RCF SUB 705AS MK3 | 15in, 1400W Peak, 131 dB | Por...
$1,149.00
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.
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.
| Brand | RCF |
| Name | RCF SUB 705AS MK3 |
| Primary Category | Powered PA Subwoofer |
| Build Material | Baltic birch plywood with scratch-resistant polyurea coating |
| Dimensions | 23.54 x 16.54 x 23.23 in inch |
| Included Accessories | AC Power Cable |
| Mounting Options | M20 threaded pole mount |
| Weight | 66.14 lb lb |
| CE Certified | Yes |
| Warranty Length | Not specified years |
| Connectivity Protocols | Stereo XLR inputs and outputs |
| Frequency Response | 40Hz - 120Hz Hz |
| Lumen Output | 131 dB dB |
| Power Rating | 1400W Peak / 700W RMS W |
| Wattage | 1400 W |
| Control Interfaces | Rear-panel volume, EQ, phase polarity, and crossover controls |
| Onboard DSP | Bass Motion Control (BMC) technology and electronic equalization |
| Driver Configuration | Single 15-Inch Active Subwoofer |
| Woofer Size | 15 inch inch |
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