RCF USA SUB 705-AS MKIII
(RCF SUB 705-AS v3)
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. Combined with electronic equalization, thermal and RMS protection, and a soft limiter, this processing helps maintain consistent performance at elevated output levels. The efficient Class-D amplifier uses convection cooling, eliminating the need for an internal cooling fan.
Designed for flexible integration with portable PA systems, the SUB 705AS MK3 includes stereo XLR inputs and stereo XLR outputs for connecting external mixers and powered loudspeakers. Selectable 80Hz and 110Hz crossover settings help match the subwoofer with different full-range speakers, particularly 10-inch and 12-inch models. Rear-panel volume, EQ, phase polarity, and crossover controls provide adjustment options for balancing the subwoofer with the rest of the sound system. A selectable output mode allows the XLR outputs to provide either a linked signal or a crossover-filtered signal for connected speakers.
The subwoofer features a robust Baltic birch plywood enclosure with a scratch-resistant black polyurea coating for durability during frequent setup, transportation, and storage. Its front-facing bass reflex ports support efficient low-frequency output and make the cabinet suitable for placement in recessed spaces. A steel protective grille with acoustic fabric backing helps protect the woofer, while integrated side handles provide convenient lifting and positioning. The cabinet also includes an M20 threaded pole mount for supporting a compatible speaker pole and full-range loudspeaker.
Ideal for mobile DJs, live bands, event production companies, and small to mid-sized venues, the SUB 705AS MK3 provides a practical combination of bass output, system flexibility, and rugged construction. It can be used as a single subwoofer for compact PA setups or integrated into larger sound reinforcement systems requiring additional low-frequency support. Its powerful amplifier, advanced processing, and portable cabinet design make it a versatile solution for live music, dance events, presentations, and professional audio applications.
SUB 705AS MK3 Features
- High-power 15-inch active subwoofer for portable and installed PA applications
- 1400W peak Class-D amplifier with 700W RMS output
- Maximum sound pressure level of 131dB at 1 meter
- Frequency response of 40Hz to 120Hz
- 15-inch low-frequency woofer with 3-inch voice coil
- High-power ceramic magnetic circuit for reliable bass performance
- Bass reflex enclosure with front-facing vented ports
- RCF Bass Motion Control (BMC) technology for woofer excursion management
- Electronic equalization for optimized low-frequency reproduction
- Integrated stereo crossover for connection to full-range PA speakers
- Selectable 80Hz and 110Hz crossover frequencies
- Rear-panel volume, EQ, phase polarity, and crossover controls
- Polarity-reversal switch for subwoofer alignment
- Stereo XLR inputs for mixer and audio system connectivity
- Stereo XLR outputs with selectable linked or crossover-filtered signal routing
- Balanced and unbalanced input signal compatibility
- Selectable -2dBu and +4dBu input sensitivity
- Thermal and RMS amplifier protection
- Integrated soft limiter for output protection
- Efficient Class-D amplifier with fanless convection cooling
- Rugged Baltic birch plywood enclosure
- Scratch-resistant black polyurea cabinet coating
- Protective steel grille with acoustic fabric backing
- Integrated side carry handles for convenient transportation
- M20 threaded pole mount for compatible speaker poles
- Front-ported design suitable for placement in recessed spaces
- Ideal low-frequency complement for 10-inch and 12-inch powered PA speakers
- Suitable for mobile DJs, live bands, small to mid-sized venues, and portable sound systems
- Black cabinet finish
SUB 705AS MK3 Specifications
- Brand: RCF
- Model: SUB 705AS MK3
- Product Type: Powered PA Subwoofer
- Speaker Configuration: Single 15-Inch Active Subwoofer
- Enclosure Type: Bass Reflex
- Frequency Response: 40Hz - 120Hz
- Maximum SPL @ 1m: 131dB
- Woofer: 1 x 15 in (381mm)
- Woofer Voice Coil: 3 in (76.2mm)
- Magnet Type: Ceramic
- Amplifier Type: Class-D
- Total Power Output: 1400W Peak / 700W RMS
- Low-Frequency Power Output: 1400W Peak / 700W RMS
- Woofer Excursion Management: Bass Motion Control (BMC)
- Audio Processing: Electronic Equalization
- Crossover Type: Stereo, Selectable
- Crossover Frequencies: 80Hz / 110Hz
- High-Pass Frequency: 110Hz
- Low-Pass Frequency: 80Hz
- Input Signal: Balanced / Unbalanced
- Input Connectors: Stereo XLR (2 Channels)
- Output Connectors: Stereo XLR (2 Channels)
- Output Routing: Linked or Crossover-Filtered
- Input Sensitivity: -2dBu / +4dBu
- Rear-Panel Controls: Volume, EQ, Phase, Crossover
- Polarity Reversal: Yes
- Protection: Thermal, RMS
- Limiter: Soft Limiter
- Amplifier Cooling: Convection, Fanless
- Power Connection: VDE AC Socket
- Cabinet Material: Baltic Birch Plywood
- Cabinet Finish: Scratch-Resistant Polyurea Coating
- Grille: Steel with Acoustic Fabric Backing
- Carry Handles: 2 x Side Handles
- Pole Mount: M20 Threaded Socket
- Port Configuration: Front-Facing Bass Reflex Ports
- Safety Compliance: CE Compliant
- Color: Black
- Dimensions (H x W x D): 23.54 x 16.54 x 23.23 in (598 x 420 x 590mm)
- Weight: 66.14 lb (30 kg)
- Package Dimensions (H x W x D): 25.51 x 25.12 x 18.82 in (648 x 638 x 478mm)
- Package Weight: 76.94 lb (34.9 kg)
What's In The Box
- RCF SUB 705AS MK3 Powered 15-Inch Subwoofer
- AC Power Cable
