I recommend not moving your chair, as it's absorption/reflection will affect the readings. You want it where it will be when you are listening.
Put the meter on a tripod exactly where your ears will be, and pointed between the speakers or slightly above so you can read the scale.
Be aware that moving your body up to make readings will also affect the readings, so try to read them from a consistent position as far back as possible.
Put the meter on a tripod exactly where your ears will be, and pointed between the speakers or slightly above so you can read the scale.
Be aware that moving your body up to make readings will also affect the readings, so try to read them from a consistent position as far back as possible.