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After more than 20 years' experience in the development and production of high-quality electronic apparatus - including quality assurance, field testing and reliability analysis of military grade measuring equipment - followed by design & development of intruder detection devices, fire alarm systems, access control equipment and large system integration ("turnkey" solutions for management of airconditioning, lighting, security, fire detection, etc.), Tim Hagen founded Hollagen Designs Close Corporation in 1994.
Early projects included "tapeless" message store/recall units for announcements, small audio mixers, portable public address mixer/amplifiers, and high-gain low noise preamplifiers. Some of these products are still manufactured from time to time.

Much of our current activity involves design, development & production of dedicated plug-in modules for large audio installations typically found in office buildings, railway station concourses or airports. These various modules range from multi-channel line/microphone preamplifiers with automatic priority over-ride switching, through masking-sound noise generator/controllers for open-plan office areas, and high power 100 volt audio line routing cards with cable failure detection, to microcontroller-based alarm & evacuation tone generators. The EARDUCATOR project represents a blend of our interests in audio engineering, reliable product design, and producing easy-to-use devices aimed to improve the quality of life.




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