The LS400 Sub-Bass is a compact VLF extension unit designed to complement Nexo's PS8 Loudspeakers, extending their usable range down to 40Hz. Featuring a shielded 12-inch Neodymium driver with negligible magnetic leakage (14.6kg/32lbs), it delivers high power output with 131dB peak SPL capability. The enclosure measures 338mm × 500mm × 406mm and weighs 19.5kg (43lbs), incorporating dual NL4MP Speakon connectors and an integral pole mount capable of supporting one or two PS8 loudspeakers. With frequency response of 43Hz-120Hz (±3dB) and recommended amplifier range of 300-700W at 6Ω impedance, it provides reliable low-frequency reinforcement for touring and installation applications requiring space-efficient sub-bass solutions.