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Symetrix 9022 DSP Engines Go To College

Lecture Hall A/V Systems Benefit (September 26, 2001)
Among many other claims to fame, the recently dedicated Sundquist Science Complex at Austin Peay State University in Clarksville, Tennessee boasts cutting edge audio-visual presentation technology. Known locally as "the new science building", APSU's largest facility came with a $38 million price tag and considerable fanfare. A divisible 200-seat lecture hall, eight 50-seat lecture halls, twenty research labs, a greenhouse, and several museums comprise the complex, which opened at the beginning of the Fall 2001 semester. MCSi, the North America's largest integrator of audio-visual systems, handled the comprehensive, yet elegant installation.

MCSi equipped almost all of the lecture rooms and labs with a podium-centered audio-visual system. A model 915 Astatic microphone feeds one channel of a Symetrix 9022 DSP Engine, while a mono-sum from program sources feeds the second channel. Program sources include a computer audio output and a VCR output. Laptop connections permit monitor display, and an Ethernet connection ties the A/V podium to the school's computer network, allowing internet access and remote file retrieval. For the less technologically inclined, a document camera adjacent to the podium allows lecturers to project handwritten notes or diagrams.

The Symetrix 9022 DSP Engine stands in place of the analog graphic equalizers and dynamics processors of years past, providing flexible, tamperproof processing for all of the sound systems. "Most of the rooms were similar," recalled Greg Malenovsky, project manager for MCSi. "We had to contend with different acoustics between the hard reflective surfaces of the labs and the more forgiving walls of the lecture rooms. With the 9022, I was able to perfect one lab and one lecture hall, using the Symetrix software and a laptop to arrange and tweak high-pass filters, parametric equalizers, and dual-band limiters. Satisfied with that, I simply took the laptop from room to room and loaded the same program into those devices. That process was incredibly simple; it took less than thirty seconds from the time I walked in a room to the time I walked out. Unlike a lot of other boxes I've worked with, Symetrix smartly put the RS-232 connection on both the front and back faceplates for easy access."

The 24-bit 9022 feeds into a CMA60 biamped 70-volt amplifier, which powers eight JBL Control 26T speakers. In the labs, Malenovsky placed two speakers above each of four lab tables, while in the lecture halls he arranged them in four rows of two speakers each. All of the rooms have drop ceilings, making speaker installation a snap, and the dispersed nature of their arrangement allows lecturers to keep levels low. "Most of the professors aren't used to having an A/V system," noted Malenovsky. "We wanted it to sound as natural as possible. So far, the response has been excellent, with most of the professors exploiting all of the features we packed into the system."

ABOUT SYMETRIX For more information on professional audio signal processors from Symetrix and Lucid, please phone (425) 787-3222 or refer to the Websites, and

ABOUT MCSi MCSi, Inc. is the largest supplier and integrator of broadcast, computer, networking, and presentation technologies in North America. MCSi operates 118 locations throughout the United States and Canada, servicing 80,000 satisfied customers.

ABOUT EDI, Ltd. EDI, Ltd. Consulting Engineers (EDI) was established in 1986 and has become a leading technology and building systems consulting firm in the Southeast. The Atlanta-based company has grown into a 35-member team that specializes in providing services that improve the connectivity, security and productivity of the workplace. EDI strives to establish long-term customer relationships through trustworthiness, mutual respect and excellent, value-added service.

EDI is organized into three, multi-disciplinary customer delivery teams that provide customized solutions to clients, resulting in enhanced communications, lower operating costs, improved employee productivity and savings in material and equipment selection. Each team is comprised of specialists in areas including LAN/WAN, networking, security, audio-visual, due diligence, forensic engineering and air quality.

The firm's clients include Fortune 500 and other high-level companies such as IBM, Equifax, UPS and Hewlett Packard; governmental agencies like Housing and Urban Development (HUD); and educational institutions, including Georgia Institute of Technology, Georgia State University, University of Maryland and University of Richmond.

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Related Keywords:Austin Peay State University, Sundquist Science Complex, audio-visual presentation technology, APSU, MCSi, Symetrix 9022 DSP Engines


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