SSOUNDS · SS-LC70B
SSOUNDS LC70B
4 × 5.5″ bass column for the LC70, 106 Hz to 1.2 kHz, in the same column footprint.
A column system that has to carry music loses weight in the low mid band, and a conventional cabinet beside it breaks the line the architect asked for. The LC70B is the bass column for the LC70: four 5.5″ cone drivers covering 106 Hz to 1.2 kHz in a 190 mm wide cabinet with the same 100 dB sensitivity as the column it supports. Mounted with the LC70, it adds low mid weight for music in houses of worship, auditoria and conference halls without changing the visual footprint.
Part of the LC System
Four 5.5″ drivers, the bass column for the LC70 in the same column footprint.
LC stands for Line Column. Drivers stacked in a vertical line that radiates as one line source, so the vertical pattern is set by the length of the column: energy lands on the listeners and stays off the reverberant ceilings and walls around them. The outdoor W models carry the same principle in IP66 die-cast aluminium, and the D models carry their own amplifier and take Dante audio and PoE power on one network cable.
Key features
- 4 × 5.5″ cone drivers
- 106 Hz to 1.2 kHz (−10 dB)
- 100 dB sensitivity, matched to the LC70
- 125 dB continuous at 1 m
- 400 W AES, 1,600 W peak, 8 Ω
- Same 190 mm width as the LC70, 2 × NL4 speakON, 18 kg
Specifications
Engineering data. The conditions each figure is specified under are stated below the table.
General
- Type
- Passive bass column array
Components
- Drivers
- 4 × 5.5″ cone drivers
Acoustic
Connections
- Connectors
- 2 × NL4 speakON
Rigging
- Mounting
- Wall bracket · ceiling suspension
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.
- Coverage angles are nominal −6 dB values averaged across the pass band. Per-octave directivity data is available from SSOUNDS system design support for prediction and modelling.
- Power handling is rated to AES2 using pink noise with a 6 dB crest factor over a two-hour period. Programme power is twice the AES rating; peak power is four times.
- 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.
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-LC70B-EN-A4 · Rev. 2610 · Issued 08 Oct 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-LC70B-EN-A4 · Rev. 2610 · Issued 08 Oct 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-LC70B-EN-A4
- User manualUnpacking, connection, installation, operating limits, maintenance schedule and troubleshooting for this model.HTML print view · SS-UM-LC70B-EN-A4 · Rev. 2610 · Issued 08 Oct 2026
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.
More from the LC series
SSOUNDS
SSOUNDS LC4.3
4 × 3″ full-range column for short-throw speech in small reverberant rooms, 100° × 30° from a 375 mm cabinet.
SSOUNDS
SSOUNDS LC8.3
8 × 3″ full-range column for speech in halls, offices and long atria, 100° × 18°.
SSOUNDS
SSOUNDS LC16.3
16 × 3″ full-range column, 127° × 24°, for announcements and speech in airports, stations and mosques.
SSOUNDS
SSOUNDS LC8.4H
Two-way 8 × 4.5″ plus 8 × 1″ column, 640 W AES, 128° × 27°, for conference halls, auditoria and worship.
SSOUNDS
SSOUNDS LC70
Two-way column with 16 × 1″ high-frequency drivers over 4 × 5.5″, 131 dB peak, pairs with the LC70B bass column.
SSOUNDS
SSOUNDS LC100
The largest LC column: 24 × 1″ over 6 × 6.5″, 65 Hz to 16 kHz, 134 dB peak, pairs with the LC100B.