Rcf SUB 708-AS MK3

The RCF SUB 708-AS MK3 is an 18-inch active subwoofer designed for live sound reinforcement and demanding DJ applications. Equipped with a high-performance ceramic magnet driver and a 1400W peak Class D amplifier, it delivers up to 133 dB SPL with impressive accuracy and dynamics. Compact and robust, it is the ideal complement to 8” and 10” speakers in portable or fixed installation systems.

Exceptional Sound Performance

The SUB 708-AS MK3 combines power, precision, and reliability. Its controls, accessible from the rear panel (volume, EQ, polarity, crossover frequency), allow for quick adaptation to any environment. Thanks to Bass Motion Control (BMC) technology, it offers deep low-frequency extension while maintaining the linearity and stability of the speaker. Unlike traditional high-pass filters, this innovative processing optimizes phase response and ensures faithful reproduction, even at very high volumes.

High-Power Class D Amplifier

The integrated 1400W peak (700W RMS) amplifier ensures powerful and precise bass reproduction. Its exceptional energy efficiency eliminates the need for cooling fans; the entire unit relies on a solid aluminum heatsink. The integrated, low-distortion active filter and advanced limiter guarantee optimal protection and a natural signal reproduction, even under extreme conditions. EN62368-1 certified, the SUB 708-AS MK3 offers maximum safety and a lightweight, high-efficiency power supply.

Intuitive Controls and Connectivity

The rear panel features practical functions for sound engineers:

Crossover selector: 80 Hz / 120 Hz

Polarity inversion

Line or high-pass output for flexible configuration

These options allow for easy integration of the subwoofer into a variety of sound systems. A rugged enclosure, designed for touring

Designed to withstand the most demanding conditions, the SUB 708-AS MK3 features a birch plywood enclosure, finished with a scratch-resistant polyurethane coating. Its ergonomic handles and lightweight design facilitate easy transport and stacking. The threaded M20 pole mount on top allows for the attachment of a satellite speaker. The powder-coated metal grille, lined with acoustic foam, provides effective protection against dust and moisture, while the front vents allow for use even in confined spaces.

An essential choice for live sound and DJ applications

Renowned for its high SPL and exceptional power-to-size-to-weight ratio, the RCF SUB 708-AS MK3 is a benchmark in the RCF SUB 7 series. It is perfectly suited for small to medium-sized venues, live concerts, clubs, and DJ performances. Reliable, powerful, and versatile, it transforms every performance into an immersive and impactful sonic experience.