Text preview for : Jbl-JRX118SP actsub.pdf part of JBL JRX118SP active subwoofer
Back to : Jbl-JRX118SP actsub.pdf | Home
JRX118SP
Key Features:
The rugged enclosure is constructed from 19 mm (¾ in) MDF (Medium Density Fiberboard) using advanced adhesives and mechanical fastener technology for durability and improved lowfrequency performance. The enclosure is covered in black carpet. Heavy duty, all steel handles are used. A top mounted, cast aluminum 35 mm pole mount receptacle can receive an optional SS3BK pole to facilitate use of the JRX118SP as a base for a mid-high speaker cabinet. Built-in 500 watt (peak), 300 watt (continuous) amplifier. Controls, connectors, and indicators are clearly labeled with large, highcontrast graphics for easy operation in poorly lit environments. Integral, preset limiter prevents clipping distortion. An LED illuminates to indicate that limiting is taking place. Line-level stereo inputs are summed before being sent to the subwoofer's internal amplifier. This feature allows the JRX118SP to operate in stereo systems using a single subwoofer. An integral crossover also provides balanced, line-level, stereo, highpassed outputs to feed powered satellite speakers or an external amplifier for passive satellites. A speaker-level, ¼" TS phone jack is provided. This input is useful in applications, such as those employing powered mixers, in which it is more practical to bring a full-range, speaker-level signal to the subwoofer amplifier. The JRX118SP is an 18 inch directradiating powered subwoofer. A built-in 500 watt (peak) amplifier accepts stereo or mono line level inputs via balanced, XLR connectors as well as single channel speaker level input via a ¼ inch phone jack. Integral signal processing includes a stereo crossover and limiting for the internal amplifier. A pair of XLR output connectors may be used to pass the input signals to another system or to send a high-passed, line-level stereo signal to a pair of powered, full-range speakers.
18 Inch Compact Powered Subwoofer
With JRX112M and available SS3BK
The JRX118SP is designed to supplement and extend the low frequency performance of full-range systems in live sound and music playback applications. It is an excellent choice for use with powered full-range speakers or in systems using powered mixers.
Specifications:
System Type: Frequency Range (-10 dB):1 Frequency Response (±3 dB):1 Nominal Impedance: Rated Maximum SPL2: Dimensions (H x W x D): Net Weight: Shipping Weight: LF Driver: Amplifier Power: Peak: Input Connectors: Input Impedance: Input Sensitivity: Maximum Input Level: Output Connectors: Crossover: Required AC Mains: AC Line Current: Powered, 18" compact subwoofer 38 Hz - 300 Hz 55 Hz - 300 Hz 4 123 dB peak, @1 m (3.3 ft) at 500 watts 605 mm x 508 mm x 592 mm (23.8 in x 20.0 in x 23.3 in) 40.4 kg (89 lb) including casters 45 kg (99 lb) 2043-G Continuous: 300 watts with < 0.2% THD 500 watts 2 x XLR/F, balanced, line level 1 x ¼" phone jack, speaker level Nominally 20k Ohms, electronically balanced 0.5 Vrms for 300 watt output (SUB LEVEL control fully clock-wise) INPUTS A & B: +4 dBu (nominal), +22 dBu (max.), one channel driven 2 x XLR/M LPF: 100 Hz, 24 dB / Oct Infrasonic filter: 25 Hz, 18 dB / Oct 50/60 Hz (North American units are 60 Hz only); 120 and 230240 VAC (±10%) units are available 120 volts: 1.4 A at power with sine-wave input, 3.6 A at max. power with pink noise input 230-240 volts: 0.7 A at power with sine-wave input, 1.8 A at max. power with pink noise input No more than 20 watts
Power Consumption at Idle:
1 2
Frequency Range and Frequency Response are based on half-space conditions. Calculated half-space (2 ) performance based upon peak power capacity.
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.
JRX118SP 18 Inch Compact Powered Subwoofer
Frequency Response:
Half Space (2)
Block Diagram:
Whole Space (4)
Panel:
Dimensions
605 (23.8)
33 (1.3)
475 (18.7)
43 (1.7)
549 (21.6) 592 (23.3)
508 (20.0)
277 (10.9)
Dimensions in mm (in)
JBL Professional 8500 Balboa Boulevard, P.O. Box 2200 Northridge, California 91329 U.S.A.
A Harman International Company © Copyright 2004 JBL Professional
SSJRX118SP CRP 10M 03/04