ตู้ลำโพง ยี่ห้อ JBL รุ่น JRX215D

Features :    

• JBL 15 in low frequency driver with a 64 mm (2.5 in) diameter edgewound ribbon voice coil which provides more cross-sectional wire area in the voice coil gap than round wire designs, for greater efficiency and power handling.
• JBL 2414H-C 25 mm (1 in ) polymer diaphragm compression driver improves high frequency performance as well as system reliability.
• The advanced network topology crossover design shapes the frequency response to deliver coherent summation in the crossover region.
• High-voltage capacitors and inductors with massive cores and heavy gauge wire enable the crossover network to handle high power without saturating.
• Progressive Transition™ high frequency waveguide provides superior coverage control, reduced distortion, and smoother frequency response.
• The rugged, acoustically superior enclosure is constructed from 19 mm (.75 in ) MDF (Medium Density Fiberboard) using advanced adhesives and mechanical fastener technology for extreme durability and improved low-frequency performance.
• SonicGuard™ protects the high frequency driver from excess power without interrupting the performance.
• Non-resonant, all-steel handles are used.
• Attractive 18-gauge hexagon perforated, steel grille protects components from damage.
• Dual-angle pole-mount socket allows the speakers to tilt 10° for more uniform audience coverage.

Specifications :

• Power Rating    :    250 W / 1000W
• Frequency Range (-10 dB)    :    41 Hz – 18 kHz
• Frequency Response (±3 dB)    :    59 Hz – 13 kHz
• Sensitivity (1w/1m)    :    99 dB SPL
• Nominal Impedance    :    8 ohms
• Recommended Amplifier Power    :    250 W to 500 W into 8 ohms
• Maximum SPL    :    129 dB
• Nominal Dispersion    :    90º x 50º
• Crossover Frequency    :    2.2 kHz
• Dimensions   (H x W x D)    :    699 mm x 460 mm x 432 mm  (27.5 in x 18.1 in x 17 in)
• Weight    :    27.4 kg (60.5 lb)
• High Frequency Driver    :    JBL 2414H-C , 1″ exit compression driver mounted on Progressive Transition™ Waveguide
• Low Frequency Driver    :    JBL M115-8A
• Input Connectors    :    Parallel Neutrik® Speakon® NL-4 (x1); .25in TS phone jack (x1)
• Grille    :    18-gauge, powder-coated steel
• Mounting & Suspension    :    36 mm, dual-angle pole-mount socket