Check out the JBL ASB4128! It is a medium power subwoofer system comprised of two 460 mm (18 in) low frequency drivers in a front-loaded, vented configuration. The deep, rectangular cabinet allows for extended low frequency bandwidth with minimum frontal profile. The enclosure is fitted with M10 threaded suspension points. Pre-engineered array bracketry is available. 
 
Features:
 
- Large vent area for high output.
 
- Parallel/Discrete Switchable.
 
- See Array Guide on applications such as performing arts facilities, theatrical sound design, auditoriums, houses of worship, live clubs, dance-clubs/discotheques, sports facilities and themed entertainment venues.
 
Applications:
 
- Performing arts facilities 
  
- Theatrical sound design 
 
- Auditoriums 
 
- Houses of worship 
 
- Live clubs 
 
- Dance-clubs/discotheques 
  
- Sport facilities 
  
- Themed entertainment venues 
  
Specifications:
 
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 Frequency Range (-10 dB) 
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 20 Hz - 1 kHz 
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 Frequency Response (± 3 dB) 
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 25 Hz - 1 kHz 
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 Transducer Power Rating 
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 4000 W (16000 W peak), 2 hrs. 
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 Input Modes 
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 Drivers Parallel / Drivers Discrete 
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 Long-Term System 
Power Rating 
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 2400 W (9600 W peak), 100 hrs. 
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 Maximum SPL (1m) 
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 25 Hz - 200 Hz: 135 dB-SPL cont avg. (141 dB peak) 
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 System Sensitivity 
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 25 Hz - 200 Hz: 99 dB-SPL, 1W (2.0V) @ 1m 
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 Nominal Impedance 
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 4 ohms in parallel-drive mode 2 x 8 ohms in discrete-drive mode 
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 Low Frequency Driver 
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 2 x 2269H, 460 mm (18 in) dia., 100 mm (4 in) Dual Coil Dual Gap neodymium Differential Drive®, VGC™ drivers 
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 Enclosure 
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 Rectangular cabinet, 16 mm (5/8 in) exterior grade 11-ply birch plywood 
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 Suspension Attachment 
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 16 points (4 top, 4 bottom, 4 each side) M10 threaded hardware 
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 Finish 
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 Black DuraFlex™ finish. 
White available upon request. 
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 Grille 
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 Powder coated 14 gauge perforated steel, with acoustically transparent black foam backing. 
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 Input Connector 
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 NL4 Neutrik Speakon® and CE-compliant covered barrier strip terminals. Barrier terminals accept up to 5.2 sq mm (10 AWG) wire or max width 9 mm (.375 in) spade lugs. Speakon in parallel with barrier strip for loop-through. 
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 Environmental Specifications 
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 Mil-Std 810; IP-x3 per IEC529. 
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 Dimensions (H x W x D in 
vertical cabinet orientation) 
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 1092 x 560 x 815 mm 
(43.0 x 22.0 x 32.1 in) 
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 Net Weight 
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 71.9 kg (158.5 lb) 
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 Optional Accessories 
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 M10 x 35 mm forged shoulder eyebolts with washers. 
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