The Vulcan, designed by Scott lindgren and named for a British Avro Vulcan delta-wing V-Bomber of the 1950s and '60s, is a large but elegant rear-firing back-horn engineered for the Fostex FE206En. Due to the size of this speaker it will need to be shipped via truck and not by UPS, FedEx, etc. Due to this shipping cannot be calculated at checkout. Price shown in for 18mm SpartanPly, 18mm Baltic Birch may be available for an additional fee.