Riedel Associates
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about us

Experience and expertise are the keystones of our success at Scott R. Riedel & Associates. Our team of degreed professionals have experience teaching at colleges and universities and regularly participate in speaking engagements, conferences and lectures. Our well-regarded national experts are considered the best in the fields of acoustics and sound, all specialties related to the organ, liturgical music, theater design and other areas.


Scott R. Riedel & Associates, Ltd. began as a sole proprietorship by Mr. Riedel in the late 1970’s. Early customers included Lutheran and Catholic churches in Wisconsin desiring organ selection and purchase consultation. Mr. Riedel also offered room acoustic consultation for worship spaces primarily in Wisconsin and northern Illinois.  The series of educational articles on worship acoustic topics that Mr. Riedel wrote for The Diapason magazine soon brought national recognition, bringing clients from east to west coasts. The company grew over time; sound system design and organ tuning were added to the services offered, and the staff was expanded to include additional acousticians, system designers, organ technicians, as well as office management and architectural associates. The organization was incorporated in the State of Wisconsin during the 1990’s. Today the original church organ and sacred worship space acoustical consultations are still offered, along with sound and video system design, a wide scope of organ maintenance, as well as residential, commercial, industrial, institutional and educational consultation on all matters related to sound quality, noise control, systems and sound testing.


Scott R. Riedel
President/Acoustician/Organ Consultant

Mr. Riedel is a graduate of the University of Wisconsin School of Architecture and the Wisconsin Conservatory of Music. He is Organist-Choirmaster at Christ Church, Episcopal, Whitefish Bay, Wisconsin, and is a guest lecturer at Columbia College in Chicago, Illinois.

He has served on many church music committees and boards, including the American Guild of Organists, The Royal School of Church Music, and The Association of Lutheran Musicians. He is a member of the British Institute of Organ Studies, and the Acoustical Society of America. Mr. Riedel’s publications include a column in the GIA Quarterly Magazine as Architectural and Acoustics reviewer, the booklet “Acoustics in the Worship Space” published by Concordia Publishing House, as a series of articles in “The Diapason” magazine. He has also edited a special issue of CrossAccent, a journal published by the Association or Lutheran Church Musicians, which focused on church architecture, acoustics, and music.

Mr. Riedel has presented lectures on worship space acoustics, organ design and purchase to the Association of Lutheran Church Musicians, National Association of Pastoral Musicians, American Guild of Organists (various chapters and regions), Wisconsin Evangelical Lutheran Synod, American Institute of Architects, and the Lectures in Church Music at Concordia University.

David L. Beyer
Vice President/Head Organ Technician

Mr. Beyer is the principal organ technician at Scott R. Riedel & Associates Ltd. He began his work as church musician at age 15.  He holds degrees in Music Education, cum laude, from Augustana College; and in Organ Performance from the New England Conservatory of Music in Boston; his teachers include Yuko Hayashi, Donald Teeters, Robert Schunemann, Merle Pflueger and Bessie Schober. Post-grad organ studies were made with Harald Vogel, Klaas Bolt, Umberto Pineschi, Russell Saunders, and Roberta Gary.

Mr. Beyer has assisted in restoring two historic European organs – an 18th century chamber organ in Pistoia, Italy; and the 1560 Epistle organ in the Cathedral of Salamanca, Spain. Both projects were under the direction of Japanese organ builder Hiroshi Tsuji. He also helped voice Tsuji’s large concert organ built for Salamanca Hall in Gifu City, Japan. He studied organ history and construction with Fritz Noak and was designer/voicer for the J.F. Nordlie Company, Organ Builders, in Sioux Falls, South Dakota, from 1985 to 1996.

He serves as Music Director at Pentecost Lutheran Church in Milwaukee, Wisconsin. Previously he was organist and lecturer at the Ecumenical Liturgy & Worship Seminar at Oxford, England.  Mr. Beyer has performed worldwide and he has taught organ in Pennsylvania, South Dakota, and Japan. His compositions include settings for Holy Communion, hymntunes, wedding songs, and organ chorale preludes; his review articles have appeared in publications nationwide. He is a past Dean of the American Guild of Organists, a member of the Organ Historical Society, and a member of the Association of Lutheran Church Musicians, and is currently registrar for the Milwaukee Chapter AGO.

