Who typically signs the commissioning report to document the acceptance of the completed AV system?

The correct answer is that the owner typically signs the commissioning report to document the acceptance of the completed AV system. This is because the owner is the party with the most vested interest in the system's performance and functionality. After the installation and testing phases are completed, the commissioning report serves as a formal documentation of the system's acceptance, ensuring that it meets the originally outlined requirements and specifications.

By signing the report, the owner is acknowledging that they have reviewed the system and are satisfied with its performance, thus officially accepting it. This process is crucial as it establishes a clear point of responsibility and ensures that the project can move forward to the next stages, such as warranty, support, and maintenance.

The other options, while they each play significant roles in the installation process, do not hold the authority or responsibility that the owner does regarding the formal acceptance of the system. The project manager coordinates the various elements of the project but does not have ownership claim. The lead technician is responsible for the installation and technical aspects but not for the final acceptance documentation. Similarly, the site supervisor oversees the day-to-day operations on-site but is not the decision-maker about acceptance from an ownership perspective.