JBL Speaker JRX212 User Manual

12 Inch Two-Way  
Stage Monitor  
Loudspeaker System  
JRX212  
Key Features:  
JBL 12 in low frequency driver  
with a 64 mm (2.5 in) diameter  
edgewound 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  
realibility.  
The advanced network topology  
crossover design shapes frequency  
response and delivers “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.  
The JRX212 is a portable, twelve-inch, two-way speaker system designed  
specifically for live performance stage monitoring applications. With enough  
sensitivity and power handling to cut through the performance volume on  
stage, the JRX212 has a smooth response so it can deliver maximum gain  
before feedback. It also includes JBL’s dual-angle pole socket making it  
equally at home as a front-of-house speaker.  
Progressive Transition™ high  
frequency waveguide provides  
superior coverage control, reduced  
distortion, and smoother frequency  
response.  
Specifications:  
4Frequency Range (-10 dB) : 75 Hz – 20 kHz  
2Frequency Range (-10 dB) : 60 Hz – 20 kHz  
4Frequency Response ( 3 dB) : 110 Hz – 18 kHz  
2Frequency Response ( 3 dB) : 80 Hz – 18 kHz  
System Type: 12" 2-way, stage monitor  
1
The rugged, acoustically superior  
enclosure is constructed from  
19 mm (.75 in) MDF (Medium  
Density Fiberboard) using  
1
1
1
Sensitivity (1w/1m): 98 dB  
advanced adhesives and  
Nominal Impedance: 8 ⍀  
mechanical fastener technology for  
extreme durability and improved  
low-frequency performance.  
2
Power Capacity : 250 watts  
2
Peak Power Capacity : 1000 watts  
Recommended Amplifier 250-500 watts @ 8 ⍀  
Power:  
SonicGuard™ protects the high-  
frequency driver from excess  
power without interrupting the  
performance.  
Maximum SPL: 128 dB  
Nominal Dispersion: 90° x 50°  
Crossover Frequency: 2.1 kHz  
3
Dimensions (H x W x D): 584 mm x 399 mm x 325 mm  
(23 in x 15.7 in x 12.8 in)  
Weight: 19.5 kg (43 lb)  
Shipping Weight: 22.0 kg (49 lb)  
Non-resonant, all-steel handles are  
used.  
Attractive 18-gauge hexagon  
perforated, steel grille protects  
components from damage.  
High Frequency Driver: JBL 2414H-C 1" exit compression driver mounted on  
Progressive Transition™ Waveguide  
Low Frequency Driver: JBL M112-8  
®
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Input Connectors: Neutrik Speakon NL-4 (x1); ¼" TS phone jack (x1); parallel  
Dual-angle pole-mount socket  
allows the speaker to tilt 10° for  
more uniform audience coverage.  
Enclosure Construction: 19 mm (¾ in) MDF (Medium Density Fiberboard); with  
glued and mechanically fastened joint detail; covered in  
black carpet.  
Grille: 18-gauge, powder-coated steel  
Mounting & Suspension: 36 mm, dual-angle pole-mount socket  
1.  
2.  
“Frequency Range” and “Frequency Response” are based on half-space response.  
“Power Capacity” and “Peak Power Capacity” ratings are based on the average and peak power capacity of product  
samples subjected to a 100 hour power test using random noise with a 6 dB crest factor, in accordance with IEC  
standards.  
3.  
Height dimension includes feet.  
JBL continually engages in research related to product improvement. Some materials, production methods and design  
refinements are introduced into existing products without notice as a routine expression of that philosophy. For this  
reason, any current JBL product may differ in some respect from its published description, but will always equal or  
exceed the original design specifications unless otherwise stated.  
 

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