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All posts tagged Loudspeakers

Springdale, Arkansas-based Commercial Audio Systems (CAS) recently installed One Systems Direct Weather loudspeakers in the south end zone at Donald Reynold Razorback Stadium at the University of Arkansas.

Jim Crews, Principal at CAS, explained:

We were replacing older, worn out loudspeakers and needed a product that was intelligible with sonic clarity and capable of handling the weather. It was a pretty tight time frame, so we worked with Mike O’Neill, chief engineer at One Systems, and designed a system that suited the stadium’s needs perfectly.

The distributed system is made up of thirty-four 208/HTC loudspeakers that cover the ‘dark areas’ under the overhangs at the south end of the stadium. The two-way loudspeaker design features a two element vertical array made up of two eight-inch low frequency devices. The top eight-inch unit is a coaxial design that utilizes a medium format titanium compression driver to provide the necessary high frequencies.

The injection moulded enclosure is made of high-impact copolymer materials that exhibit superior weather resistance. In addition, the 208/HTC uses 316-grade stainless steel (marine-grade) for all structural rigging points and all rigging accessories are also made using 316-grade stainless. The metal grille components feature a newly developed marine-grade powder coat over 304-grade stainless steel, which makes the cabinet impervious to rain and moisture. The design also features a three-layer rain shield grille and input weather cover with an IP68 rated waterproof gland night for added protection from the elements.

Crews added:

One of the nice things about the new HTC models – in addition to their direct weather capabilities – is that you no longer have to order 70v or low impedance. The units can be configured for whatever mode we need on site. It’s one size fits all, so ordering is much easier.

I also have to hand it to the team at One Systems. This was a last minute project with a week and a half window for ordering and installation – and they got it done. Our client is very pleased with the product and the end result.


Image: One Systems’ new HTC loudspeakers reinforce Donald Reynold Razorback Stadium’s south end zone with sonic fidelity and intelligibility.


About One Systems, Inc.

Headquartered in Nashville, TN, USA, One Systems, Inc. is a high-quality manufacturer of two brands of loudspeakers. Established in 2006, the One Systems brand of Direct Weather loudspeakers utilises its patented Equivalent Throat Technology® and Inside/Only Voice Coil Technology® designs. The On Point Audio brand of non-weatherproof speakers utilises its Narrow-Profile™ woofers, enabling smaller sized enclosures to be complemented with large format drivers. For further information, go to:

Community Pro provides audio for three 2014 FIFA World Cup stadia

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With the 2014 FIFA World Cup in Brazil now underway, technology is to play a major role in ensuring the enjoyment and safety of visitors.


Estádio Mineirão (pictured above) was the first of three World Cup stadia to be completed using Community loudspeaker systems. Soundvision Engineering, the largest professional audio and video contract integrator in Brazil, was commissioned to design and install the audio systems by Emílio Miranda of Johnson Controls Brazil, the contract holder for Estádio Mineirão.


Soundvision’s CEO, Antonio Tadeu Torquato, and New Business Manager, Leandro Freire, carried out an extensive evaluation of loudspeaker systems that would provide the best solution for the arena. They concluded that the first choice was Community, proven for all-weather reliability, well-defined coverage and high intelligibility.


After installation, performance analysis measurements made in the arena by Fernando Gargantini, Soundvision’s Systems Manager, and Dave Howden, Community’s Technical Director, showed that the system performance met specification and provided good coverage.


The main system configuration consists of twenty-four clusters, each with four or five R2 loudspeakers. In total the system uses twenty-four Community R2-52’s, twenty-four R2-694’s, six R2-94’s, four R2-77’s and forty-eight R2-474 loudspeakers. These are fed from processors and amplifiers located in five technical rooms, communicating through CobraNet with D-link redundancy and BSS-BLU processors. The system is connected to the arena’s fire alarm system, enabling the distribution of live and pre-recorded messages for mass notification or emergency evacuation.


Soundvision was also appointed for two further World Cup stadia, Arena de Sao Paulo and Arena Amazonia, which were also fitted with Community R-Series loudspeaker systems.


Arena de Sao Paulo is located in Carmosina, Sao Paulo, and has been built specifically for the 2014 FIFA World Cup with a seating capacity of 65,000 for the event. For Arena de Sao Paulo, Soundvision designed and installed a system using sixteen Community R2-94’s, sixteen R2-694’s and sixteen R2-77 loudspeakers.


