it will just be vocal.
What will be the best cheap solution to get it working at full power?
Will do! Thanks for the advice, i just remember reading somewhere (probably gearslutz) that running things at a lower wattage can damage the system and thought it would be best to double check!
out of curiosity, what sized power amp would be designed for these to run efficiently?
As for underpowering speakers being bad for them, it's complete ********. What Can hurt them is if you drive your amp into clipping steadily.
Your first sentence is the reason your second sentences happens. So I wouldn't call it ********.