You will also learn how to do backups, system restore, and how to safeguard your wireless network. Troubleshooting as well as National Electrical Code will be covered. Instructional Rating Manual Skydiving Houston here. Prerequisite for native English speakers is showing proficiency at the Intermediate Spanish II level as determined. Nov 22, 2015. Congratulations on purchasing Mass Fidelity's Core Wireless. Speaker System! This manual provides detailed instructions for setting up and using your Core. • Core Wireless Speaker System. • Power Supply. • International Adapters. (North America, UK, Europe, Australia). • Soundbar Remote.