For small conference rooms, the typical sound pressure requirement is between 85 and 95dB. Calculated at a rated power of 40W, the sound pressure level of a 5.5 inch 100V hifi conference wall speaker at a distance of 1 meter can reach more than 90dB. Combined with the acoustic characteristics of the room, it can easily cover a small space and meet the voice clarity requirements of the meeting.
In medium-sized conference rooms, the typical sound pressure requirement is increased to 90-100dB. At this time, a single speaker may not be able to fully meet the demand, but through reasonable layout, such as the use of dual speaker networking, an average sound pressure level of more than 95dB can be achieved, which basically meets the requirements of language clarity.
For large conference rooms, the sound pressure requirement is more stringent, between 95-110dB. In this case, a single speaker is obviously difficult to cover the entire space. It is necessary to use a multi-speaker array (such as 4-8) or a low-frequency unit to improve the low-frequency response to meet the sound pressure level requirement of more than 100dB.
When evaluating the adaptability of speakers, there are several key factors that cannot be ignored. The first is the sensitivity parameter. If the speaker sensitivity is ≥86dB/W/m, then at 40W power, a sound pressure level of more than 92dB can be achieved, which is enough for a small conference room. The second is the frequency response range. The product needs to cover the frequency band of 50Hz-20kHz to ensure the clarity of human voice and background music. Finally, installation and layout are also crucial. The wall-mounting height, angle and speaker spacing need to be optimized according to the acoustic characteristics of the room to avoid uneven sound pressure.
Based on the above analysis, we can give some recommended configuration solutions. For small conference rooms, a single speaker can meet the needs, and it is recommended to be installed 1-2 meters away from the audience. For medium-sized conference rooms, an array of 2-4 speakers can be used, and the frequency division control can be performed through a mixer or power amplifier. For large conference rooms, it is necessary to combine low-frequency speakers to form a full-range system and optimize the sound field distribution through a digital audio processor.