4 B-Format Room Impulse Responses recorded in the Jack Lyons Concert Hall at the University of York. The concert hall is hexagonally shaped with a seating capacity of up to 350 people. It regularly used for musical performance hosting a variety of performances from students and professionals alike. Each impulse has been measured at a different position in the room (conductor & the middle of each seating block). Each impulse consists of 4 speaker directions (front,back,left,right) that have been combined and normalised to simulate an omnidirectional source from the source position.