JBL Car Speaker JRX218S User Manual

18" Compact  
Subwoofer  
JRX218S  
Key Features:  
18 in compact subwoofer.  
350 W (continuous), 1400 W  
(peak) power capacity.  
The rugged enclosure is  
constructed from 19 mm  
(.75 in) MDF (Medium Density  
Fiberboard) using advanced  
adhesives and mechanical  
fastener technology for  
durability and improved low-  
frequency performance. The  
enclosure is covered in black  
carpet.  
A top mounted, cast aluminum  
36 mm pole mount receptacle  
can receive an optional SS3BK  
pole to facilitate use of the  
JRX218S as a base for a  
Specifications:  
4Frequency Range (-10 dB) : 35 Hz – 250 Hz  
2Frequency Range (-10 dB) : 34 Hz – 250 Hz  
4Frequency Response ( 3 dB) : 54 Hz – 250 Hz  
2Frequency Response ( 3 dB) : 53 Hz – 250 Hz  
System Type: 18" compact subwoofer  
midhigh speaker cabinet.  
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1
Non-resonant, all steel handles  
are used.  
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1
Sensitivity (1w/1m): 98 dB  
Attractive 18-gauge hexagon  
perforated steel grille protects  
components from damage.  
Nominal Impedance: 4 ⍀  
2
Rated Maximum SPL : 133 dB peak, @1 m (3.3 ft)  
3
Power Capacity : 350 watts  
3
Peak Power Capacity : 1400 watts  
The JRX218S is an 18" compact  
Recommended Amplifier 350 - 700 watts  
Power: @ 4 ohms  
Dimensions (H x W x D): 605 mm x 508 mm x 551 mm  
(23.8 in x 20.0 in x 21.7 in)  
direct-radiation subwoofer  
designed to supplement and  
extend low frequency  
performance of full-range systems  
in live sound and music playback  
applications.  
Net Weight: 32.2 kg (71 lb)  
Shipping Weight: 36.8 kg (81 lb)  
LF Driver: M118-4  
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Input Connectors: Neutrik Speakon NL-4 (x2); parallel  
Enclosure Construction: 19 mm (¾ in) MDF (Medium Density Fiberboard) with glued  
The JRX218S is driven by a  
massive JBL 18" woofer with a  
stamped steel frame and 3" voice-  
coil. It’s rated at 350 watts  
(continuous) and 1400 watts  
(peak) – based on JBL  
and mechanically fastened joint detail; covered in black  
carpet.  
Grille: 18-gauge, powder-coated steel  
Optional Accessory: SS3-BK  
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2
3
Frequency Range and Frequency Response are based on half-space conditions.  
Calculated half-space (2) performance based upon peak power capacity.  
“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.  
Professional’s 100 hour extended  
life test.  
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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