LSS's PSUB4 loudspeaker system provides high output, low distortion sound reinforcement. PSUB4 was designed for a wide range of professional applications.

Speaker Power

1500 W (AES) - 8 Ohms
360° (single unit)
(105dB 1 Watt @ 1 m)
143 dB Max SPL calculated

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This system enclosure uses one woofer of 460 mm (18") with Neodymium magnet and New Tecnology Split Winding 100 mm (4") voice coil. High performance and very high peak output for concert sound. The PSUB4 powering mode is only passive amplified operation with external digital processor.


LSS's PSUB4 is ideal product for bass frequency reinforcement for concert touring applications. LSS PSUB4 is a subwoofer reflex of high peak low frequency response in the range 35-120Hz.

  • Two 460 mm LF SUBWOOFER
  • Powering mode passive with external digital processor
  • For touring use or permanent installation


Dimensions mm (±1 mm)
• Height 940
• Width 600
• Depth 860 

Weights Kilograms
• Net Weight 75
• Shipping Weight 85 

Enclosure Material
• Enclosure material Birch Plywood of 18mm
• Finish Texture poliuretanic black paint
• Connectors Two Neutrik NL4 speakon


Frequency Response
• ±5 dB 35 Hz to 120 Hz
• -10 dB 31 Hz 

Sensitivity (dB 1 Watt @ 1 m)

• LF 105 dB

Max SPL Calculated
•  137 dB

Nominal Input Impedance (Ohms)

• Full Range Passive 8
• LF 8 

Peak Power (Watts)
• LF 6000

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

Product Series PSUB 
• LF Subsystem & Loading Two 460 mm (18")  woofer vented 
• Operating Mode Passive with external digital processorted 
• Operating Mode Passive with external crossover


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