This design has been deprecated. See the much-improved Design 3.
I designed a sound system to meet the following requirements:
Designed especially for speech, with tailored signal compression.
With complete user manual provided for users who are not audio professionals (see manual PDF below).
Engineered to minimize single points of failure with a fully isolated emergency signal path and a uninterruptible (battery backup) power supply.
Performs automatic room equalization using pink noise and a target curve.
See the user manual (PDF) for more information.