CARATTERISTICHE TECNICHE
Il JRX118SP è un subwoofer amplificato. E' stato porgettato per una ottima performance di suono in basse frequenze, in particolare per applicazioni di musica live e playback.
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.
Technical Data
• System Type: Powered, 18" compact subwoofer
• Frequency Range (-10 dB):1 38 Hz - 300 Hz
• Frequency Response (±3 dB):1 55 Hz - 300 Hz
• Nominal Impedance: 4
• Rated Maximum SPL2: 123 dB peak, @1 m (3.3 ft) at 500 watts
• LF Driver: 2043-G
• Amplifier Power: Continuous: 300 watts with < 0.2% THD
• Peak: 500 watts
• Input Connectors: 2 x XLR/F, balanced, line level; 1 x ¼" phone jack, speaker level
• 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 & B: +4 dBu (nominal), +22 dBu (max.), one
channel driven
• Output Connectors: 2 x XLR/M
• Crossover: LPF: 100 Hz, 24 dB / Oct
• Infrasonic filter: 25 Hz, 18 dB / Oct
• Required AC Mains: 50/60 Hz (North American units are 60 Hz only); 120 and 230-
240 VAC (±10%) units are available
• AC Line Current: 120 volts: 1.4 A at ⅛ power with sine-wave input, 3.6 A at
max. power with pink noise input
230-240 volts: 0.7 A at ⅛ power with sine-wave input, 1.8 A at
max. power with pink noise input
• Power Consumption at Idle: No more than 20 watts
• Dimensions (H x W x D): 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)
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Subwoofer 
