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JBL 4181 - Single 18" Bass Reflex Subwoofer

JBL 4181 - Single 18" Bass Reflex Subwoofer


 
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Product Code : 4181
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Description
 

JBL 4181 - Single 18" Bass Reflex Subwoofer


Single 460 mm (18") Cinema Subwoofer System
The JBL Model 4181 is a high quality subwoofer system, featuring a 460 mm (18 in), low frequency transducer mounted in a direct radiator, bass-reflex enclosure for smooth response to the lowest audible frequencies. The 4181 is ideal for low-frequency augmentation of digital soundtracks in motion picture theaters and for general sound reinforcement applications.
FEATURES
  • 500 Watts continuous pink noise, 1000 Watts continuous program power handling
  • Usable response to 28 Hz (-10 dB, no EQ), flat to 34Hz (-3 dB) with External EQ
  • Dual coils in parallel, vented cooling driver
    - High Sensitivity
    - Low Power Compression
    - High Maximum - SPL Capability
    - Low 2nd and 3rd Harmonic Distortion
    - Long Excursion Capability

SPECIFICATIONS
Rated Impedance8 ohms
Minimum Impedance5.6 ohms
Continuous Pink Noise500 Watts
Continuous Program1000 Watts
Peak Power2000 Watts
Axial Sensitivity50 Hz to 500 Hz; 101 dB, 1W @ 1m
40 Hz to 100 Hz; 99 dB, 1W @ 1m
Half-Space Reference EfficiencySingle Module: 5%
Two Modules: 10%
Three Modules: 15%
Four Modules: 20%
Max. Continuous Acoustical Power OutputSingle Module: 25W
Two Modules: 100W
Three Modules: 225W
Four Modules: 400W
Maximum Continuous SPL @ 1 meterSingle Module: 126 dB
Two Modules: 132 dB
Three Modules: 136 dB
Four Modules: 138 dB
Maximum Peak SPL @ 1 meterSingle Module: 132 dB
Two Modules: 138 dB
Three Modules: 142 dB
Four Modules: 144 dB
Frequency ResponseLower Frequency Limits (no EQ):
-10 dB: 28 Hz
-3 dB: 40 Hz
Lower Frequency Limits (with EQ):
-10 dB: 26 Hz
-3 dB: 34 Hz
Recommended Crossover Frequencies:High-pass: 20 Hz, 24 dB/octave or greater
Low-pass: 80 Hz to 150 Hz, 12 dB/octave or greater
Distortion
2nd harmonic
3rd harmonic

<3%
<2@
System PolarityEIA Standard. Positive voltage to RED terminal produces forward cone motion.
Input ConnectorsColor-coded binding posts
Nominal Diameter460 mm (18 in)
Materials and Finish15mm MDF. Extensive bracing on all panels. Vinyl laminated.
Enclosure Tuning Frequency30 Hz
Net Internal Volume255 liters (9 cu. ft)
Dimension (H x W x D)1100 mm x 640 mm x 450 mm
(43 1/3 in x 25 1/5 in x 17 3/4 in)
Net Weight44 kg (96 lbs.)
Shipping Weight50 kg (109 lbs.)


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