4ch. amp rate @ 60wx4 is good enough for 1 set of comp speakers rate @ 110 max RMS power output?

Question

the speakers are under power or they going to be ok.

Answer 1

When a speaker is rated at 110 watts RMS, that means it's the maximum power that it's rated to handle without damage. It doesn't mean it requires that much power. Most car component speakers will sound fine with 60 watts RMS. The speaker won't be endangered by using less than the rated power.

Many manufacturers rate the speakers with a power range; ie, "20-100 watts RMS".

Answer 2

Actually, if you were to bridge 4 channels into 2, the output of the amp would be about 120watts (60+2) x 2, so they would be overpowered by 10 watts, which is completely fine.

Good Luck!