Inside the Design
Deliver clear, powerful announcements and music throughout your athletic facility with this stadium sound system featuring three Community R.25-94TZ 8" weather-resistant loudspeakers, a Pure Resonance Audio RMA500BT 500W Bluetooth mixer amplifier, and a PTT1 desktop push-to-talk microphone. Designed for football fields, baseball and softball stadiums, soccer fields, racetracks, school athletic facilities, and other outdoor venues, this system provides a practical solution for play-by-play commentary, game-day announcements, paging, and music playback across designated listening areas.
The three Community R.25-94TZ horn-loaded loudspeakers combine high-efficiency sound projection with focused 90° horizontal by 40° vertical coverage to help deliver clear, intelligible speech and full-range audio to players, spectators, and staff. Their weather-resistant construction is designed to withstand demanding outdoor conditions, while the included mounting brackets allow installers to position each speaker toward the intended listening area. The RMA500BT amplifier provides 500 watts of Class D power with built-in Bluetooth streaming and multiple audio inputs, allowing operators to play music between games, make live announcements, and manage audio from a central location. The PTT1 desktop microphone provides convenient push-to-talk operation from a press box, announcer's booth, or control room.
This system operates on a 70V speaker line with selectable transformer taps for adjusting output levels based on the venue's needs. For the 500W RMA500BT amplifier, we recommend starting with all three Community loudspeakers set to 100W at 70V, creating a combined 300W speaker load with 200W of rated amplifier capacity remaining. For smaller or quieter listening areas, all three speakers can be set to 50W for a combined 150W load. These configurations provide flexibility for different stadium layouts, mounting positions, and sound level requirements. The amplifier and microphone should be installed in a dry, protected location with adequate ventilation.
Key System Features
- Complete 70V stadium sound system designed for play-by-play commentary, public address announcements, paging, and music playback at outdoor athletic facilities
- Three Community R.25-94TZ 8" 2-way horn-loaded loudspeakers provide clear speech intelligibility and full-range sound reproduction for stadium and athletic field applications
- Weather-resistant loudspeakers feature durable UV-resistant enclosures, protective grilles, and included mounting brackets for reliable outdoor installation
- Focused 90° horizontal by 40° vertical speaker coverage allows installers to direct sound toward designated spectator seating, athletic fields, and other listening areas
- Selectable 70V transformer taps allow flexible output levels, with all three speakers recommended at 100W each for a combined 300W load on the 500W amplifier
- Pure Resonance Audio RMA500BT 500W Class D mixer amplifier features Bluetooth streaming, USB and TF card playback, an FM tuner, and multiple audio inputs
- Individual input level controls, bass and treble adjustments, and master volume control provide convenient management of music and live announcements
- Pure Resonance Audio PTT1 desktop gooseneck microphone provides momentary push-to-talk and locking switch operation for convenient announcements from a central location
- Community loudspeakers include adjustable mounting yokes for secure installation and positioning in outdoor stadium and athletic field environments
About the System Components
Community R.25-94TZ 8" 70V Weather-Resistant Horn-Loaded Loudspeakers
The three Community R.25-94TZ 8" 2-way full-range loudspeakers are engineered to deliver high-quality speech and music reproduction in demanding indoor and outdoor environments. Each speaker features a high-efficiency horn-loaded design with an 8" low-frequency driver and a 3/4" high-frequency compression driver, providing excellent vocal clarity, smooth frequency response, and low-distortion sound projection. With a focused 90° horizontal by 40° vertical coverage pattern, these loudspeakers are well suited for stadium fill applications, athletic fields, racetracks, outdoor gathering areas, and other venues requiring clear audio across designated listening areas. Built for demanding outdoor applications, the R.25-94TZ features a durable UV-resistant rotomolded enclosure, weather-treated drivers and crossovers, a corrosion-resistant protective grille, and an included mounting yoke. Its weather-resistant construction and integrated mounting provisions provide installation flexibility for athletic facilities and other commercial environments. Each speaker should be securely mounted and aimed according to Community's installation guidelines, including a minimum 5° downward angle for the specified outdoor weather-resistance rating.
Each R.25-94TZ includes a built-in 70V/100V autoformer with selectable transformer taps for adjusting speaker output. For this 500W amplifier system, a recommended starting configuration is 100W at 70V per speaker, creating a combined 300W load across all three loudspeakers. For applications requiring lower sound levels, the speakers can be set to 50W each for a combined 150W load. These options allow installers to balance audio output with the venue's coverage requirements while remaining within the amplifier's rated power capacity.
Important Installation Note: Community specifies a 100 Hz high-pass filter with a 24 dB/octave slope for the R.25-94TZ loudspeakers. Proper high-pass filtering must be provided for all audio sources to protect the speakers and maintain reliable operation.
Pure Resonance Audio RMA500BT 500W Bluetooth Rack-Mount Mixer Amplifier
The Pure Resonance Audio RMA500BT 5-channel commercial mixer amplifier delivers 500 watts of efficient Class D power for stadium announcements, public address applications, and distributed audio systems. Featuring a 70V speaker output and 4-16Ω low-impedance connectivity, this versatile amplifier provides reliable power for a variety of commercial loudspeaker installations. Its compact 1U rack-mount design makes it an excellent choice for press boxes, equipment rooms, announcer booths, and other locations where powerful audio amplification and centralized control are essential. Built-in Bluetooth streaming allows operators to play music wirelessly from compatible smartphones, tablets, and other devices, while USB and TF card playback, an FM tuner, and multiple microphone and auxiliary inputs provide additional audio source options. Individual input level controls, bass and treble adjustments, and master volume control make it easy to manage music and announcements during games, sporting events, and facility activities. The included IR remote provides convenient operation of the built-in media player, while variable-speed forced-air cooling helps maintain dependable performance during extended use.
The RMA500BT also features a dedicated Emergency (EMC) input that provides priority over other audio sources when connected to a compatible external paging or emergency audio source. This feature allows priority audio to be reproduced throughout the connected loudspeaker system when properly configured. The amplifier should be installed in a dry, protected indoor location with adequate ventilation.
Due to the possibility of FM radio interference and the variables involved, FM radio is not recommended as the primary audio source.
Pure Resonance Audio PTT1 Desktop Push-to-Talk Gooseneck Microphone
The Pure Resonance Audio PTT1 desktop push-to-talk microphone provides a convenient and reliable solution for play-by-play commentary, paging, and live announcements at stadiums and athletic facilities. Ideal for press boxes, announcer booths, scoring stations, and other centralized control locations, the PTT1 allows announcers, coaches, and facility staff to communicate clearly without the need for a handheld microphone. Its unidirectional dynamic microphone helps capture intelligible speech while minimizing unwanted background noise during announcements. The PTT1 features a flexible gooseneck for comfortable microphone positioning and a rugged die-cast zinc alloy tabletop stand that provides stability during regular use. Momentary push-to-talk and locking switch operation allow users to make quick announcements or maintain continuous microphone operation when needed. The included 5-foot XLR cable provides convenient connectivity, making the PTT1 a practical solution for everyday stadium paging and game-day communication.
