iv finally decided that M&K 150s are going to my new Front left, right and center! Iv listened to them but the hifi store didnt have my amp (Yamaha DSPZ9) so I had to listen to them on a different amp! But iv been assured my Z9 will do them justice, though feel im only being told this as they want the sale! My Z9 is rated at 6 - 8ohms and the M&Ks are 4ohms and I hear are very thirsty for power! I spoke to Yamaha technical today and his words were: 'SHOULD BE OK' Errrrr, ok! Doesnt fill me with confidence!!! Has anyone used the M&K S-150s with a Yamaha Z9 or similar ohm rated amp??? Will they sound better being used on an amp with the correct ohm rating!?! Pls help guys!!