SPL (Sound Pressure Level) refers to the magnitude of the change in air pressure caused by sound waves, and is an important indicator for measuring sound intensity. SPL is usually expressed in decibels (dB), representing the loudness of the sound.

SPL is one of the important parameters to measure speaker performance, especially in professional stage environments. A higher SPL means that the speaker can provide sufficient sound pressure in a larger range to ensure that the audience can hear the sound clearly. This is especially critical for large venues and high noise environments.

SPL is usually measured using a sound level meter. When measuring, the sound level meter is placed at specified locations, usually multiple points in the audience area, to record the sound pressure level at different locations. The sound level meter converts the sound pressure changes into electrical signals and displays them as decibel values.

The SPL range of professional stage speakers is generally between 100 dB and 140 dB. Examples of common speaker types and their SPL ranges are as follows:

The maximum SPL refers to the maximum sound pressure level that a speaker can produce without distortion. After the speaker reaches the maximum SPL, further increasing the volume may cause sound distortion and deterioration of sound quality. The maximum SPL is an important indicator to measure the performance and application range of the speaker.

There are several factors to consider when choosing the right SPL speaker:

The power of a speaker is usually correlated with SPL, but it is not the only determining factor. The higher the power, the higher the SPL a speaker can produce. However, factors such as speaker design, drive unit efficiency, and cabinet structure also affect SPL. For example, an efficient drive unit and an optimized cabinet design can produce a higher SPL at a lower power.