Turbosound TQ18B | 18in - 138dB | Reflex Loaded Touring Subwoofer

Turbosound TQ18B  (TurboSound TS-TQ18B)

Passive PA Subwoofer

Turbosound TQ18B is a reflex loaded single 18-inch subwoofer designed for low-frequency extension in touring and installed sound systems. Its high-output design, cardioid configuration support, and durable plywood enclosure make it suitable for scalable professional PA applications.

Turbosound TQ18B Competitive Differences

• Cardioid-arrayable design with front-mounted NL4 connector for rear-firing cardioid operation
• 18-inch neodymium low-frequency transducer with 1000W continuous and 4000W peak power handling
• Designed for seamless integration with Lab Gruppen amplifiers and Lake DSP
• Diverging Lense Port design helps reduce distortion while maximizing output

Turbosound TQ18B Description

The Turbosound TQ18B is built to extend the low-frequency performance of TQ Series systems with powerful, controlled bass response. Its reflex loaded enclosure and optimized tuning provide extended impact while maintaining accurate transient response.

Designed for both touring and installation applications, the TQ18B supports flexible cardioid configurations and electronic delay steering for improved rear rejection and pattern control. This makes it a strong choice for venues, production companies, houses of worship, and installed performance spaces that need high-output bass with better directional control.

The enclosure uses 15 mm and 18 mm plywood with a durable semi-matte black paint finish. Integral feet support secure ground stacking, while dual M20 pole mount sockets allow satellite speaker configurations.

TQ18B Features

• Single 18-inch reflex loaded passive subwoofer
• Cardioid-arrayable design for touring and installation applications
• 1000W continuous and 4000W peak power handling
• 18-inch neodymium low-frequency driver
• Designed for low-frequency extension of TQ Series systems
• Flexible cardioid configurations with electronic delay steering
• Optimized tuning for extended low-frequency impact
• Low-distortion Diverging Lense Port design
• Integral feet for secure ground stacking
• Dual M20 pole mount sockets for satellite speaker setups
• Industry-standard 4-pole twist-lock speaker connector on rear panel
• Front-mounted NL4 connector for rear-firing cardioid operation

TQ18B Specifications

• Speaker Type: Single 18-inch reflex loaded passive subwoofer
• Frequency Response (+/-3 dB): 40 Hz - 120 Hz
• Frequency Response (-10 dB): 32 Hz - 200 Hz
• Nominal Dispersion: Omni
• Power Handling: 1000W Continuous
• Peak Power Handling: 4000W Peak
• Sensitivity: 96.5 dB, 1W @ 1m
• Maximum SPL: 138 dB Peak
• Impedance: 8 ohms
• Components: 1 x 18 in (460 mm) neodymium LF driver
• Enclosure Material: 15 mm and 18 mm plywood
• Finish: Semi-matte black paint
• Connectors: 4-pole twist-lock rear input, front-mounted NL4 connector
• Pole Mount: Dual M20 sockets