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St. Michael’s in Roseville, Minnesota had been experiencing poor speech intelligibility in their Sanctuary sound system that severely impacted the worship experience and ministry of the Word. The leadership called on KSG Sound & Video to engineer a solution to alleviate the issues. KSG began with on-site acoustical testing and assessment to identify the problems.  It was discovered that the issues were due to the poor design characterisitcs of their non-engineered sound system.  The existing system utilized a dual-mono (pseudo-stereo) sound system configuration and low-directivity loudspeakers that were mismatched to the highly reverberant acoustics of their Sanctuary.   Pseudo-Stereo vs True-Stereo The existing dual-mono system utilized two loudspeakers, left and right, so it appeared to be a stereo system.  However, this pseudo-stereo system sent two identical competing signals to the same seating areas, which degraded speech intelligibility and music clarity.  This pseudo- stereo configuration is used by many well-meaning sound companies, not realizing that it degrades sound quality.  A properly engineered approach would utilize a true-stereo system, wherein the Pulpit loudspeaker reproduces sound from the Pulpit, while the Lectern loudspeaker reproduces sound from the Lectern. This approach emphasizes speech intelligibility, music clarity, and spatial realism through natural localization of sound.    Computer Modeling for Matched Sound and Acoustics In addition, the loudspeakers used in St. Michael’s existing sound system were low-directivity loudspeakers that were not properly matched to the highly reverberant acoustics of the space. In highly reverberant spaces, high-directivity loudspeakers must be used to control and direct the sound to the seating areas, minimizing sound directed to the walls and ceiling, in order to maximize speech intelligibility and music clarity.   KSG created an acoustic model of the Sanctuary, then utilized the computer model to simulate speech intelligibility levels of the proposed new loudspeakers. In this process, loudspeaker performance is simulated in the acoustic model, using exact mounting locations and aiming angles.  The result is a loudspeaker system that matches the acoustics of the space, ensuring good speech intelligibility and clarity of music.           
Contact Us KSG Sound & Video - Where every project is supervised on site by the Owner. • Acoustical Testing and Treatments • Sound, Video, and Stage Lighting Systems • Video Recording and Surveillance Systems • Video-Conferencing and Digital Signage Systems • Affordable System Sales and Service • Professional Design & Installation • Same-day Maintenance Response Time • Servicing & Troubleshooting Existing Systems • Personal Service - you talk to the Owner Precision Computer Modeling and Simulation of Acoustic Environments and Sound Systems, as well as system engineering and installation for acoustic treatments, sound, AV, and stage lighting systems, are some of the specialty services provided by KSG Sound & Video. Design and installation is provided for all types of facilities. Contact Us
Clarity in Worship: Sound Engineering Success at St. Michael’s in Roseville, MN KSG Sound Modeling Brings High Intelligibility with Low-Cost Columnar Line Arrays  
KSG has been successful with sound in highly reverberant spaces for over 40 years KSG’s engineered design used compact line-arrays to reduced cost, while improving clarity.
over-priced
True-stereo emphasizes clarity, spatial relations, and localization of sound
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