JBL Control 28-1 8" 2-Way Indoor/Outdoor Speaker Pair 70V / 100V / 8 Ohm - BlackThe Control 28-1 by JBL is an excellent choice for a wide variety of applications, including retail stores, restaurants, health clubs, theme parks, educational facilities, hospitality, music cafes, leisure venues, and anywhere where a top quality compact indoor/outdoor foreground/background music (and/or paging) speaker is required.
JBL's Contractor Series surface-mount speakers are loaded with complication-reducing innovations. Rugged molded high-impact polystyrene (HIPS) enclosures balance mass, strength, and resonance, perfectly complementing their respective transducers. The symmetrical 100° x 100° dispersion geometry delivers precise directability and control. Compact design dimensions and textured, ready-to-paint exterior surfaces make the Control Contractor Series unobtrusive in any decor. JBL's Invisiball™ mounting system (patent pending), innovative bracketing solutions, and factory-installed autoformers take the headaches out of installation.
Extensive use of high-tech materials adds years to speaker life expectancy while increasing weather resistance. The Control 28-1 exceeds MilSpec 810 for humidity, salt-spray, temperature & UV, and passes MilStd-202F for salt spray and ASTM G85 for acid-air plus salt spray. For extreme environments, MTC-23WMG-1 WeatherMax™ grilles and MTC-PC2 protective panel covers (both sold separately) may be added to increase the IEC rating from IP-44 to IP-55.
Specifications: • Frequency range(-10 dB): 45 - 20,000 Hz • Frequency response (±3 dB): 62 - 16,000 Hz • Power rating (8 ohm setting): 240W continuous program • Maximum input voltage: 27.5 Vrms; 55 peak • Maximum SPL: 112 dB avg; 118 dB peak • Sensitivity: 91 dB 1W/1m (avg., 100 - 10kHz) • Coverage angle: 100° x 100° • Directivity factor (Q): 7.3 (avg. 1kHz - 16kHz) • Directivity index (DI): 8.3 dB (avg. 1kHz - 16kHz) • Tap settings: (70V) 60W, 30W, 15W, 7.5W; (100V) 3 60W, 30W, 15W • THRU setting: 8 ohms nominal • Recommended high-pass protection: 45 Hz, 24 dB/oct • Termination: screw-down terminal strip • Dimensions: 15.2" x 11.1" x 8.6" (277 x 282 x 219 mm) • Weight (per speaker): 6.8 lbs. (15.0 kg) • Sold in pairs.
Constant Voltage (70-Volt) Audio Systems
Audio distribution systems, especially those commonly used in department stores, warehouses, restaurants, etc., require that many loudspeakers be driven from a single audio amplifier over long runs of speaker wire. The "constant voltage" or "high impedance distribution" audio systems can be complex to understand at first, however, provides many advantages. Learn how to design your own 70-volt or 25-volt loudspeaker system.
