RCF KX 08-A High-Performance 2-Way Active RDNet Speaker

RCF KX 08-A Compact 2-Way Active Speaker for Pro Systems

The RCF KX 08-A is a high-performance 2-way point-source active speaker that packs serious output and control into a compact enclosure. An 8 inch neodymium woofer with a 2.5 inch voice coil in a bass-reflex design works with a 1.75 inch PKX dome neodymium compression driver on a 90° x 70° True Resistive Waveguide to deliver up to 128 dB max SPL and a 65 Hz to 20000 Hz frequency response. The rotatable horn lets you adapt coverage to vertical or horizontal mounting while maintaining precise directivity.

A two-channel 2000 W Class-D amplifier, tailored to each transducer, sits at the heart of the system. High-end AD/DA conversion and dedicated DSP handle crossover at 1400 Hz, protection, and voicing, while FiRPHASE and Bass Motion Control processing keep timing accurate and low frequencies tight. With onboard RDNet networked management, engineers can monitor status, adjust parameters, and recall presets from a central interface, whether the KX 08-A is part of a small cluster or a larger distributed rig.

The weatherproof Baltic birch enclosure is reinforced internally, coated with durable polyurea paint, and tied to a solid machined aluminum rear structure for fanless heat dissipation. Multiple M10 points, side hardware, a 35 mm pole mount insert, die-cast handles, and PowerCON TRUE1 TOP mains connectors make the KX 08-A ready for touring, fixed installation, and portable PA work in Chicago venues, houses of worship, corporate rooms, and live stages.

Real-World Applications and Sound Roles:

• Compact mains for clubs, lounges, and small live rooms where footprint matters.
• Front fills, under-balcony coverage, and side fills in larger PA systems.
• Surround, height, or effects channels in immersive and 3D audio setups.
• High-quality nearfield monitoring for production spaces and live broadcast positions.
• Portable PA for corporate events, presentations, and small live bands.
• Discreet, high-output speakers in blacked-out theatrical or church installs.

Where the RCF KX 08-A Excels

• Serious Output from a Small Box: A two-channel 2000 W Class-D amplifier and 128 dB max SPL let the KX 08-A cover audiences that typically demand larger enclosures.
• Controlled 90° x 70° Coverage: The rotatable TRW horn keeps dispersion at 90° x 70°, helping you keep energy on the audience and off walls and ceilings.
• Precision 8 Inch Low-Frequency Section: The 8 inch neodymium woofer with 2.5 inch voice coil and Bass Motion Control DSP extends low frequencies and enhances midrange efficiency.
• PKX Dome Compression Driver: A 1.75 inch PKX dome neodymium compression driver on the True Resistive Waveguide delivers detailed high frequencies and improved intelligibility.
• Advanced DSP Platform: FiRPHASE alignment, fast limiters, and protection logic keep the system sounding clean and linear at all working levels.
• RDNet Integration: Onboard RDNet provides per-box monitoring, control, and grouping for fast tuning across complex systems.
• Weather-Resistant Birch Enclosure: Baltic birch plywood, water-resistant adhesives, and polyurea coating support outdoor and demanding indoor environments.
• Flexible Mounting Options: Multiple M10 points, side hardware, and a 35 mm pole insert support ground-stacked, pole-mounted, or flown configurations.
• Tour-Ready Power and I/O: PowerCON TRUE1 TOP in/out connectors, XLR audio, and RDNet Ethercon keep power and signal reliable in mobile rigs.

Control Modes for the RCF KX 08-A

As an active loudspeaker, the RCF KX 08-A combines amplification and DSP, giving you straightforward local control plus deep networked control through RDNet. The onboard processor manages crossover, protections, and voicing so you can focus on gain structure, routing, and system integration.

• Input and Linking: Feed the KX 08-A with balanced or unbalanced signals via the XLR input and use the XLR output for signal link-through to additional speakers.
• Networked Management: RDNet Ethercon connectors tie the KX 08-A into the RDNet platform for remote monitoring of status, limiters, temperature, and detailed DSP parameters.
• Operating Modes: Rear panel controls offer Bypass and Linear/High Pass options so you can voice the cabinet for stand-alone use or for operation above a subwoofer system.
• Level and Sensitivity: Adjust input sensitivity (-2 dBu/+4 dBu) and overall volume so the speaker fits cleanly into your gain structure without clipping upstream devices.
• Protections and Limiting: Thermal and HF protections plus fast limiters are handled internally, protecting the transducers while maintaining predictable behavior at high SPL.
• Power Distribution: Convection cooling and PowerCON TRUE1 TOP in/out connectors provide quiet, fanless operation and robust locking mains connections on stage and in installs.

8 Inch Point-Source Engine with True Resistive Waveguide

The KX 08-A centers on an 8 inch neodymium woofer in a bass-reflex enclosure and a 1.75 inch PKX dome compression driver mounted on a 90° x 70° True Resistive Waveguide. This geometry is designed so the woofer’s dispersion matches the horn through the crossover region, preserving coverage continuity and tonal balance as you move through the listening area.

