L-Acoustics SB28 subwoofer in fair condition. Fully operational, with normal signs of use from professional staging. Regularly maintained. Year of manufacture: 2017

Included

• Protective cover
• Wheel board / caster set

Logistics

• Collection preferred
• Shipping available at buyer’s expense

Ideal solution for reinforcing an existing subwoofer section or expanding an L-Acoustics inventory for high-power live applications.

Description

L-Acoustics SB28 subwoofer, a professional dual 18” subwoofer designed for medium to large-scale live applications.

A well-established industry reference, known for its power, impact, and ability to deliver deep, controlled low frequencies.
Used in both indoor and outdoor staging environments.

Technical Specifications

• Bass-reflex subwoofer
• 2 × 18” long-excursion drivers
• Typical frequency range: 25 Hz – 100 Hz (depending on preset)
• Very high SPL capability suitable for large audiences
• Cardioid configuration possible
• Recommended amplification: LA8 / LA12X
• Dedicated presets via L-Acoustics controllers
• Connectors: SpeakON
• Reinforced plywood construction for touring use
• Suitable for ground stacking or flown configurations

Key Advantages in Operation

• Deep low-frequency response with strong dynamic headroom
• Excellent low-frequency projection
• Ideal for concerts, festivals, and large stages
• Optimal integration with K1, K2, KARA, ARCS
• Widely used standard in professional rental inventories