Sennheiser PA System Setup

I'm looking for an expert to install a Sennheiser public address system for indoor use.

Key Requirements:
find the issue with current system (keeps making odd noises)
- Recommend cure/fix/replace as required
- Setup for indoor public address use

Ideal Skills & Experience:
- Experience with Sennheiser audio equipment
- Background in audio installation
- Knowledge of indoor PA system requirements