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HD221S Dual 21-Inch Touring Subwoofer
High-Output Dual 21" Subwoofer for Large-Scale Professional PA Systems
The ACLON HD221S is a high-output dual 21-inch touring subwoofer designed for large-scale professional PA systems, touring sound reinforcement and demanding live event applications. Equipped with two 21-inch ferrite low-frequency drivers with 125 mm voice coils, the HD221S is engineered to deliver powerful low-frequency output, high acoustic impact and reliable performance in professional sound systems.
With 3600W RMS power, 7200W peak power and up to 149 dB maximum SPL, the HD221S provides substantial low-frequency headroom for large venues and high-output sound reinforcement applications. Its 30 Hz–250 Hz frequency response delivers deep and powerful bass reproduction, while the 160 Hz crossover point allows flexible integration with professional line array and point-source loudspeaker systems.
The large-format dual 21-inch configuration makes the HD221S suitable for applications where very high low-frequency output is required. Its professional enclosure is designed for demanding touring, rental and large-scale event environments.
Key Features
2 × 21-inch ferrite LF drivers with φ125 mm voice coils
3600W RMS / 7200W peak power for high-output professional PA systems
Up to 149 dB maximum SPL for large-scale sound reinforcement
30 Hz–250 Hz frequency response for deep and powerful low-frequency reproduction
160 Hz crossover point for flexible system integration
4 Ω input impedance for professional amplifier matching
Large-format dual 21-inch configuration for high-output bass reinforcement
Rugged professional cabinet design for touring and large-scale event applications
Parameter HD221S LF Woofer Unit 2 × 21" Ferrite, φ125 mm RMS Power 3600 W Peak Power 7200 W Max. Peak SPL 149 dB Frequency Response (±3 dB) 30 Hz–250 Hz Crossover Point 160 Hz Input Impedance 4 Ω Dimensions (W × H × D) 1250 × 990 × 675 mm Net Weight 139 kg
Typical Applications
The HD221S is suitable for:
Large-scale touring PA systems
Concerts and music festivals
Outdoor live event
Large-format sound reinforcement
Professional PA rental fleets
Road shows and event production
Stadium and large venue sound systems
Churches and large worship venues
Theaters and performance venues
Professional line array and PA system projects
Technical Specifications
Professional Audio OEM/ODM Support
ACLON provides professional audio OEM/ODM manufacturing for subwoofers, loudspeakers and complete professional PA system products. The HD221S can be supplied as part of touring systems, rental fleets and large-scale sound reinforcement projects for professional audio brands, distributors, rental companies and system integrators.
Depending on project requirements and production quantities, customization can include cabinet finish, grille, logo, model designation, packaging and other product details.
The HD221S can be integrated with professional line array systems, high-output PA systems and large-format sound reinforcement configurations, providing a powerful dual 21-inch low-frequency solution for demanding professional audio applications.
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Key Features
2 × 21-inch ferrite LF drivers with φ125 mm voice coils
3600W RMS / 7200W peak power for high-output professional PA systems
Up to 149 dB maximum SPL for large-scale sound reinforcement
30 Hz–250 Hz frequency response for deep and powerful low-frequency reproduction
160 Hz crossover point for flexible system integration
4 Ω input impedance for professional amplifier matching
Large-format dual 21-inch configuration for high-output bass reinforcement
Rugged professional cabinet design for touring and large-scale event applications
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Typical Applications
The HD221S is suitable for:
Large-scale touring PA systems
Concerts and music festivals
Outdoor live event
Large-format sound reinforcement
Professional PA rental fleets
Road shows and event production
Stadium and large venue sound systems
Churches and large worship venues
Theaters and performance venues
Professional line array and PA system projects
Technical Specifications
Related Tags : Dual 21 Inch Subwoofer 21 Inch Touring Subwoofer high-Output Professional PA Subwoofer
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HD221S Dual 21 Inch Touring Subwoofer | 3600W Professional PA Subwoofer HD221S Dual 21-Inch Touring Subwoofer High-Output Dual 21" Subwoofer for Large-Scale Professional PA Systems The ACLON HD221S is a high-output dual 21-inch touring subwoofer designed for large-scale professional PA systems, touring sound reinforcement and demanding live event applications. Equipped with two 21-inch ferrite low-frequency drivers with 125 mm voice coils, the HD221S is engineered to deliver powerful low-frequency output, high acoustic impact and reliable performance in professional sound systems. With 3600W RMS power, 7200W peak power and up to 149 dB maximum SPL, the HD221S provides substantial low-frequency headroom for large venues and high-output sound reinforcement applications. Its 30 Hz–250 Hz frequency response delivers deep and powerful bass reproduction, while the 160 Hz crossover point allows flexible integration with professional line array and point-source loudspeaker systems. The large-format dual 21-inch configuration makes the HD221S suitable for applications where very high low-frequency output is required. Its professional enclosure is designed for demanding touring, rental and large-scale event environments.
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