Hi. I have a Yamaha As-701 amplifier and Cambridge audio bronze 2 speakers just single wired. When the volume dial is halfway it is insanely loud, my question is if I turn it up more could the speaker's blow? Thanks
Get, or borrow a calibrated sound meter. Then check the peak levels you're getting at 1 metre in front of the speakers against your speaker sensitivity, amplifier power rating and speaker power handling specifications.
It's possible your "very loud" is peaking at 89 dbs - in which case you could turn it up more without damaging anything. It's also possible that your very loud is 109 dbs - in which case you should back-off on the volume.