Articles: (in pdf) -

Giant Voice sirens warn all

Giant Voice sirens warn all

Warranty

hss Engineering’s warranty on Giant Voice and/or Whelen High-Power Voice and Siren Systems

GiantVoice On-site Repair and Maintenance

GiantVoice On-site Repair and Maintenance

The Basic Physics of Siren Acoustics

Learn the Basic Physics of Siren Acoustics

Sircover

Calculate siren coverage with the Sircover computer program

Warning Tones

Low Frequency Warning Tones are the Most Effective