Arena Amazonia, is located in the city of Manaus in the heart of the Amazon rainforest. The sustainable stadium project will deliver an important legacy for the region and provides seating for 42,377 spectators. This system in Arena Amazonia was completed by Soundvision using sixty-four Community R2-474’s and seventy-six R.25-94T loudspeakers.

Danley Loudspeakers infiltrate Sports Market

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With a design team led by celebrated acoustician Tom Danley, Danley Sound Labs has developed an extensive catalogue of loudspeakers and subwoofers that cleverly sidestep the constraints and trade-offs of conventional designs. Its original patented Synergy Horn and Tapped Horn technologies led to a range of products that deliver point-source sound with stunning fidelity at any volume, near-perfect phase coherence, seamless arrayability, and “cliff edge” pattern control.In its latest generation of products, including the Jericho Horn and the Genesis Horn, those technologies have been combined with Tom Danley’s newest patent-pending technologies, Shaded Amplitude Lens Technology and Paraline, to deliver those same advantages in the high SPL environments typical of sports stadiums.


While still point sources – and retaining all of the advantages of point sources – the new designs allow controlled SPL by distance to provide even coverage to raked seating, pulling the rug out from under the line array’s claim to fame. Recognizing these advantages, and because Danley solutions are still more affordable than most conventional designs, sports venues are increasingly turning to Danley Sound Labs. A Danley system gives their fans an awesome game day experience and even more reason to get off the couch for the next home game.


Perhaps the most visible arenas to turn to Danley are the 80,750-seat Lambeau Field – home to the Green Bay Packers – and the 74,000-seat Ralph Wilson Stadium – home to the Buffalo Bills. Fans of both NFL teams now enjoy impactful music and crystal clear announcements with distributed Danley Genesis Horns, supplemented by a range of Synergy Horn loudspeakers and Tapped Horn subwoofers. South of the border, Juárez Vive in Ciudad Juárez, Mexico, seats 12,000 baseball fans and employs a distributed ring of Danley SM80 loudspeakers and TH118 subwoofers.


Danley’s rising visibility is well represented by college football stadiums across the US. The immensely powerful Jericho Horn has been used in several end-fired systems, including Montana State University and Troy University, which cover 30,000 and 17,000 seats with just a single Jericho Horn. Two Jericho Horns suffice for Grand Valley State University (8,500 seats), Florida Atlantic University (30,000 seats), and Northwestern University (47,000 seats). Brigham Young University and University of Arizona each use four Jericho Horns to cover 64,000 and 56,000 seats, and Michigan State University uses six Jericho Horns to cover 80,000 seats.


The thunderous roar from the crowds at 92,500-seat Tiger Stadium at Louisiana State University has earned it the title of loudest stadium in the world, and it now has a sound system to match: eighteen Jericho Horns paired with six Danley “Rock Monster” subwoofers provide abundant SPL with Danley’s characteristic fidelity. Amazingly, Tiger Stadium measures +/-5dB 28Hz-10kHz over the entire stadium with an enough power to do 105dBA at 800+ feet. Furthermore, the directivity of the TH812 subwoofer arrays are such that the seats under the scoreboard are only +6dB compared to 800 feet! The most recent additions to Danley’s roster include Boise State University (end-fired, four Jericho Horns plus two BC415 subwoofers, for 36,000 seats), Washington State University (end-fired, five Jericho Horns plus four Rock Monster subwoofers, for 33,500 seats), and Mercer University (end-fired, two Genesis Horns plus two DBH218 subwoofers, for 6,000 seats). The colossal stadiums at University of Illinois and University of Wisconsin both added beefy low end with four giant Rock Monster subwoofers.


Indoor stadiums at all levels are also benefitting from Danley designs. The NHL’s Nationwide Arena in Columbus, Ohio, is home to an all-Danley system consisting of SH96HO and TH118 products and has the reputation of the being the best sounding venue in the National Hockey League. Washington State University’s basketball stadium uses twelve Genesis Horns to cover 11,500 seats. Wichita State University’s 10,500-seat Koch Arena covers fans and the court with eight clusters that circle the top ring of a new center-hung video board, each comprised of an SH96, SH64, and an SM80. Four TH118 subwoofers provide low end. Other Danley installations include Olivet Nazarene University, which uses Genesis Horns, SH100s, and TH118 subwoofers, and Family Arena, which supported its full-range system in a 10,000-seat venue with a single BC412 subwoofer! Danley’s weatherproof OS80 loudspeakers have found ready venues both indoors (J.D. McArthur Arena for ice hockey) and outdoors (Texas A&M Corpus Christi and Florida State University).