I can run my rig on one Honda 2000. But ac makes it really rev up. If I had 2 honda 2000's hooked together, in theroy they would not have to rev as high to run ac. But would 2 be 2x louder than one?...
I read somewhere on this forum, that when you parallel 2 generators under low load, the system puts most of the load on 1 of them when the other was only stand by for peak of the power. Meaning if the 1st one will run at the same speed what single one, you will not have noise reduction. Most of androids can have dB meter apps. Not sure how accurate it is.