LS400 Sub-Bass

Light weight compact LS400 Sub-Bass extends the PS8 Loudspeaker's range to 40Hz, providing high performance and power output (131dB Peak).

LS400 Sub-Bass

The NEXO-designed shielded 12in Neodymium driver allows the LS400 to be used in close proximity to magnetically sensitive video equipment.

One LS400 is typically used with two PS8 loudspeakers, additional units may be used for an enhanced LF impact. The PS8 TDController’s integral sub section and combined signal (PS8 and LS400) Speakon wiring ensure cost-effective and simple system implementation.


  • High power system (131dB Peak SPL @ 1m)
  • The light-weight, 14.6kg (32lbs, 12" VLF neodymium driver displays low-magnetic emission and creates negligible magnetic leakage
  • VLF extension (to 40Hz) of PS8 Loudspeakers. Sophisticated control electronics ensure reliable, linear operation
  • Integral pole mount that supports 1x or 2x PS10 Loudspeakers

System Specifications LS400 with PS8 TDcontroller

Frequency Response[a]: 43 Hz - 120 Hz ±3dB
Usable Range @-6dB[a]: 40 Hz - 140 Hz
Sensitivity 1W @ 1m[b]: 99 dB SPL Nominal
Nominal Peak SPL @ 1m[b]: 128 to 131dB Peak
Crossover Frequencies: 120Hz Active through PS8TD
Nominal Impedance:
Recommended Amplifiers: 300 to 700-w into 4Ω
Components: VLF 1 x 12" (30cm) Shielded Neodymium long excursion 6Ω driver
Net Weight: 19.5kg
Connectors: 2 x NL4MP 4-pole SPEAKON
Construction: Baltic Birch Ply & textured, polyurethane black coating
Fittings Handles: 2 Metal Handles
Stand fittings: Internal Stand Fitting on Top (35mm) accepts a mast supporting 1 PS8

LS400 Sub Bass Dimension-Diagram

  • [a] Response curves & data: Half-Space radiation
  • [b] Sensitivity & Peak SPL data: These depend on spectral distribution and crest factor of program material. Measured with band limited Pink Noise. Nominal refers to (50Hz-200Hz), Wideband to the specified ±3dB range. Data are for speaker + processor + recommended amplifier combinations. Peak SPL is at clipping of recommended amplifier.

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