RCF SUB 705AS MK3 | 15in, 1400W Peak, 131 dB | Portable Active Subwoofer for Live Sound & DJ

15-Inch Powered PA Subwoofer

The RCF SUB 705AS MK3 is a high-performance 15-inch powered PA subwoofer designed for DJs, live sound engineers, musicians, and portable sound reinforcement applications. Featuring a 1400W peak Class-D amplifier, a high-power 15-inch woofer with a 3-inch voice coil, and up to 131dB maximum SPL, it delivers powerful low-frequency output with a frequency response of 40Hz to 120Hz. RCF's Bass Motion Control technology, stereo crossover, and adjustable rear-panel controls provide flexible system integration with 10-inch and 12-inch powered PA speakers. Its durable Baltic birch plywood enclosure and scratch-resistant polyurea coating make it suitable for frequent transportation and demanding live sound environments.

RCF SUB 705AS MK3 Competitive Differences

• 1400W Peak Class-D Amplification: Delivers 700W RMS and 1400W peak power for strong low-frequency performance with efficient amplifier operation.
• 131dB Maximum SPL: Produces high sound pressure levels suitable for mobile DJs, live bands, and small to mid-sized event spaces.
• 15-Inch High-Power Woofer: Features a 3-inch voice coil and high-power ceramic magnetic circuit for controlled bass reproduction and reliable performance.
• Bass Motion Control (BMC): Advanced woofer excursion management helps prevent excessive cone movement while preserving low-frequency extension and sound integrity.
• Selectable Stereo Crossover: Provides 80Hz and 110Hz crossover options with stereo XLR inputs and outputs for flexible integration with full-range PA speakers.
• Adjustable Sound Controls: Rear-panel volume, EQ, polarity reversal, and crossover controls allow users to optimize low-frequency performance for different system configurations.
• Durable Plywood Construction: Baltic birch plywood cabinet with scratch-resistant polyurea coating provides structural rigidity and protection against wear during transportation.
• Front-Ported Bass Reflex Design: Front-facing vented ports support efficient bass reproduction and allow placement in recessed spaces.
• M20 Threaded Pole Mount: Integrated threaded mounting point accommodates a compatible speaker pole for creating a compact subwoofer-and-top-speaker setup.

RCF SUB 705AS MK3 Description

The RCF SUB 705AS MK3 delivers powerful low-frequency reinforcement in a portable 15-inch active subwoofer designed for professional sound applications. Its high-performance woofer features a 3-inch voice coil and ceramic magnetic circuit, providing the power handling and controlled excursion needed for demanding bass reproduction. The integrated Class-D amplifier produces 1400W peak and 700W RMS, generating up to 131dB maximum SPL at 1 meter. With a frequency response of 40Hz to 120Hz, the subwoofer adds low-frequency impact to DJ music, live instruments, and full-range PA systems.

RCF's proprietary Bass Motion Control technology improves low-frequency performance by managing woofer excursion through advanced processing. The system analyzes the woofer's dynamic behavior and limits excessive movement while preserving bass response.