Those were very nice and highly regarded speakers back in the day. I remember a time I was looking seriously at M3's. Your amp, as the other reasonable people on this thread have already told you, is seriously underpowered. If the M1's are really 83dB, then you will need some muscle, but it should produce very good results. Worth dealing with the speaker cable, but start with the amp, anything else will be a probably ineffective bandaid.