RCF SUB 705-AS MK3 - 1400W 15-inch Powered Low Frequency Subwoofer with 3-inch Voice Coil in Black Finish

The RCF SUB 705-AS MK3 is a powerful, high-performance 15" active subwoofer designed for live sound applications. With a state-of-the-art transducer and a high-power ceramic magnetic circuit, it delivers outstanding performance with deep, precise low-frequency control. Equipped with a 1400W Class-D amplifier, the subwoofer achieves an impressive maximum sound pressure level (SPL) of 131 dB, ensuring rich, immersive bass at high levels with minimal distortion. This subwoofer is the perfect complement for 10" or 12" loudspeakers, making it ideal for small to mid-sized venues and portable audio applications.

RCF's advanced Class-D amplifier technology provides ultra-fast attack, realistic transient response, and extremely low heat loss, allowing the speaker to perform at high power levels without the need for a cooling fan. The amplifier's solid mechanical aluminum structure is designed to dissipate heat efficiently while ensuring reliability during transportation. The amplifier is connected to the cabinet via a solid aluminum heat exchanger, with no moving parts, ensuring maximum durability and energy efficiency. The subwoofer's design includes a stereo input circuit with a low distortion crossover, advanced safety limiter, and high-efficiency switch mode power supply section, allowing for exceptional performance and longevity.

One of the standout features of the SUB 705-AS MK3 is its Bass Motion Control (BMC) technology. This innovative feature manages the woofer's excursion to ensure the subwoofer can handle the lowest audible frequencies without compromising stability. The BMC system works by analyzing the dynamic behavior of the woofer and creating a custom algorithm that only limits over-excursions. This technology eliminates the need for a high-pass filter, allowing for better sound integrity and extended low-frequency performance, while maintaining clean, distortion-free bass output.

The cabinet of the SUB 705-AS MK3 is made from Baltic birch plywood, providing a strong and durable construction that is also lightweight for easy transport and setup. The subwoofer is finished with a heavy-duty polyurea coating and a steel grille, making it resistant to wear and tear from the rigors of the road. It is equipped with ergonomic handles with rubber grips for easier handling, and the M20 threaded pole mount at the top allows it to support speakers when used with a pole mount. The subwoofer's frontal vented ports enhance efficiency and allow it to be used in recessed spaces for more flexible installation.

Rear panel controls allow for easy customization of the sound, with options for volume, EQ, phase, and crossover frequency selection. The subwoofer is equipped with stereo XLR input and output connectors, making it easy to integrate into any audio system. With a frequency response range of 40 Hz to 120 Hz and a soft limiter to prevent overdriving, the SUB 705-AS MK3 provides exceptional bass performance with high reliability in demanding live sound environments. Whether used as a stand-alone subwoofer or in combination with other RCF loudspeakers, the SUB 705-AS MK3 delivers powerful, precise low frequencies that enhance any audio system.

Features

• 1400W peak power with 700W RMS, delivering powerful bass output
• 15" woofer with a 3.0" voice coil for deep, controlled low frequencies
• Class-D amplifier with fanless design for quiet, efficient performance
• Bass Motion Control technology for extended bass response without distortion
• Stereo XLR input and output connectors for easy integration into audio systems
• Adjustable volume, EQ, phase, and crossover frequency controls
• Lightweight Baltic birch plywood cabinet with durable polyurea coating
• Ergonomic handles with rubber grips for easy transport and setup
• M20 threaded pole mount for speaker integration
• Front-vented ports for improved efficiency and reduced distortion
• Maximum SPL of 131 dB for powerful, immersive bass in live sound environments
• CE compliant and designed for high durability and long-term use

Specifications

Acoustical specifications

• Frequency Response: 40 Hz ÷ 120 Hz
• Max SPL @ 1m: 131 dB

Transducers

• Woofer: 15", 3.0" v.c

Input/Output section

• Input signal: bal/unbal
• Input connectors: XLR
• Output connectors: XLR
• Input sensitivity: -2 dBu/+4 dBu

Processor section

• Hi-Pass Frequencies: 110 Hz
• Low-Pass Frequencies: 80 Hz
• Protections: Thermal, RMS
• Limiter: Soft Limiter
• Controls: Volume, EQ, Phase, Xover

Power section

• Total Power: 1400 W Peak, 700 W RMS
• Low frequencies: 1400 W Peak, 700 W RMS
• Cooling: Convection
• Connections: VDE

Standard compliance

• Safety agency: CE compliant

Physical specifications

• Cabinet/Case Material: Baltic birch plywood
• Handles: One each side
• Pole mount/Cap: M20 thread
• Grille: Steel with clothing
• Color: Black

Size / Weight

• Height: 23.54 inches
• Width: 16.54 inches
• Depth: 23.23 inches
• Weight: 66.14 lbs

Shipping information

• Package Height: 25.51 inches
• Package Width: 25.12 inches
• Package Depth: 18.82 inches
• Package Weight: 76.94 lbs