RCF SUB 702AS MK3 | 12in - 129 dB | Compact Subwoofer with BMC & 1400W Amp

Powered Subwoofer

The RCF SUB 702AS MK3 is a compact, high-performance 12" active subwoofer built for portable PA systems, live sound, and DJ applications. Delivering up to 129 dB SPL with a powerful 1400W Class-D amplifier, it provides tight, controlled low-end performance in a rugged, road-ready design. Ideal for pairing with 8" or 10" full-range speakers, the SUB 702AS MK3 brings depth and punch to small and mid-sized venues.

RCF SUB 702AS MK3 Competitive Differences

• 129 dB SPL from a 12" ceramic woofer and 1400W Class-D amp
• Bass Motion Control DSP for extended low-frequency response without phase distortion

RCF SUB 702AS MK3 Description

The SUB 702AS MK3 combines powerful output with portability and versatility. Its 12" woofer is housed in a bass reflex enclosure made from Baltic birch plywood and protected by a rugged polyurea coating. Internally, the sub uses RCF’s advanced BMC (Bass Motion Control) algorithm to enhance low-end response while maintaining transducer stability, eliminating the need for a traditional high-pass filter and preserving signal integrity. The 1400W Class-D amplifier delivers tight transient response and low heat loss, with convection cooling and no moving parts for quiet operation and long-term reliability. Rear panel controls offer adjustable crossover (80Hz/120Hz), polarity switch, and EQ settings for tuning to any system or space. With a built-in stereo crossover, the SUB 702AS MK3 is easy to integrate into full-range systems. M20 pole mounting, recessed side handles, and a steel grille with dust-reducing foam lining make it ideal for portable setups and installs alike.

Model Features

• 1400W Class-D amplifier (700W RMS)
• 12" woofer with 2.5" voice coil and ceramic magnet
• Max SPL: 129 dB for tight and punchy low-end
• Bass Motion Control (BMC) excursion management
• 80Hz / 120Hz crossover switch with phase invert
• Rear-panel EQ, volume, and polarity controls
• Stereo XLR inputs and outputs
• Fanless convection cooling for silent operation
• M20 threaded pole mount and rugged side handles

Model Specifications

• Max SPL: 129 dB
• Power Output: 1400W Peak / 700W RMS
• Frequency Response: 40 Hz – 120 Hz
• Woofer: 12" with 2.5" voice coil
• Inputs: XLR (balanced/unbalanced)
• Outputs: XLR
• Controls: Volume, EQ, Phase, Xover (80Hz/120Hz)
• Cooling: Convection (fanless)
• Cabinet: Baltic birch plywood with polyurea coating
• Mount: M20 threaded pole mount
• Grille: Steel with internal foam backing
• Dimensions: 20.59 x 14.17 x 20.28 in (523 x 360 x 515 mm)
• Weight: 47.4 lb (21.5 kg)

What's In The Box

• RCF SUB 702AS MK3 Subwoofer
• VDE Power Cable
• User Guide