Product Description
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
- • 20 mm threaded pole socket for solid, secure satellite speaker mounting.
- 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 2278H 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 | |
| AC Power Input | 100V – 240V~ 50/60 Hz | |
| 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. |
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| Dynamic Control (Input) | dbx Type IV™ limiter circuit | |
| Input Impedance | 20K Ohms (balanced) | |
| Polarity | normal or reverse polarity | |
| LF Driver | 1 x JBL 2278H 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.) |