Craig R. Schaefer 
Lead Acoustical Engineer/Head of Acoustical Testing Services

Craig's specialties include acoustical testing & analysis, acoustical modeling, acoustical and architectural design, noise control engineering, technical writing and a variety of CAD and 3D modeling software aided design. Craig holds a bachelors degree in Architecture from the University of Wisconsin-Milwaukee as well as a Masters degree in Architectural Acoustical from Rensselaer Polytechnic University (RPI) in Troy, New York. He holds memberships in the American Institute of Architects (AIA) and the Acoustical Society of America (ASA). While pursuing research at RPI he developed a custom scale model of a coupled-volume system along with a sophisticated high-resolution scanning system. Craig's pioneering contributions made it possible for the first time in architectural acoustics community to visualize sound propagations in enclosures in low-frequency ranges by way of animations based on the experimentally scanned data. His work has been presented at the 159th Meeting of the Acoustical Society of America, Baltimore, MD 2010 and the International Symposium on Room-Acoustics Melborne, Australia 2010.

Prior to joining the Riedel organization, Craig has worked for a full service Architecture, Engineering, and Interior Design firm, as well as the Design Department of a large supermarket chain in the North East. His musical experience includes membership in both church and professional choirs, the Milwaukee Symphony Chorus, and as a barbershop tenor in the Greendale, WI and Saratoga Springs, NY chapters of the Barbershop Harmony Society.

Craig's experience includes the following technical and theoretical systems:
Geometric Acoustics
Psycho Acoustics
Stagecraft and Theater Design
Investigations on Coupled Spaces
3D Modeling and CAD software
Custom design/build of Acoustical Scale Test Models

Dave Hosbach
Lead Audio/Video Design Consultant

Mr. Hosbach is a professional audio and systems industry veteran of 20-plus years. Dave graduated from Dr. Martin Luther College in New Ulm, MN in 1983, with a Bachelor of Science in Education degree, with emphasis in science. He began in 1985 as an installer with a large Minneapolis-based sound contracting firm, and worked into systems design, sales and acoustic analysis.

In 1995 Dave accepted an opportunity from Electro-Voice (a world-class manufacturer of professional audio equipment) for marketing management and product development. In addition, Dave was active as a seminar leader for E-V dealers as well as end-user groups, focusing on loudspeaker and microphone design and application.

Dave spent two years between 2001-2003 as Director of Event Operations at NSCA (National Systems Contractors Association, a leading not-for-profit trade association working in support of the electronic systems industry) where he coordinated the NSCA Expo and led seminars in support of NSCA members and member companies.

In 2003, Dave became Systems Engineer at Metro Sound and Video in Milwaukee, WI. Dave was responsible for audio and video systems design and engineering as well as project management, system programming, setup and user training. 

Dave is fluent in EASE (Electro-Acoustic Simulator for Engineers), an industry-standard computer modeling software package to aid in loudspeaker system design and performance prediction. Dave is also trained in TEF (Time Energy Frequency) analysis and has regularly employed this and other measurement systems such as “Ivie” and “SMAART Live” in his analysis, design and system setup work.

You may contact Mr. Hosbach through his website, http://dshaudiovisions.com/

Tim Foley
IT Specialist/Architectural Assistant

Mr. Foley is a graduate of the University of Wisconsin Milwaukee with a Bachelors of Science and Engineering, Computer Science as well as a Minor in Architectural Studies from the School of Architecture and Urban Planning. Prior to his time at UW-Milwaukee, he earned an Associate of Art and Science degree from Madison Area Technical College from their Architectural Technician program.

Mr. Foley is responsible for maintaining the computer systems and peripheral devices in the office. In addition to troubleshooting computer, printer, and network errors, Tim advises on the purchase of new hardware and software for use by Scott R. Riedel & Associates, Ltd. He also assists in CAD drawing production as well as information processing and storage for Scott R. Riedel & Associates, Ltd. Tim has experience with a variety of CAD software, including AutoCAD and Revit, EASE Modeling and 3D and artistic rendering drawings.

Christopher Penkala
Architectural Assistant

Mr. Penkala is a 2009 graduate from the University of Wisconsin Milwaukee. He received his BA in Architecture and a Certificate in Urban Planning. Since receiving his Bachelors Degree, Mr. Penkala has returned to the University of Wisconsin Milwaukee and is currently enrolled as a Graduate Student in the School of Architecture. In addition to the classes that he has taken at the University of Wisconsin Milwaukee, Mr. Penkala has also taken AutoCAD training classes at Lakeshore Technical College in Sheboygan, WI. Christopher assists in CAD drawing production, color renderings, and the management of drawing and information processing and storage at Scott R. Riedel & Associates, Ltd. Chris has experience using many different computer drafting and modeling programs including AutoCAD, Revit, 3D Studio Max, and Microstation.

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Address: 819 N Cass Street, Milwaukee, WI 53202-3908
Tel: 414.771.8966
Fax: 414.771.0138

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Acoustical Consultation
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On-Site Acoustical Measurement

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