Self Powered



LSS's OCTO21A loudspeaker system provides high output, lowdistortion sound reinforcement. OCTO21A was designed for a wide range of professional applications.

Speaker Power

• 3400 W (EIAJ) - 8 Ohms
• 6800 W (PEAK) - 8 Ohms
360° (single unit)
(96dB 1 Watt @ 1 m)
131 dB Max SPL (EIAJ) calc. 
134 dB Max SPL (PEAK) calc.

  • OCTO21A E9b5365caf
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This system enclosure user 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 woofer is mounted in a reflex box hard and reinforced with 30mm front and rear panel. The OCTO21Apowering mode is active with digital processor.High output,bass response and low distortion make the OCTO21A surprising in terms of performance. The OCT021A is the ideal product to be paired with speakers such as, SP530, SP640, PSAT1, PSAT2, AR210, AR208 or similar.


LSS's OCTO21A is ideal product for bass frequency reinforcement for concert touring applications. LSS OCTO21A is a subwoofer of high peak low frequency response in the range 30-150Hz.

  • 21" Reflex Subwoofer System
  • Powering Mode: Self Powered with 2200 W Digital Power Module
  • For Touring or Permanent Installation


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

Weights Kilograms
• Net Weight 72 
• Shipping Weight 78 

Enclosure Material

• Enclosure Material: Birch Plywood of 18/30 mm
• Finish: Texture Polyurethane Black Paint
• Grille: Powder Coated Perforated Steel with anti-dust foam
• Connectors: Neutrik XLR In & Out + AC Power: 240V, Powercon In & Out


Frequency Response
• ±5 dB 30 Hz to 120 Hz 
• -10 dB 25 Hz 

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

Max SPL Calculated
• 129 dB 

Nominal Input Impedance (Ohms) 

• LF 8

Power Handling (Watts EIAJ) 
• LF 2200 

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

Product Series OCTO
• LF Subsystem & Loading 547mm (21") woofer vented 
• Powering mode is self powered with digital power module
• Four casters Guitel


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