Welcome Shot-On-Goal to SatelliteGuys!
As far as your question goes it's really hard to answer as the 921 was setup in the middle of a convention center, not a small room like you would use it in at home. Plus there were over a 1,000 people walking around so it was not a quiet atmosphere.
I would venture to say that the shound should be no more noiser then a 721 or 521.
Again welcome to the site, enjoy yourself!
As far as your question goes it's really hard to answer as the 921 was setup in the middle of a convention center, not a small room like you would use it in at home. Plus there were over a 1,000 people walking around so it was not a quiet atmosphere.
I would venture to say that the shound should be no more noiser then a 721 or 521.
Again welcome to the site, enjoy yourself!