The south wall has only one opening of 1 x 1 m for free field measure infinite baffle measurements. This is today more an interesting curiosity since it’s no longer being used. In the basement, we have a well isolated room for long term power handling tests of loudspeakers. We also have an enormous storage room in the basement for physical storage of different projects and samples going back, more than 30 years
All walls inside the anechoic chamber are covered with mineral wool wedges placed 5cm from the walls. These wedges together with the 5cm air layer represent an absorber/resonator which gives an absorption coefficient of more than 0.99 for frequencies above 70 Hz. The floor in the anechoic room is a net made from tensioned steel wires.
The entrance into the room consists of two coupled steel doors which opens outwards, together with a 1m thick frame construction with wedges which open inwards. Loudspeakers, microphones etc. can be connected to the measuring equipment outside the room with a sophisticated cable system. The cables are led into the room through noise traps.
A system of hooks from the roof and the floor gives us the possibility to mount different installations in different ways. The available room within the wedges above the wire floor is (Lx W x H): 750 cm x 440 cm x 480 cm. The room can be used for all kinds of free field measurements.
Our measurement systemsKlippel
We’re using the Klippel measurement system to develop and document.