Wells, Joe and others in “Unfinished Business”

Wells

All right, we're synced up with whatever the heck that thing is.

Joe

Finally, something we're both baffled by.

Wells

I am kidding. That, my friend, is a 75 KTSB 40,000-watt reverberating sound amplifier, designed to single out the operating frequency of every single Earth-2 being on this planet, which when contained and magnified by the Flash creating a sound pressure wall around the city, will render all of us Earth-2 beings unconscious. Hence, the safety precautions.

Henry

[shrugging] I'm baffled by it.