Frequent double booms

[sheeny]

Here’s that post with some of the ideas I had for why it might be happening:

Gauge to Absolute pressure sensing

G’Day David, This is an interesting problem… given the pressure differential the Boom measures is set up internally to the Boom i.e. across the highpass filter in one of the two tubes connecting the signal port to the sensor. The external tube you have connected to the shake should mean that the pressure changes inside the room shouldn’t matter i.e. the boom should not see them. I’d appreciate someone else either confirming or disputing my thinking on this. This suggests to me that something e…