In addition to providing adjustment zones for masking output, most sound masking systems also provide adjustment zones for paging, timer functions and local volume switches. Systems vary widely in the degree to which they can be zoned and the method of creating those zones.

Ask how many zones the sound masking system offers. If it only provides a single zone, it will typically be necessary to install several such systems in order to provide any kind of zone control within the space. Systems that provide a large number of small zones offer the greatest adjustment flexibility.

Also ask whether the zones will be hardwired or digital. Hardwired zones require advance planning, more cabling and a contractor to re-wire the system should any changes need to be made in the future. Digital zones can be assigned and re-assigned at any time from a control panel or computer.