With direct access from the development lab, a set of plane wave tubes are available for the measurement of compression drivers. Celestion's hemi-anechoic chamber provides a reflection-free environment for the precision measurement of key physical properties including frequency response and sound pressure level.

Alongside scientific testing facilities, Celestion has also created a quite exceptional environment for analytical listening in a Philip Newell-designed listening room. Freed from the constraints of working within an existing or converted building, Newell has been able to realise fully his design for a 'Non-Environment', a room within a room in which new loudspeaker designs can be auditioned in an acoustically neutral listening space.

Throughout the development process a new product is subject to a rigorous testing regime enabling Celestion to confidently claim that each product is consistently capable of delivering the same high quality now and for years to come.