Detail JBL PRX 718 XLF ACTIVE SUBWOOFER ( SUBWOOFER AKTIF )
ACTIVE SUBWOOFER ( SUBWOOFER AKTIF ) JBL PRX 718 XLF
18" Self-Powered Extended Low Frequency Subwoofer System
The PRX718XLF, extended low frequency subwoofer was designed and engineered to provide sub bass frequencies with accuracy and power. Used as a single sub in a sub/ sat system or in multiples as part of a scalable, large format sound reinforcement system, the PRX718XLF performs with extreme efficiency and control.
FEATURES :
134 dB peak SPL
18" Differential Drive® low-frequency driver for low-distortion and higher SPL
Efficient Class-D amplifier technology
DSP Input limiter circuit, crossover, dynamic limiting, component optimization, selectable system EQ
Integrated stereo pass-thru, with selectable HP filter, and polarity reverse
2 x XLR-1/ 4" combination inputs, with 2 x XLR loop-thru
Pole receptacle accepts a SS4-BK or SS4-BK24 on the top panel
Multiple handles with comfort rubber grips for easy transport
Lightweight poplar plywood cabinets made structurally sound with tongue and groove joints and protected by JBL’ s tour proven DuraFlex™ finish.
Cloth backed, dent-resistant 16 gauge steel grilles
APPLICATIONS :
The PRX718XLF extended low frequency subwoofer was designed and engineered to provide sub bass frequencies with accuracy and power. Used as a single sub in a sub/ sat system or in multiples as part of a scalable, large format sound reinforcement system, the PRX718XLF performs with exceptional efficiency and control. The subs are stackable and light-weight ensuring quick set-ups and tear-downs. And due to their rugged construction are perfect for AV rental inventories. With a pole receptacle ( that accepts a SS4-BK or SS4-BK24) on the top panel and integrated stereo pass-thru this is the most powerful low-frequency complement to the PRX full-range systems. The addition of a polarity reverse option further enables system optimization.
The PRX718XLF is a high performance self-powered subwoofer system. The PRX718XLF is comprised of a powerful 2278G Differential Drive® dual voice-coil and magnetic gap, woofer driven by a 1500 Watt Class-D power amplifier. Sophisticated DSP is at the core of a fully featured input section, providing user selectable cross-over functionality, polarity optimization, protection, dynamic limiting and discrete component optimization.
All PRX700 cabinets are built from a combination of 25mm ( on the top and bottom for added rigidity) and 18mm, strong, light-weight poplar plywood made structurally sound with tongue and groove joints. All PRX700 Series cabinets are protected by JBL’ s tour proven DuraFlex™ finish. Grilles are made from dent-resistant 16 gauge steel and handles are made from light-weight glass-filled nylon for added strength and durability.
The amplifier input panel offers stereo inputs with XLR or ¼ inch jack compatibility. A user selectable crossover ensures a smooth transition to full-range system connected to the stereo outputs. Signal present and limiter lights indicate the system status and assist in setting the optimum level via the level control knob.
SPECIFICATIONS :
Power Rating 1500 W
Frequency Range ( -10 dB) 30 Hz - 103 Hz
Frequency Response ( ± 3 dB) 35 Hz – 87 Hz
Internal Crossover Frequency 100 Hz DSP controlled 48 dB filter slope
Loop out Crossover Frequency 120 Hz analog 24 dB filter slope
Maximum SPL 134 dB peak
Signal indicators Limit: Yellow LED indicates peak output has been reached and dsp
limiter is acting
Signal: Green LED indicates signal present
Power/ Standby: Blue indicates system has power and ready to pass audio,
Red indicates system has power but is in a power saving mode and will not
pass audio.
Dynamic Control ( Input) dbx Type IV™ limiter circuit
Input Impedance 20K Ohms ( balanced)
Polarity normal or reverse polarity
LF Driver 1 x JBL 2278G 460 mm ( 18 in) woofer
Enclosure Rectangular, 18 mm, plywood
Suspension / Mounting M20 threaded pole socket on top
Transport 2 x injection molded handles with backing cup
Finish Obsidian DuraFlex™ finish
Grille Powder coated, Obsidian, 16 gauge perforated steel with acoustical transparent black cloth backing.
Input Connectors Two Balanced female XLR/ 1/ 4" combo connectors
Output Connectors Two balanced male XLR connectors.
Dimensions ( H x W x D) 690.372 mm x 523.24 mm x 723.9 mm
( 27.18 in x 20.60 in x 28.50 in)
Net Weight 36.8 kg ( 81 lb.)
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