RCF SUB 8004-AS 2500W 18″ High-Power Active Subwoofer – Black

RCF SUB 8004-AS 18-inch active subwoofer

The RCF SUB 8004-AS is a powerful and compact active subwoofer engineered for professional audio environments requiring deep and controlled low-frequency performance. Featuring a high-power 18-inch woofer with a 4.0-inch inside/outside voice coil, it is designed to deliver strong, articulate bass with excellent efficiency. With a maximum sound pressure level of 136 dB, this subwoofer is suitable for live sound, touring, and installed sound systems.

Powered by a 2500W peak (1250W RMS) Class-D amplifier, the SUB 8004-AS ensures high efficiency and consistent output with fast transient response. The amplifier is built with a solid aluminum structure that enhances durability and supports effective convection cooling without the need for fans, ensuring reliable operation in demanding conditions.

The integrated DSP-controlled input section provides flexible system tuning options, including selectable presets, delay control, crossover adjustment, and phase switching. Additional controls such as deep/punch mode and cardioid configuration allow users to tailor the bass response to different applications and environments, improving system performance and sound clarity.

The cabinet is constructed from Baltic birch plywood with a rugged textured finish, ensuring long-term durability for touring use. It features ergonomic side handles for easy transport and a steel grille with protective backing to safeguard internal components. The design supports stacking configurations and is compatible with systems such as NXL23-A, NXL24-A, HDL 10-A, and HDL 20-A for flexible deployment.

The SUB 8004-AS combines powerful output, advanced processing, and reliable construction, making it an ideal solution for professionals seeking high-performance low-frequency reinforcement in a compact format.

Features of SUB 8004-AS

• 136 dB maximum SPL output
• 2500W peak, 1250W RMS Class-D amplifier
• 18-inch high-power vented woofer
• 4.0-inch inside/outside voice coil
• DSP-controlled input with selectable presets
• Adjustable delay and crossover control
• Phase switch and cardioid configuration
• Deep/Punch mode for tonal flexibility
• Baltic birch plywood cabinet construction
• Fan-less convection cooling system
• Steel grille with protective backing
• Compatible with NXL23-A and NXL24-A systems
• Supports HDL 10-A and HDL 20-A configurations
• Ergonomic side handles for transport
• Stackable design for touring applications

Specifications of SUB 8004-AS