The SB18 is the universal subwoofer designed for modular WST® line sources and coaxial systems, lowering the combined system operating range down to 32 Hz. Its compact size and integrated rigging make it extremely well suited for flown coupled configurations with KARA®.

The association of a specifically designed 18’’ transducer with a dual bass-reflex tuned enclosure provides exceptional impact and high sensitivity, low thermal compression and reduced distortion. The vents feature a progressive profile allowing laminar airflow and reduced turbulence noise even at the very highest operating levels. These combined properties contribute to the sonic qualities of the SB18 in terms of precision and musicality.

The control and amplification of the SB18 is managed by either the LA4 or LA8 (LA-RAK) platform. The onboard DSP filtering encompasses advanced crossover functions, system EQ, and dual thermal and over-excursion protection of the transducer. The L-ACOUSTICS® amplified controllers offer the following drive modes:

• The ‘‘standard’’ mode using SB18 as a companion to KUDO, KARA®, KIVA-KILO, ARCS® and featuring a low-pass filter at 60 Hz ([SB18_60] preset) or closely coupled to KARA®, ARCS® and XT with a low-pass filter at 100 Hz ([SB18_100] preset)
• The ‘‘cardioid’’ mode using SB18 as a companion to KUDO, KARA®, KIVA-KILO, ARCS® and featuring a low-pass filter at 60 Hz ([SB18_60_C] preset) or closely coupled to KARA®, ARCS® and XT with a low-pass filter at 100 Hz ([SB18_100_C] preset).

The performance of the SB18 enclosure depends upon the choice of preset and physical system configuration. Made of high grade Baltic birch plywood, the cabinet also features a pole mount socket for use with one XT or two KIVA enclosures.

• 32 Hz ([SB18_100] preset)

• 136 dB ([SB18_100] preset)

• 700 W

• LF: 1 x 18’’ weather-resistant, (4’’ coil, aluminium die-cast basket, vented magnet design)
• Nominal impedance: 8 ohms

• Steel, certified for: 16 SB18

• W x H/h x D: 750 x 540 x 707 mm - 29.5 x 21.3 x 27.8 in
• Weight (net): 52 kg 114.5 lbs
• Connectors: 2 x 4-point Speakon®
• Material: baltic birch plywood
• Finish: Grey-brown, RAL 8019®
• Front: polyester powder-coated steel grill, Airnet® acoustically neutral fabric
• Rigging: pole-mount socket, integrated rigging for flying, stacking runners (steel with dual coating zinc and polyester powder)

• Compact subwoofer, LF limit 32 Hz

• Reference subwoofer, LF limit 25 Hz

• Amplified controllers with DSP library and networking capabilities
• Touring rack
• Remote control software

• Rigging structure and extension bar for suspending or stacking KARA and/or SB18
• Certified for suspending up to 24 KARA or 16 SB18 or stacking up to 9 KARA

• Mini rigging structure for flying/stacking KARA. Extension for SB18/KARA or SB18
• Certified for 6 KARA and for 2 SB18/6KARA or 4 SB18 with extension

• Tilt adjustment screw jacks for stacked M-BUMP
• KARA angle bar extension

• 3D electro-acoustic and mechanical simulation software dedicated to L-ACOUSTICS products