With a maximum SPL of 128 dB and a 65 Hz to 20000 Hz response, the cabinet can cover a wide range of program material, from speech and corporate playback to live bands and DJ sets that rely on a solid low-mid foundation, especially when paired with appropriately tuned subwoofers.

PKX Dome Compression Driver for Detailed High Frequencies

The 1.75 inch PKX dome used in the KX 08-A is built from a modified PEEK-based film engineered by RCF’s Precision Transducers laboratory. Reinforcing ribs maintain a slim but rigid profile, helping the driver remain stable under high levels while preserving delicate transient information.

Coupled to the rotatable True Resistive Waveguide, the PKX driver maintains clarity and articulation in environments that are often difficult to tame, such as reflective corporate rooms, theaters, and compact club spaces where intelligibility is critical to the show.

KX DSP Platform with FiRPHASE and Bass Motion Control

Inside the KX 08-A, the KX DSP platform functions as a real-time engine for crossover, alignment, and protection. FiRPHASE technology uses FIR filters to correct phase and amplitude where needed, delivering coherent, time-aligned sound across the listening area with minimal latency.

• FiRPHASE alignment: Helps deliver transparent imaging and consistent tonality between KX series loudspeakers.
• Bass Motion Control: Maps the woofer’s dynamic behavior to limit over-excursion without relying solely on steep high-pass filters, preserving both low-frequency extension and phase response.

Combined with precise crossover at 1400 Hz and dedicated processing for each band, this DSP platform makes the KX 08-A feel refined and repeatable, even when pushed to high output in demanding shows.

RDNet Platform for Modern Networked Systems

RDNet support transforms the KX 08-A into a fully networked node in larger RCF ecosystems. Through the RDNet software, engineers can group speakers, recall presets, apply EQ, and observe operating conditions like temperature, limiter activity, and input levels in real time.

This level of control is especially valuable in distributed installs and immersive rigs where many loudspeakers must work together. Instead of guessing, you get a direct view into how each KX 08-A is performing and can adjust the system response quickly from a central laptop position.

Tour-Ready Birch Enclosure and Rigging Hardware

The KX 08-A enclosure is built from high-quality Baltic birch plywood, assembled with water-resistant adhesive and coated in weatherproof polyurea paint. The cabinet is internally reinforced and connected to a machined aluminum rear structure that supports the amplifier and acts as a silent heat sink.

Three M10 points on the top and bottom, side hardware with additional M10 and pin locations, a 35 mm pole insert, and a top handle give installers and production crews a wide range of mounting and handling options. A steel grille with internal cloth provides protection from dust and humidity without compromising acoustic transparency, making the KX 08-A comfortable in both indoor and outdoor environments.

How to Deploy RCF KX 08-A in the Field

Deploying the RCF KX 08-A starts with deciding its role in your system: as a compact main, a fill or surround element, or part of an immersive array. From there, you choose mounting, orientation, and processing that support the coverage pattern and output requirements of the room.

• Plan the coverage: Use the 90° x 70° pattern to map how many cabinets you need and where they should aim to keep energy on the audience and off reflective surfaces.
• Select the mounting method: Choose between the 35 mm pole insert for ground-stacked setups, M10 points for flown or bracketed positions, and side hardware when you need horizontal mounting on truss or walls.
• Rotate the horn if needed: Before final tightening, rotate the True Resistive Waveguide so the 90° x 70° pattern aligns with the cabinet’s vertical or horizontal orientation.
• Wire signal and power: Run balanced XLR to the input, use XLR link outputs where more speakers are required, and connect mains using PowerCON TRUE1 TOP in/out connectors.
• Set operating mode and gain: Choose Linear or High Pass modes to match stand-alone or subwoofer-assisted operation, set input sensitivity, and trim volume for a clean gain structure.
• Fine-tune with RDNet: Once the system is up, use RDNet to group KX 08-A cabinets, apply presets, correct room response, and confirm that limiters and temperatures stay within safe ranges.

Deployed with thoughtful rigging, horn orientation, and RDNet tuning, the KX 08-A delivers tight, controlled coverage and impressive output for Chicago clubs, corporate spaces, houses of worship, and mobile productions.

Why Choose the RCF KX 08-A from AVMaxx

AVMaxx focuses on loudspeakers that hold up in demanding real-world work, and the RCF KX 08-A fits that approach. Its 8 inch neodymium woofer, PKX dome compression driver, 2000 W Class-D amplifier, and advanced DSP make it a compact box that feels at home in modern networked systems, from immersive installs to portable rigs.

When you source the KX 08-A through AVMaxx, you also tap into field-aware experience: guidance on rigging choices, RDNet grouping, and how to pair KX cabinets with subs and other RCF elements so systems translate cleanly from venue to venue. That support helps Chicago integrators, DJs, and production companies get predictable results instead of trial-and-error deployments.

AVMaxx is your resource for RCF KX solutions—practical design help, dependable support, and system builds that make compact speakers like the KX 08-A punch far above their size.