A SAFE way to check line voltage is to get a Kill-A-Watt meter....They are about 25$ or so these days. Plug in the meter and plug the amp into the meter. You'll get a direct voltage reading. You can also measure current to the amp as well as watts / VA / Power factor.
As a first pass at the incoming power, I'd look for voltage sag as current draw increases. That to me would indicate a 'soft' line.
Maggies are NOT a bad load. They have generally moderate phase angles. They are of low sensitivity which is made up for, in no small part, by the dipole / linesource behavior which is maybe good for a +3db. The do have, however, pretty high power handling capacity so while say.....100 a side works the overachiever / person who likes it LOUD in a larger space can make use of some of the big 'd' stuff or the higher powered tubes. The AR mentioned above, is a natural. Magnepan shows well with Bryston, too. I'd LOVE to try some Pass, too, the INT-150, but that's dreamland, for me.
Your Cary should be MORE than enough, if fed proper line voltage, though at less than 1lb / watt for a conventional amp, a little 'light' perhaps?
As a first pass at the incoming power, I'd look for voltage sag as current draw increases. That to me would indicate a 'soft' line.
Maggies are NOT a bad load. They have generally moderate phase angles. They are of low sensitivity which is made up for, in no small part, by the dipole / linesource behavior which is maybe good for a +3db. The do have, however, pretty high power handling capacity so while say.....100 a side works the overachiever / person who likes it LOUD in a larger space can make use of some of the big 'd' stuff or the higher powered tubes. The AR mentioned above, is a natural. Magnepan shows well with Bryston, too. I'd LOVE to try some Pass, too, the INT-150, but that's dreamland, for me.
Your Cary should be MORE than enough, if fed proper line voltage, though at less than 1lb / watt for a conventional amp, a little 'light' perhaps?