Sub Woofers



LSS's OCTO21 loudspeaker system provides high output, lowdistortion sound reinforcement. OCTO21 was designed for a wide range of professional applications.

Speaker Power

2000 W (AES) - 8 Ohms
360° (single unit)
(96dB 1 Watt @ 1 m)
136 dB Max SPL calculated

  • OCTO21 1 B1d0896c71
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This system enclosure uses one woofers of 547 mm (21") very high excursion cone with 150 mm (6") voice coil and Neodymium magnet structure. This driver is ideal for reproduce very low frequencies. High performance and very high peak output for concert sound. The OCTO21powering mode is only passive amplified operation with external digital processor.High output,bass response and low distortion make the OCTO21 surprising in terms of performance. The OCT021 is the ideal product to be paired with speakers such as, SP530, SP640, PSAT1, PSAT2, AR210, AR208 or similar.


LSS's OCTO21 is ideal product for bass frequency reinforcement for concert touring applications. LSS OCTO21 is a subwoofer of high peak low frequency response in the range 30-150Hz.

  • 21" Reflex Subwoofer System
  • Powering Mode: Passive with external Digital Processor
  • For Touring Use or Permanent Installation


Dimensions mm (±1 mm) 
• Height 700
• Width 600 
• Depth 800 

Weights Kilograms
• Net Weight 70 
• Shipping Weight 76 

Enclosure Material

• Enclosure material Birch Plywood of 18/30mm 
• Finish Texture poliuretanic black paint 
• Suspension 6 point mounting suspension 
• Grille Poweder coated perforated steel with anti-dust foam
• Connectors Two Neutrik NL4 speakon


Frequency Response
• ±5 dB 30Hz to 150 Hz 
• -10 dB 25Hz 

Sensitivity (dB 1 Watt @ 1 m) 
• LF 96dB 

Max SPL Calculated
• 129 dB 

Nominal Input Impedance (Ohms) 

• LF 8

Power Handling (Watts cont. AES) 
• LF 2000 

Nominal Dispersion 
• 360° (single unit); varies with number of units and configuration 

Product Series OCTO
• LF Subsystem & Loading 547mm (21") woofer vented 
• Crossover two-way 12/12 dB
• Operating Mode Passive with external digital processor
• Four casters Guitel


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