JBL Control 30

JBL este in continuare un lider incontestabil cand vine vorba de auditii pretentioase si calitate nemaivazuta. Boxele pasive pe 3 cai, JBL Control 30, sunt ideale pentru aplicatii in spatii inchise sau deschise, ele fiind echipate cu un difuzar de 10 toli, altul de 5 toli si un driver de 1 tol, care in total livreaza o putere de 500 W/ 4 Ohmi. Printre specificatii se numara goarna optimizata, cabinet realizat prin tehnici speciale pentru performante audio hi-fi, latime de banda extinsa si acoperire controlata. Boxele sunt prevazute cu transformator pentru sisteme de 70 V sau 100 V si protectie SonicGuard pentru suprasarcina. Specificatii tehnice (English): Frequency Range: 38 Hz – 17 kHz (-10 dB) Power Capacity: 500 W Continuous Program Power: 250 W Continuous Transformer Taps: 70 V: 150 W, 75 W, 38 W, 19 W 100 V: 150 W, 75 W, 38 W Thru Position: 4 nominal Frequency Response: 40 Hz – 16 kHz ( ± 3 dB) Maximum SPL @ 1m: Short-Term: 123 dB; Long-Term: 117 dB Nominal Sensitivity: 93 dB, 1W @ 1m (3.3 ft) Nominal Coverage Angle: 120° H x 110° V Directivity Factor (Q): 5.2 dB, averaged 500 Hz to 10 kHz Directivity Index (DI): 7.1 dB, averaged 500 Hz to 10 kHz Nominal Impedance: 4 ohms Crossover Network: 3rd order Low Pass LF, 2nd order High Pass/3rd order Low Pass MF, 3rd order High Pass, HF, plus conjugate shaping circuitry. Low Frequency: 250 mm (10 in) fiberglass/Kevlar® cone with pure butyl rubber surround, 50 mm (2 in) voice coil on fiberglass former, neodymium magnet Mid Frequency: 125 mm (5 in) anodized aluminum cone with EPDM rubber (Terpolymer of Ethylene and Propylene) surround, 25 mm (1 in) voice coil on fiberglass former High Frequency: 25 mm (1 in) compression driver, pure titanium diaphragm with patented JBL diamond surround Enclosure Material: High Impact PolyStyrene (HIPS) with 10% glass fill plus patent pending internal 5 mm foamed polyurethane secondary mold Grille: Thermoset composite coated steel, WeatherMax multi-layer foam Overload Protection: SonicGuard full range power limiting to protect network and transducers. Environmental: IEC 529 IP-X5 rating. Exceeds Mil Spec 810 for humidity, salt spray, temperature & UV. Passes Mil-Std-202F for salt spray. Terminations: Screw-down terminal strip, zinc plated copper base, nickel plated metal screws/washers. Accepts up to 9 mm outside 4 mm inside open Safety Agency Rating: Transformer is listed per UL1876 Dimensions (H x W x D): 593 x 372 x 345 mm Net Weight (ea): 18.9 kg Shipping Weight (ea): 20.3 kg (45 lb) Included Accessories: 1 pc MTC-PC2 input panel cover, InvisiBall mounting base, 6 mm x 305 mm InvisiBall Hex wrench. Optional Accessories: MTC-30CM (-WH) to install speaker down from the ceiling. MTC-30UB (-WH) U-Bracket