Hybrid LB218 MKIII 18″ Dual Passive Subwoofer

The Hybrid LB218 MKIII is a powerful dual 18-inch passive subwoofer designed for high-output PA systems, rental companies, DJs, outdoor events, large venues, and concert-level sound reinforcement. As the MKIII revision, it features improved drivers, stronger cabinet bracing, and enhanced low-frequency performance, delivering deep, impactful bass with exceptional reliability.

With two high-efficiency 18-inch woofers housed in a reinforced wooden enclosure, the LB218 MKIII delivers authoritative sub-bass suitable for pairing with Hybrid line arrays, PLB tops, and other high-performance passive speakers.

Key Features

• MKIII upgraded design for improved output and durability

• Dual 18-inch low-frequency drivers

• High SPL capability with strong bass extension

• Heavy-duty front-ported cabinet for maximum efficiency

• Reinforced wooden enclosure with internal bracing

• Rugged steel grille

• Speakon NL4 input/output connectors

• Ideal for concerts, outdoor events, clubs, churches, festivals, and rental fleets

Technical Specifications

Driver Configuration: 2 × 18″ LF
Power Handling (RMS): approx. 800–1000 W
Program Power: approx. 1600–2000 W
Peak Power: approx. 3200–4000 W
Nominal Impedance: 4 or 8 ohm (batch dependent)
Frequency Response: approx. 35 Hz – 200 Hz
Sensitivity: approx. 97–100 dB (1W/1m)
Inputs/Outputs: Speakon NL4
Cabinet Material: Reinforced wood, MKIII structure
Grille: Powder-coated steel
Porting: Dual front port