The Celto Acoustique CSW221 is a flagship dual 21-inch vented subwoofer engineered for extreme low-frequency performance in touring and large-scale sound reinforcement. Built with premium Celto 21″ transducers, each featuring a massive voice coil and high excursion capability, the CSW221 delivers unparalleled bass power and depth. With over 3000W RMS handling and output exceeding 145 dB peak SPL, it is designed for stadiums, festivals, arenas, and top-tier touring systems where maximum low-end impact is required.
Key Features
- Passive subwoofer (requires external amplifier)
- Dual 21″ high-excursion transducers with oversized voice coils
- Extremely high power handling for large-scale applications
- Frequency extension down to ~28 Hz
- Multi-purpose vented cabinet design for optimized airflow and reduced distortion
- Rugged birch plywood construction with protective coating
- Powder-coated steel grille with acoustic foam backing
- Designed for touring, festivals, stadiums, and arenas
Specifications
- Frequency Range (–10 dB): ~28 Hz – 200 Hz
- Power Handling: 3000 W RMS / 6000 W program / 12000 W peak
- Nominal Impedance: 4 ohms
- Sensitivity: ~100 dB (1 W / 1 m)
- Maximum SPL (Calculated): ~139 dB RMS / 145 dB peak
- Connections: 2 × Neutrik NL4 Speakon connectors
- Enclosure: Vented birch plywood cabinet, black textured paint
- Grille: Heavy-duty powder-coated steel with acoustic foam backing
- Finish: Black
