The black SUB 8006-AS Professional Series Active Subwoofer from RCF features two 18” transducers with 4” inside/outside voice coils, designed to deliver a strong low-frequency response. This direct-radiating high-output large-format subwoofer system is designed to compliment full-range loudspeakers. Driver mounting maximizes cone area and minimizes frontal area, providing acoustical performance and physical configuration well suited for creating large subwoofer arrays.

This subwoofer has been designed to extract efficiency from every part of the system, allowing for accurate low-frequency transient response. As a self-powered system, the transducers, amplification, and DSP are designed to optimize performance, and maximize power.

This subwoofer’s efficiently tuned cabinet houses two precision back-vented long-excursion high-powered 18” cone drivers, providing controlled reproduction of the bass frequency range. It has a 4” inside/outside voice coil to minimize power compression and extend the life of the speaker.

The drivers have been engineered using high-gauss ferrite magnets for powerful magnetic field strength. High magnetic-field strength increases the driver’s sensitivity, which yields high output while keeping heat dissipation requirements within operational tolerances.

This subwoofer is powered by a 2500W digital amplifier module with Class-D technology that is designed for performance and high efficiency in a lightweight solution. The amplifier features a solid mechanical aluminum structure, which not only stabilizes the amplifier during transportation but also assists it in heat dissipation. The integrated DSP offers an equalizer, a soft limiter, a compressor, and user-adjustable settings such as deep/boost EQ, low pass, phase reverse, and a preset for a cardioid setup.

An easy-to-reach delay knob on the back allows you to set the overall delay of the speaker in meters, according to its application. Power, Signal, and Status LEDs are provided for monitoring the system. The 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 configurations with the separately available HDL 20-A Active Line Array Module.

Professional Series Active Subwoofer    5000W Peak, 2500W RMS    141 dB Max SPL    30 to 120 Hz Frequency Response    2 x 18" Woofers    DSP Controlled Input Section    Selectable Presets + Delay Control    Designed for Use with HDL 20-A Speakers    Tour-Grade Baltic-Birch Cabinet    Includes Power Cord

High-pass filter

Pole mount cap

5000W peak power, 2500W RMS

141 dB maximum SPL

30 Hz to 120 kHz frequency response

2 x 18" woofer

DSP-controlled input section with selectable presets

Delay control

Integrated mechanics for multiple configuration with the separately available HDL 20-A Active Line Array Module

Baltic-birch tour-grade cabinet

Applications: Live sound, rental, portable PA, clubs, ballrooms, live theatres, houses of worship, theme parks, music playback and sound reinforcement in small- and mid-size venues, and corporate A/V professionals and sound-system hire companies.

Related Questions and Answers

Q: 1. Is this 1200 Watts RMS what is Max watts? Frequency response? +/- ? (3,6,10?)

A: The HK Audio Linear Sub1800 A Active 18" Subwoofer Speaker Cabinet has a Class D amplifier with a peak power rating of 1200 watts. The frequency response range +/-3 dB is 42 Hz to X-Over and the frequency response -10 dB is 38 Hz to X-Over. It has a maximum SPL rating of 132 dB @ 10% THD. The Sub1800 A is an ideal match for the Linear 3 and Linear 5 Mid/High Series Speaker Cabinets.

Q: 2. Can you lay the subwoofer on its side or does it have to be vertical?

A: Yes you can lay the Sonos Wireless Subwoofer on its side.

Q: 3. Hi, what cable s would you recommend for these speakers?

A: The Focal Alpha 80 Evo Active 8" Monitors and Sub One Subwoofer Kit should be connected using XLR cables, such as BH #KOM4010.

Q: 4. I see the PR 63 Power Rack listed as a related product with these a lot. Do you need the Power Rack paired with these? Can I just have an edison to powercon adapter for these? Follow-up, does this affect the pass-through power in any way?

A: You can do powercon to edison here, there is no problem. Each element takes up 6amps so no more than 2 on a 15amp circuit. The power rack helps manage the power distribution when touring

Q: 5. Hello, just to make sure, this price is one piece or one pair? Thanks

A: Price is per each.

Q: 6. Do I need a Sonos Playbase as a part of the Sonos ecosystem? Anything else I need to use this?

A: The Sonos speakers connect with each other over WiFi. The Playbase is one of the many options that can sync with any other Sonos device like the Sub.

Q: 7. what's the SPL on this?

A: The QSC KS118 has a max SPL of 136 dB.

Q: 8. Is this recommended for down-firing subwoofers?

A: This can work for any subwoofer that can fit on top. Whichever way the port fires out, this will minimize vibrations and resonance.

Q: 9. Open box or refurbished?

A: This SKU is for neither. This is a new, manufacturer sealed item.

Q: 10. Hi, for the top pole mount spec says "1 x M201.38" / 35 mm 3/8"-16 Female (Top)" Is it a cup or a thread, and what size??

A: The M20 thread on the QSC KS118 is a thread size that is commonly found on subwoofer poles like the On-Stage Subwoofer Pole with M20 Thread (Black) (B&H # ONSS7746).