QSC 218 Speaker Dual 18-Inch High-Output Passive Subwoofer

QSC 218 Speaker Dual 18-Inch High-Output Passive Subwoofer

The QSC 218 Speaker is a high-power dual 18-inch passive subwoofer designed for large-scale professional live sound reinforcement. It is built to deliver extremely deep, powerful, and controlled low-frequency performance, making it ideal for concerts, festivals, outdoor events, major clubs, and touring sound systems that demand maximum bass impact and coverage.

At the core of the QSC 218 Speaker are two high-output 18-inch woofers housed in a precision-tuned bass reflex enclosure. This dual-driver configuration significantly increases low-frequency sound pressure levels (SPL), producing tight, impactful bass that remains controlled even at high volumes. The design ensures extended low-end response while maintaining clarity and punch across the bass spectrum.

The QSC 218 Speaker is engineered for use with high-power external amplifiers and active DSP crossovers, allowing sound engineers to optimize performance for different venues and system configurations. Its heavy-duty cabinet construction is designed to withstand the demands of touring and continuous professional use, making it suitable for both portable and fixed installations in demanding audio environments.

Key Features

• Dual 18-inch passive subwoofer design
• High-output QSC low-frequency performance
• Bass reflex tuned enclosure for deep bass
• Extremely high SPL capability
• Compatible with external power amplifiers
• Requires DSP crossover system integration
• Ideal for touring and festival systems

High SPL Bass Speaker