Turbosound TQ15B - 3200W 15-inch Passive Reflex Loaded Subwoofer in Black Finish

The Turbosound TQ15B is a powerful and versatile 15-inch passive reflex-loaded subwoofer designed for a broad range of speech and music sound reinforcement applications. With a peak power handling of 3,200 watts and a continuous rating of 800 watts, the TQ15B is perfectly suited for both portable and fixed installations, including touring audio systems, FOH (front-of-house) applications, and as part of large sound reinforcement setups. Its exceptional performance in reproducing low-frequency content makes it an ideal complement for the Turbosound TQ series, extending the system's capabilities for full-range applications.

The TQ15B features a high-performance 15" neodymium low-frequency driver designed specifically to deliver exceptional low-frequency extension and accurate transient response. This driver is paired with Turbosound's advanced Diverging Lens Port (DLP) design, a low-distortion bandpass port that maximizes sound pressure levels while minimizing unwanted resonances. The DLP design ensures that the subwoofer produces deep, controlled bass with minimal distortion, making it ideal for both program material and live music reinforcement. The enclosure is optimized for extended low-frequency impact, providing powerful bass that is capable of filling large venues without sacrificing clarity or precision.

One of the standout features of the TQ15B is its cardioid-arrayable design, which allows for superior rear rejection and improved pattern control. This is particularly useful in applications where sound leakage or unwanted reflections from the rear of the subwoofer need to be minimized. The TQ15B's flexibility is further enhanced by its electronic delay steering, which allows the subwoofer to be configured for multiple deployment scenarios, including traditional forward-facing, cardioid, or reverse end-fire configurations. This adaptability makes the TQ15B an excellent choice for complex sound systems where precise low-frequency control is essential.

The cabinet is constructed from a combination of 15 mm (5/8") and 18 mm (3/4") plywood, providing a durable yet lightweight enclosure that can withstand the rigors of touring while maintaining high acoustic performance. The subwoofer is finished in a semi-matte black PU paint, offering both a sleek appearance and added durability. The front grille is made from rugged powder-coated perforated steel wrapped in cloth for additional protection while maintaining a professional aesthetic. Additionally, the TQ15B is IP44-rated, meaning it is resistant to dust and water ingress, making it suitable for outdoor events and harsh environments.

The TQ15B includes a versatile four-point rigging system, allowing for easy suspension or ground stacking in a variety of configurations. For added flexibility, the subwoofer features dual M20 (3/4" / 20 mm thread) pole mount sockets, enabling the integration of satellite speakers in vertical or horizontal arrays. The rear panel is equipped with three Neutrik speakON NL4 connectors for input, link connections to additional enclosures, and a dedicated connection for rear-firing cardioid operation. This allows for a tidy and efficient setup, especially when multiple subwoofers are being used in a complex arrangement.

In terms of performance, the TQ15B offers a frequency response from 43 Hz to 120 Hz (+3 dB), with an extended low-frequency response down to 37 Hz (-10 dB). With a sensitivity of 98 dB (1 W @ 1 m) and a maximum SPL of 138 dB peak, the TQ15B delivers powerful, punchy bass at high output levels while maintaining clarity and definition across the entire frequency range. The impedance is 8 ohms, making it compatible with a variety of professional audio systems.

The TQ15B integrates seamlessly with Lab Gruppen amplification and Lake DSP systems, ensuring maximum system performance and consistency. The inclusion of pre-configured presets allows users to easily achieve optimal sound quality with minimal setup. For further fine-tuning, the TQ15B is supported by EASE GLL files for the EASE Focus 3 Acoustics Simulation Software, providing accurate calculations of acoustic coverage and suspension pick points for precise system alignment and aiming.

Features

• Continuous power handling: 800 W, peak power: 3,200 W
• 15" neodymium low-frequency transducer for deep, powerful bass
• Low-distortion DLP (Diverging Lens Port) design for maximum sound pressure level
• Cardioid-arrayable with electronic delay steering for superior rear rejection
• Frequency response: 43 Hz - 120 Hz (+3 dB), 37 Hz - 200 Hz (-10 dB)
• Maximum SPL: 138 dB peak for high output levels
• Dual M20 pole mount sockets for satellite speaker configurations
• Neutrik speakON NL4 connectors for reliable connections
• IP44 dust and water ingress protection for outdoor and harsh environments
• Dimensions (H x W x D): 20.66 x 26.18 x 22.04 inches, Net weight: 81.8 lbs
• Flying hardware: M10 x 16 points for suspension flexibility
• Optional accessories: wheels (Manchester wheel kit), bag (TQ15B-WPC)

Specifications

System

• Frequency Response (+3 dB): 43 Hz - 120 Hz
• Frequency Response (-10 dB): 37 Hz - 200 Hz
• Nominal Dispersion: Omni
• Power Handling (IEC): 800 W continuous
• Sensitivity: 98 dB (1 W @ 1 m)
• Maximum SPL: 138 dB peak
• Impedance: 8 Ω
• Components: 1 x 15" (380 mm) Neo LF driver

Enclosure

• Connectors: 3 x Neutrik speakON NL4
• Wiring: Pins 1+ / 1- input, pins 2+ / 2- link, front pins 2+ / 2-
• Dimensions (H x W x D): 20.66 x 26.18 x 22.04 inches
• Net Weight: 81.8 lbs
• Construction: 15 mm and 18 mm (5/8" and 3/4") plywood
• Finish: PU Semi-matt black paint
• Grille: Powder-coated perforated steel, cloth wrapped
• Flying Hardware: M10 x 16 Points
• IP Rating: IP44
• UV Rating: 4-5 (ASTM G155-13)

Accessories (optional)

• Bag: TQ15B-WPC
• Wheels: Manchester wheel kit