TMP Pro Distribution 9914 扬声器

The Control® 28 is the largest of JBL Professional's Control Contractor Series indoor\/outdoor loudspeakers. The Control 28 offers high power in a compact full-range speaker. It is designed to bring vivid sound reproduction to large indoor or outdoor spaces. Like all Control Series surface-mount models, the 28 includes mounting brackets. Frequency Range : 55Hz to 15kHz (-10 dB) Power Capacity : 175 W Continuous Program Power 87 W Continuous Pink Noise Transformer Taps : 100 V Line: Tap 1 = 15 W, Tap 2 = 30 W Tap 3 = 60 W, Tap 4 is not used 70 V Line: Tap 1 = 7.5 W, Tap 2 =15 W Tap 3 = 30 W, Tap 4 = 60 W Nominal Max Output by Tap:(dB-SPL @ 1m) : Tap Number \/ 70.7 V Input \/ 100 V Input Nominal Max Output by Tap:(dB-SPL @ 1m) : Tap #2: 102 dB 105 dB Tap #3: 105 dB 107 dB Tap #4: 107 dB (do not use) Nominal Coverage Angle : 90° x 90° Directivity Factor (Q) : 7.5 dB Directivity Index (DI) : 8.8 dB Crossover Frequency : 2.8kHz LF Driver : 200mm (8 in) Polypropylene cone w\/ WeatherEdge HF Driver : 25mm (1 in) Titanium coated polycarbonate Transformer Taps : 70 V: 110 W, 55 W, 28 W & 14 W 100 V: 110 W, 55 W, & 28 W Thru Position: 8 W nominal Low Frequency : 200 (8 in) kevlar cone with pure butyl rubber surround, 50 mm (2 in) voicecoil on fiberglass former High Frequency : 25 mm (1 in) compression driver, pure titanium diaphragm with patented JBL diamond surround Enclosure Material : HIPS (High Impact Polystyrene) Overload Protection : Full-Range power limiting to protect network and transducers Terminations : Spring terminals, accepts banana plug Safety Agency Rating : Transformer UL1876 recongized Environmental : Conforms to Mil Spec 810 for humidity, salt spray,temperature & UV. IEC 529 IP-X4 splashproof rating. Dimensions (H x W x D) : 380 x 280 x 220 mm (15.0 x 11.0 x 8.6 in.) Net Weight (ea) : 6.5kg (14.3 lb) Shipping Weight (ea) : 15kg (33 lb) Included Accessories : Invisiball Assembly 6mm x 180mm hex key Optional Accessories : MTC-28V: For vertical columnar orientation of up to 3 loudspeakers MTC-28H: For horizontal splaying of two speakers. Three brackets array up to six loudspeakers in a 360° array. MTC-28\/25CM: Ceiling-mount adapter.