Full-Range Drivers

Our 4-inch (10 cm) loudspeakers are compact, yet are still large enough to produce the low frequencies needed for comfort and to mask a wider range of noises.

Sound masking sounds better with LogiSon®

Many organizations use a sound masking system to maintain an appropriate level of background sound in their facilities. To be effective, this level should be between 40 and 48 dBA in commercial interiors.

For best results, the masking sound produced by the loudspeakers should cover the entire masking spectrum, which is typically 100 Hz to 5,000 Hz, or as high as 10,000 Hz. It’s important to realize that if your loudspeakers can’t produce sound in the full range, the masking sound won’t seem natural or comfortable.

Very small loudspeaker drivers—less than 3 inches (76 mm) in diameter—cannot generate sufficient levels below several hundred hertz. In other words, they have no hope of generating sound down to the required 100 Hz. These low frequencies might seem extraneous, since they play a relatively small role in reducing speech intelligibility. They are, however, vital for occupant comfort. Without them, the masking sound will never fade into the background.

That’s why LogiSon loudspeakers are 4 inches (100 mm) in diameter—small enough to be attractive in open ceiling applications, but large enough to produce the full range of masking sound.