Thanks, everyone, for the very helpful feedback. I certainly can understand that the sound of the AB may be negligible due to earphones (not to mention OSHA rules). However, I’m also interested in the vibration felt by the pilot since I have two of these guys attached to my seat. I can feel the rumble of the runway and the engine. I should think the AB vibration would be more intense than that of the regular engine. That’s what I’m interested in.
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