The LS400 Sub-Bass extends the usable range of the PS8 Loudspeaker to 40Hz, providing high performance and high power output (131dB Peak) in an extremely compact, light weight package. The NEXO-designed shielded 12in Neodymium driver allows the LS400 to be used in close proximity to magnetically sensitive video equipment. Two LS400s are typically used with two PS8 loudspeakers, additional units may be used for an enhanced LF impact. PS8 and LS400 presets in the DTD Controller ensure cost-effective and simple system implementation while the NXAMP powered controller offers full network connectivity and the facility to combine PS8/LS400 configurations with any other Nexo cabinets.

Key Features

  • High-power system (131dB Peak SPL @ 1m) with 12in VLF low magnetic emission Neodymium driver for light weight (14.6kg, 32lbs) and negligible magnetic leakage
  • VLF extension (to 40Hz) of PS8 Loudspeakers. Sophisticated control electronics ensure reliable, linear operation
  • ntegral pole mount that supports one or two PS8 loudspeakers


Frequency Response [a]43 Hz - 120 Hz ±3dB
Usable Range @-6dB [a]40 Hz - 140 Hz
Sensitivity 1W @ 1m [b99 dB SPL Nominal
Nominal Peak SPL @ 1m [b]128 to 131 dB Peak
Crossover Frequencies40-85, 40-120 or 60-120 Hz
Nominal Impedance
Recommended Amplifiers300 to 700 Watts / 4Ω


Components1 x 12” ( 30cm ) long excursion 6Ω Neodynium driver
Height x Width x Depth338mm x 500mm x 406mm
(13 1/4” x 19 5/8’” x 16”)
Weight19.5 kg (43 lbs)
Connectors2 x NL4MP Speakon 4 pole
FittingsHandles 2 Metal recessed pockets
Stand fittingsInternal stand fitting on top (35mm /1 3/8”) allows pole mounting