SSOUNDS · SS-LS310-SUB
SSOUNDS LS310 Sub
Flyable dual-18″ subwoofer for LS310 arrays, 23 Hz reach, 143 dB peak, flies on the same hang.
The LS310 Sub completes the LS310 system: a horn-designed bass-reflex dual-18″ subwoofer built to fly inside the LS310 array on an aluminium-alloy hoisting system, extending the hang's bandwidth down to 23 Hz without a separate sub hang. It takes a single NL4 feed from the system amplifier, so the sub run stays independent of the tops' NL8 loom. SSOUNDS specifies drivers for 143 dB peak output, in a braced birch-ply cabinet with water- and dust-resistant treatment. Ground-stack it when the design calls for floor bass.
Part of the LS System
Flyable dual-18 subwoofer on the shared array hardware.
LS stands for Line Source. A line source, in the acoustic sense: coupled elements radiating as one continuous source, so vertical pattern is set by the length of the array rather than by the individual cabinet.
Key features
- Flies inside LS310 arrays on the same titanium rigging, no separate sub hang
- Its NL8 carries the whole array loom: sub, LF, MF and HF on one cable per box
- 23 Hz reach and 143 dB peak SPL
- 2 × 18″ cone drivers, 4″ coil
- Horn-designed bass-reflex cabinet in braced birch ply
- Water- and dust-resistant treatment for outdoor work
- CardioSteer presets steer low-frequency energy off the stage
Specifications
Engineering data. The conditions each figure is specified under are stated below the table.
General
- Type
- Flyable dual-18″ subwoofer · horn-designed bass-reflex
- Certifications
- CE · TÜV · EAC · WEEE
Components
- Low frequency
- 2 × 18″ cone drivers, 4″ coil
Acoustic
Electrical
Connections
- Connectors
- 2 × NL4 speakON (in / link)
- Pin map
- 1+/1− SUB · 2+/2− not linked
Rigging
- System
- High-grade titanium captive rigging · aluminium-alloy hoisting, integrates in LS310 hangs
- Max per array
- Shares the LS-series 16-element hang limit
Physical
Measurement conditions
- Maximum SPL is the peak level at 1 m, driven with pink noise at crest factor 4 to the clipping point of the recommended amplifier, with the SSOUNDS system preset applied. Full-range enclosures are specified under free-field conditions; figures marked half-space are specified over a reflecting plane, the condition subwoofers are deployed in, which adds approximately 6 dB.
- Frequency response is specified on axis at 1 m in a free field. The tolerance the figure is referenced to is stated alongside it; where no tolerance is given, the figure is the −6 dB bandwidth.
- Sensitivity is specified at 1 W into the nominal impedance at 1 m on axis, averaged across the pass band of the enclosure.
- Recommended amplifier power is the amplifier output SSOUNDS specifies for this enclosure, driven with the SSOUNDS system preset. It guides amplifier selection and is not an AES power-handling rating for the transducers.
- Nominal impedance is the manufacturer's rating for amplifier load calculation; minimum impedance across the operating band may be lower.
- Net weight excludes packaging, flight case, accessories and optional rigging hardware.
- Dimensions are stated in millimetres and exclude protruding rigging hardware, handles and connector panels unless noted.
- All figures are typical values for production units specified under the conditions above. Individual units may vary within published tolerances.
Directivity
Directivity computed by the SSOUNDS system prediction engine from this product's driver complement, the same dataset the printed data sheet uses. 1/24-octave band-power resolution; values are dB relative to on-axis.
System operation
Recommended: SSOUNDS D24X, one channel per LS310 Sub (4 Ω) with the LS310 Sub preset loaded.
Downloads
Product documentation, free to open. No registration, no form. The data sheet is a PDF rendered from the page below it; the manual is a print page, so use your browser to print it or save it as PDF.
- Technical data sheetFull specification set with the measurement conditions for each figure, modelled response curves, safety notices and warranty terms.PDF · SS-DS-LS310-SUB-EN-A4 · Rev. 2608 · Issued 15 Aug 2026
- Technical data sheet, in your browserThe same document as a page, if you would rather read it here or print it yourself.HTML print view · SS-DS-LS310-SUB-EN-A4 · Rev. 2608 · Issued 15 Aug 2026
- Architectural and engineering specificationThe “shall be” paragraph for tender documents and bills of quantities, written from this product’s own specification rows. Section of the data sheet.HTML section · SS-DS-LS310-SUB-EN-A4
- User manualUnpacking, connection, installation, operating limits, maintenance schedule and troubleshooting for this model.HTML print view · SS-UM-LS310-SUB-EN-A4 · Rev. 2608 · Issued 15 Aug 2026
- Directivity table, horizontal axisPolar data in dB relative to on axis, in the layout a measurement rig exports, for prediction and modelling. Computed by the SSOUNDS prediction engine, not measured in an anechoic chamber.CSV download
- Directivity table, vertical axisPolar data in dB relative to on axis, in the layout a measurement rig exports, for prediction and modelling. Computed by the SSOUNDS prediction engine, not measured in an anechoic chamber.CSV download
Loudspeaker data files for prediction software (GLL and CLF for EASE), 2D and 3D drawings and certification documents are issued on request. Email support@s-soundspro.com and we will send the current release for this model.
Amplification
System amplifier named in this product's specifications.
