AD FLEX-405A Active Line Array System with FLEX-405SA Active Subwoofer

Compact Touring Line Array. Powerful Performance. Exceptional Coverage.

The AD FLEX-405A Active Line Array System is a professional touring solution designed to deliver outstanding vocal clarity, powerful output, and consistent sound coverage for concerts, churches, theaters, auditoriums, convention halls, and large live productions.

The system combines the AD FLEX-405A active line array module with the AD FLEX-405SA active 15-inch subwoofer, creating a complete full-range sound reinforcement system capable of producing exceptional detail, high SPL, and deep, impactful bass.

The FLEX-405A utilizes four premium 5-inch Neodymium woofers and dual 1.75-inch Neodymium compression drivers, powered by a high-efficiency UCD Class-D bi-amplifier with advanced 56-bit DSP and FIR filtering technology. This combination delivers precise phase alignment, transparent sound reproduction, excellent vocal intelligibility, and smooth coverage throughout the venue.

Complementing the line array is the AD FLEX-405SA, a high-performance 15-inch powered subwoofer engineered to extend the system's low-frequency response with tight, punchy, and powerful bass. Featuring a 1000W RMS (2000W Program) Class-D amplifier, long-excursion 15-inch transducer, and advanced DSP processing, the FLEX-405SA provides outstanding low-frequency impact while maintaining excellent control and musical accuracy.

Designed for demanding professional environments, both enclosures feature premium birch plywood construction with durable polyurea coating, integrated heavy-duty rigging hardware, and IP45-rated weather-resistant protection, making the system equally suitable for touring productions and permanent installations.

Key Features

Complete Touring Line Array System

Professional full-range system consisting of the AD FLEX-405A active line array and AD FLEX-405SA powered subwoofer for exceptional clarity and powerful low-frequency performance.

High-Efficiency UCD Class-D Amplification

Bi-amplified Class-D technology delivers excellent efficiency, high headroom, and crystal-clear audio even at demanding output levels.

Premium Neodymium Drivers

The FLEX-405A features:

• 4 × 5-inch Neodymium LF Drivers
• 2 × 1.75-inch Neodymium HF Compression Drivers

for lightweight construction, superior sensitivity, and outstanding vocal reproduction.

High-Power FLEX-405SA Active Subwoofer

The dedicated powered subwoofer features:

• 15-inch Long-Excursion Woofer
• 1000W RMS Output
• 2000W Program Power
• Deep, powerful bass response
• Designed specifically to integrate with the FLEX-405A array system

Advanced 56-bit DSP Processing

Professional DSP with multiple presets for:

• Short Throw
• Mid Throw
• Long Throw
• User Presets

allowing quick optimization for every venue.

Exclusive FIR Filtering Technology

Built-in FIR processing provides:

• Smooth frequency response
• Superior phase coherence
• Accurate stereo imaging
• Ultra-low latency
• Consistent coverage throughout the audience

Flexible Array Configuration

Supports multiple deployment options including:

• Pole Mount
• Ground Stack
• Suspended Arrays
• Wall Installation
• Touring Fly Systems

with adjustable array angles for precise sound coverage.

Touring-Grade Construction

Premium birch plywood cabinets finished with rugged polyurea coating for excellent durability, scratch resistance, and long service life.

Weather-Resistant Design

IP45-rated protection helps safeguard the system against dust and moisture for dependable indoor and outdoor operation.

Professional Rigging System

Integrated heavy-duty flying hardware supports arrays of up to:

• 12 AD FLEX-405A Line Array Modules
• 6 AD FLEX-405SA Powered Subwoofers

Technical Highlights

AD FLEX-405A

• 4 × 5" Neodymium Woofers
• 2 × 1.75" Neodymium Compression Drivers
• Frequency Response: 70Hz – 20kHz
• RMS Power: 600W
• Program Power: 1200W
• Maximum SPL: 129 dB
• Dispersion: 120° × 10°
• Integrated FIR DSP
• Balanced XLR Input & Output
• IP45 Weather Resistant

AD FLEX-405SA

• 15" Long-Excursion Woofer
• Frequency Response: 35Hz – 150Hz
• RMS Power: 1000W
• Program Power: 2000W
• Maximum SPL: 131 dB
• High-Efficiency Class-D Amplifier
• Advanced DSP Processing
• Balanced XLR Input & Output
• Pole Mount Socket
• Touring-Grade Birch Plywood Cabinet

Why Choose the AD FLEX-405 Series?

The AD FLEX-405A Line Array and FLEX-405SA Powered Subwoofer work together to create a complete professional sound reinforcement system capable of delivering crystal-clear vocals, smooth midrange, extended high frequencies, and deep, controlled bass. Designed for rental companies, production houses, churches, theaters, convention centers, and touring professionals, the FLEX-405 Series combines premium components, advanced DSP technology, rugged construction, and flexible deployment to meet the demands of today's professional audio industry.

This version is stronger for marketing because it sells the entire FLEX-405 system rather than just the top cabinet, making it more attractive to customers looking for a complete line array solution.

Tags: AD FLEX-405A, AD FLEX-405SA, Active Line Array, Powered Line Array, Touring Speaker, Active Subwoofer, Professional PA System, Concert Audio, Church Audio, Theater Sound System, Live Sound, Rental Audio, FIR DSP Speaker, Neodymium Speaker, High SPL Speaker, Professional Audio, Event Sound System, Stage Speaker, Line Array System, Outdoor Sound System