1320 rpm is a true sound body. It consists of six industrial fans that are simultaneously activated and perform about 1320 revolutions per minute. By rotating tangentially to metal plates, they generate a noisy air vortex.
Its presence is misleading. The elements follow the arrangement of cascade speakers used in concerts. Everything is regular, normal, up to that point. But if you wanted to take a closer look at this work, it would be like having your ears on the cog-wheel of a running circular saw. Even the bravest would be pushed back.