The RCF SUB 8004-AS 18" Active High Power Subwoofer is one of the most powerful 18" subwoofers in pro-sound category. Featuring a high power, hypervented 18" woofer, with 4" inside/outside voice coils, this cabinet is designed to deliver a serious amount of low frequency. It is a direct radiating, high output, large-format sub woofer system proven in complementing high efficiency, full-range loudspeakers.
SUB 8004-AS has been designed to extract the greatest efficiency from every part of the system, resulting in an effortless reproduction of low frequency transient response. As a self-powered system, the transducers, amplification and DSP control electronics of the SUB 8004-AS are designed to optimize performance and maximize its power.
The SUB 8004-AS 's efficiently tuned cabinet houses two RCF Precision backvented, long-excursion, new high power 18" inch cone drivers, providing a fast and controlled reproduction of the bass frequency range. Featuring a 4" inside/outside voice coil to minimize power compression and extend the life of this product.
The drivers have also been engineered for extreme efficiency, using highgauss ferrite magnets for the most powerful magnetic field strength. High magnetic field strength increases the driver's sensitivity, which yields greater output, while keeping heat dissipation requirements within operational tolerances.
Powered by a 1250W digital amplifier module, the SUB 8004-AS can perform in the most demanding situations. The input board includes volume control, deep/punch switch, high pass switch, phase switch, cardioid and time delay. An easy to reach delay knob on the back allows to set the overall delay of the speaker, in meters, according to its application. 3 status LEDs - Power / Signal / Status are provided for monitoring the system.
The amplifier features a solid mechanical aluminum structure which not only stabilizes it during transportation but also assists in heat dissipation and, with DSP control electronics and power supply, is integrated into a single, field-replaceable module mounted in the rear of the cabinet. The cabinet is constructed of multi-ply hardwood and coated with a textured black finish. Integral metal grilles lined with acoustical black mesh protect the cone drivers. Integrated mechanics are for multiple configuration with HDL 20-A.