How Loud Should Music Be? SPL Levels in Concert Halls vs Home Audio Systems
POWER (original title)
by AM Likhnitsky
A. M. Likhnitsky analyzes the sound pressure levels required for realistic reproduction of symphonic music in domestic listening environments by comparing the acoustic characteristics of concert performances with typical home playback conditions.
Based on calculations for a concert hall of approximately 10,000 m³ with a reverberation time of about one second, he shows that the most probable sound pressure level during a symphonic performance is around 70 dBA, while the average level is about 77 dBA and peak levels rarely exceed 100 dBA.
Studies of listener preferences, including research conducted by the BBC, indicate that music is generally played at lower levels in the home than in the concert hall. Consequently, Likhnitsky concludes that a home audio system capable of reproducing undistorted peaks of roughly 100 dB SPL is sufficient for accurate reproduction of symphonic music.
He further demonstrates how achievable sound pressure levels depend on amplifier output power, loudspeaker sensitivity, and listening-room acoustics, emphasizing that amplifier clipping and the peak characteristics of musical signals must be taken into account when determining the practical power requirements of an audio system.
