Applies to loudspeakers intended for household systems and environments. Although specifically designed for loudspeakers that are separate sound system components, the procedures, with minor changes, are applicable also to other devices such as radio receivers and television sets. Gives recommendations for the setting up, performance and evaluation of listening tests on loudspeakers. Recommendations about the room size, acoustical treatment and measurements, arrangement of loudspeakers and listeners, and environmental conditions are given. Experimental procedures are described, including recommendations on the choice of music and speech programme material and the processing and presentation of the final data. Has the status of a technical report.