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JBL Professional JRX125 Speaker System

The JBL JRX100 series delivers the performance and prestige JBL is known for at a price you can afford. To meet these conflicting design goals, JBL looked at every element of the speaker system design, keeping everything that makes a speaker perform and sound its best while eliminating things that don't. With performance, value and popular price points, JBL is going to be building a lot of JRX100 speakers making it possible to apply efficient, high-volume production methods and purchasing materials at the lowest cost. That's how the JRX100 series delivers unprecedented value.

Dual 15" speaker systems have become one of the most popular configurations with DJs and musicians who are looking for more low-frequency performance while maintaining the simplicity of a single-box system. The JBL JRX125 is a, dual 15" speaker system that's at home in live sound, dance music and speech reinforcement. The JRX125 is actually a "quasi three-way" design, meaning that the upper woofer covers lows and mids while the bottom woofer uses a lower crossover frequency and covers only lows, acting as a built-in subwoofer. This design provides the extra low-end of a dual 15" system while maintaining the superior mid-frequency performance of a single driver system. It's equipped with low and high-frequency drivers built in JBL's Northridge, California factory. Features include Neutrik® Speakon® and ¼" input connectors.


  • 500W continuous program power handling.
  • Dual 15" woofers in quasi three-way design.
  • 1” exit compression driver mounted on Progressive Transition waveguide.
  • Non resonant all steel carrying handles.
  • 18-gauge perforated steel grille.
  • Rubber feet.
  • Finished with impact-resistant black carpet.

Detailed Features

JBL 2412H Compression Driver


The JRX115 uses the 2412 compression driver and M115-8A woofer. The M115-8A 380mm (15-inch) woofer has a 64mm edge-wound voice coil for high power handling and maximum output. All JRX100 series two-way speakers include JBL’s SonicGuard high-frequency driver protection. SonicGuard circuitry absorbs excess energy without interrupting the performance. No circuit breakers to reset, no fuses to replace and no "poly-switches" to degrade sound quality.

JBL M115-8A Woofer Speaker

100 Hour Torture Test

Like all JBL Professional products, the JRX Series is brutalized in JBL’s speaker torture test. Unique in the industry, the JBL torture test submits each component in the MRX Series to 100 hours of continuous, high level input, ensuring that the JRX will deliver its extraordinary sound even after years of tough handling and thousands of hours of performance.

Technical Specifications

System Type Dual 15" two-way sound reinforcement speaker
Impedance 4 ohms
Frequency Response 45 Hz to 12 kHz (+/- 3 dB)
HF Dispersion 90 x 50 degrees
Crossover Frequency 2 kHz
Crossover Mode Passive
Sensitivity @ 1W/1M 100 dB SPL
Maximum SPL 133 dB
Power Handling Continuous 500W
  Peak 2000W
High Frequency Driver JBL 2412 25mm (1") exit compression driver
Low Frequency Driver JBL M115-8A 380mm (15") (x2)
Input Connectors 1/4" Jack (x1) Neutrik NL4 Speakon (x1) in parallel
Construction 19 mm (¾ in) MDF (Medium Density Fiberboard); with glued and mechanically fastened joint detail; covered in black carpet. 18-gauge, powder-coated steel grille.


Width ..... 464 mm
Depth ..... 426 mm
Height ..... 1092 mm
Weight .... 42.6 Kg
  JBL JRX125 Speaker Dimensions

Ordering Information

Description Order Code
JBL JRX125 Speaker 2 Way, 2x 15" + 1" Horn JBL-JRX125
The information presented on this page is provided by courtesy of JBL Professional.
Revised: 22-Dec-2010 Copyright (C) 2010 Adena Limited