Jbl-JRX118SP actsub电路图.pdf

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1、JRX118SP Key Features: ?The rugged enclosure is constructed from 19 mm ( 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. ?Heavy duty, all steel handles ar

2、e 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) amplifi er. Controls, connectors, and indicators are clearly labeled with

3、large, high- contrast 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 subwoofers internal amplifi er. This featu

4、re allows the JRX118SP to operate in stereo systems using a single subwoofer. ?An integral crossover also provides balanced, line-level, stereo, high- passed outputs to feed powered satellite speakers or an external amplifi er for passive satellites. ?A speaker-level, TS phone jack is provided. This

5、 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 amplifi er. The JRX118SP is an 18 inch direct- radiating powered subwoofer. A built-in 500 watt (peak) amplifi er accepts stereo or mon

6、o line level inputs via balanced, XLR connectors as well as single channel speaker level input via a inch phone jack. Integral signal processing includes a stereo crossover and limiting for the internal amplifi er. A pair of XLR out- put connectors may be used to pass the input signals to another sy

7、stem or to send a high-passed, line-level stereo signal to a pair of powered, full-range speakers. The JRX118SP is designed to supplement and extend the low frequency performance of full-range systems in live sound and music playback appli- cations. It is an excellent choice for use with powered ful

8、l-range speakers or in systems using powered mixers. Specifi cations: System Type: Powered, 18 compact subwoofer Frequency Range (-10 dB):138 Hz - 300 Hz Frequency Response (3 dB):155 Hz - 300 Hz Nominal Impedance: 4 ? Rated Maximum SPL2: 123 dB peak, 1 m (3.3 ft) at 500 watts Dimensions (H x W x D)

9、: 605 mm x 508 mm x 592 mm (23.8 in x 20.0 in x 23.3 in) Net Weight: 40.4 kg (89 lb) including casters Shipping Weight: 45 kg (99 lb) LF Driver: 2043-G Amplifi er Power: Continuous: 300 watts with 0.2% THD Peak: 500 watts Input Connectors: 2 x XLR/F, balanced, line level 1 x phone jack, speaker leve

10、l Input Impedance: Nominally 20k Ohms, electronically balanced Input Sensitivity: 0.5 Vrms for 300 watt output (SUB LEVEL control fully clock-wise) Maximum Input Level: INPUTS A 120 and 230- 240 VAC (10%) units are available AC Line Current: 120 volts: 1.4 A at power with sine-wave input, 3.6 A at m

11、ax. 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 Power Consumption at Idle: No more than 20 watts 1Frequency Range and Frequency Response are based on half-space conditions. 2Calculated half-space (2?) performance based upo

12、n peak power capacity. JBL continually engages in research related to product improvement. Some materials, production methods and design refi nements are introduced into existing products without notice as a routine expression of that philosophy. For this rea- son, any current JBL product may differ

13、 in some respect from its published description, but will always equal or exceed the original design specifi cations unless otherwise stated. 18 Inch Compact Powered Subwoofer With JRX112M and available SS3BK 71211_JBL_JRX118SP 3/11/04 3:19 PM Page 1 RadioFans.CN 收音机爱 好者资料库 JBL Professional 8500 Bal

14、boa Boulevard, P.O. Box 2200 Northridge, California 91329 U.S.A. Copyright 2004 JBL Professional A Harman International Company SSJRX118SP CRP 10M 03/04 ? JRX118SP 18 Inch Compact Powered Subwoofer Half Space (2) Whole Space (4) 605 (23.8) 277 (10.9) 508 (20.0) 475 (18.7) 33 (1.3) 549 (21.6) 43 (1.7) 592 (23.3) Frequency Response: Panel: Block Diagram: Dimensions Dimensions in mm (in) 71211_JBL_JRX118SP 3/11/04 3:19 PM Page 2 RadioFans.CN 收音机爱 好者资料库