AD FLEX-918A Professional Active 18" Subwoofer

Deep Bass. Powerful Performance. Built for Professionals.

The AD FLEX-918A is a high-performance 18-inch active powered subwoofer engineered to deliver powerful, deep, and accurate low-frequency reproduction for professional sound reinforcement. Designed for concerts, churches, touring systems, DJs, hotels, and live events, the FLEX-918A combines a high-output transducer with advanced DSP technology and a powerful Class D amplifier to produce outstanding bass performance in any venue.

Powered by a 2800W Peak Class D amplifier, the FLEX-918A delivers exceptional efficiency, fast transient response, and reliable performance while maintaining low distortion. Its premium 18-inch woofer with a 4-inch voice coil produces tight, punchy bass with impressive low-frequency extension, reaching a maximum SPL of 134dB.

The integrated Digital Signal Processor (DSP) features six selectable presets, allowing users to optimize the subwoofer for different applications and speaker configurations. With stereo XLR inputs and stereo XLR outputs, the FLEX-918A easily integrates into professional PA systems and can be expanded for larger sound setups.

Built with a rugged wooden enclosure and engineered for demanding professional use, the AD FLEX-918A provides reliable performance night after night.

Key Features

Powerful Class D Amplifier

High-efficiency 2800W Peak Class D amplifier delivers powerful, clean bass with excellent reliability and low heat generation.

Premium 18-Inch Woofer

Heavy-duty 18-inch low-frequency driver with a 4-inch voice coil provides deep, accurate bass and outstanding durability.

Innovative DSP Processing

Built-in DSP optimizes system performance, protects the loudspeaker, and delivers consistent sound quality in any application.

Six DSP Presets

Choose from six factory presets to match different speaker systems, room sizes, and performance requirements.

High Sound Pressure Level

Produces up to 134dB maximum SPL, delivering powerful low-frequency performance for medium to large venues.

Professional Connectivity

Features stereo XLR inputs and stereo XLR outputs for simple integration into professional audio systems.

Rugged Touring Construction

Durable wooden cabinet built to withstand the demands of rental companies, touring professionals, and permanent installations.

Technical Specifications

• Model: AD FLEX-918A
• System Type: Active 18" Powered Subwoofer
• Woofer: 18-inch with 4-inch Voice Coil
• Amplifier: Class D
• Peak Power: 2800W
• Maximum SPL: 134dB
• DSP: Advanced Digital Signal Processor
• DSP Presets: 6 Factory Presets
• Inputs: Stereo XLR
• Outputs: Stereo XLR

Ideal Applications

• Live Concerts
• Churches & Houses of Worship
• DJ Performances
• Hotels & Ballrooms
• Corporate Events
• Touring Sound Systems
• Rental Companies
• Clubs & Bars
• Outdoor Events
• Professional PA Systems

The AD FLEX-918A delivers the deep, powerful bass that modern professional audio systems demand. Combining a high-output 18-inch driver, advanced DSP processing, and a 2800W Class D amplifier, it is an excellent choice for professionals seeking reliable performance and outstanding low-frequency impact.

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