The sound of a large (maybe defect) machine powering up and powering down. Could also be a spaceship on its last legs.
The pack contains 5 variations of the main sound and each layer as a separate file, to combine freely.
The 15 sounds have the following lengths:
Full Sound – Variation 1 – 5: 0:09 each Base Sound – Variation 1-5: 0:08 each Layer Sound – Variation 1-5: 0:08 each