The JBL PRX815XLF is a self-powered extended low-frequency subwoofer system designed for professional sound reinforcement applications. Let's break down some of its key features and applications based on the information you provided:

Key Features:

1. 
   

   Built-in Wi-Fi and PRX Connect App:

   
   
   
   
   
   • Allows wireless control of the system from anywhere in the venue.
   
   
   • The PRX Connect mobile app (available for iOS and Android) provides wireless control over volume levels, 8-band parametric EQ, and up to 50ms of speaker delay for fine-tuning.
   
   
   
   


2. 
   

   Powerful Amplification:

   
   
   
   
   
   • Features a class-D amplifier with a substantial 1500-watt power rating, providing ample power to fill venues with deep and powerful low frequencies.
   
   
   
   


3. 
   

   Transducer Technology:

   
   
   
   
   
   • Utilizes JBL Differential Drive® transducers for higher sound pressure levels (SPL) in a lightweight design.
   
   
   • Employs next-generation JBL neodymium compression drivers for enhanced performance.
   
   
   
   


4. 
   

   Input Connectivity:

   
   
   
   
   
   • Redesigned Crown input technology includes XLR, 1/4”, and RCA inputs, along with XLR loop-through for flexible connectivity options.
   
   
   
   


5. 
   

   Intelligent Cooling:

   
   
   
   
   
   • Incorporates an intelligent variable-speed fan that activates only when needed, reducing noise and optimizing cooling efficiency.
   
   
   
   


6. 
   

   Tuning and Durability:

   
   
   
   
   
   • Updated tuning delivers a flat frequency response and smooth off-axis behavior.
   
   
   • Durable wooden cabinets with tour-proven DuraFlex™ finish and dent-resistant 16-gauge grilles ensure longevity and robustness.
   
   
   
   


7. 
   

   Universal Power Supply:

   
   
   
   
   
   • Equipped with a universal power supply for worldwide compatibility.
   
   
   
   


8. 
   

   dbx Type IV™ Limiting:

   
   
   
   
   
   • Incorporates dbx Type IV™ limiting technology to ensure clear and accurate sound even at high volumes.
   
   
   
   


9. 
   

   Reliability Testing:

   
   
   
   
   
   • Undergoes a brutal testing regimen, including the famous JBL 100-hour power test, to ensure reliable performance.
   
   
   
   

Applications:

1. 
   

   Sub-Bass Frequencies:

   
   
   
   
   
   • Designed to provide accurate and powerful sub-bass frequencies.
   
   
   • Suitable for use as a single sub in a sub/sat system or in multiples as part of a scalable, large format sound reinforcement system.
   
   
   
   


2. 
   

   Efficiency and Control:

   
   
   
   
   
   • Performs with exceptional efficiency and control.
   
   
   • Stackable and lightweight design for quick setup and tear-down, making it ideal for AV rental inventories.
   
   
   
   


3. 
   

   Integration with PRX Full-Range Systems:

   
   
   
   
   
   • Integrates seamlessly with PRX full-range systems, serving as a powerful low-frequency complement.
   
   
   • Integrated stereo pass-thru for added versatility.
   
   
   
   


4. 
   

   DSP Control:

   
   
   
   
   
   • High-performance self-powered subwoofer system with remote Wi-Fi control of onboard DSP EQ parameters.
   
   
   • Features sophisticated DSP for user-selectable cross-over functionality, polarity optimization, protection, dynamic limiting, and discrete component optimization.
   
   
   
   


5. 
   

   Construction and Connectivity:

   
   
   
   
   
   • Built from strong, lightweight poplar plywood with tongue and groove joints.
   
   
   • DuraFlex™ finish for protection, dent-resistant 16-gauge steel grilles, and glass-filled nylon handles for strength and durability.
   
   
   • Amplifier input panel offers stereo inputs with XLR or 1/4 inch jack compatibility, user-selectable crossover, and signal present/limiter lights for system status indication.
   
   
   
   

In summary, the JBL PRX815XLF is a versatile and powerful subwoofer system designed to deliver high-quality low-frequency reproduction in various professional audio applications. Its features, including built-in Wi-Fi control, powerful amplification, advanced transducer technology, and durable construction, make it a reliable choice for sound reinforcement needs.



System Type     Self Powered 15” subwoofer

Maximum SPL Output     131 dB peak

Frequency Range (-10dB)     36 Hz - 98 Hz

Frequency Response (±3 dB)     40 Hz – 87 Hz

Inputs     Two Balanced female XLR/ 1/4” combo connectors

Input Impedance     20K Ohms (balanced)

Signal Indicators     Limit: Yellow LED indicates peak output has been reached and dsp limiter is acting Signal: Green LED indicates signal presentPower: Blue indicates system has power and ready to pass audio.

Dynamic Control (Input)     dbx Type IV™ limiter circuit

System Low Pass     80 Hz DSP

Loop out Crossover Frequency     80 Hz Digital 24db/octave Linkwitz-Riley Filter

Design     Highly efficient Class-D amplifier

Power Rating     1500W

AC power input     100V - 240V ~ 50/60 Hz

LF Driver     1 x JBL 2275H 15 in woofer

Enclosure     Rectangular, 18 mm, birch-poplar mix

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.

Dimensions (H x W x D)     548 mm x 446 mm x 572 mm (21.6 in x 17.5 in x 22.5 in)

Net Weight     26.3 kg (58.0 lb)

Gross Weight     30.3 kg (66.8 lb)

Mic Inputs     2

Phantom Power     No

EQ     8-band parametric EQ

Effects     25 parametric EQ's and speaker delay

Outputs     1 x XLR (mix out)