RCF SUB 9019-AS 19-Inch Touring-Grade Networked Subwoofer
The RCF SUB 9019-AS is a high-power 19-inch active subwoofer built to anchor modern touring systems, high-end installs,
and large-format DJ rigs. A 19-inch high-excursion precision transducer driven by a 4000W Class-D amplifier
delivers up to 138 dB Max SPL with a frequency response from 30 Hz to 200 Hz, giving engineers the low-frequency
authority needed for today’s electronic, hip-hop, and live program material.
Inside, SUB 9000 Series technology combines advanced RCF Precision Transducers with lightweight aluminum core coils,
high-damping cones, composite spiders and a 4-layer inside–outside voice coil. The ultra-long excursion design produces powerful but articulate bass,
staying faithful to subtle low-frequency detail even at high levels. Bass Motion Control (BMC) manages excursion by mapping the
woofer’s behavior and limiting only over-excursions, replacing traditional high-pass protection filters that can compromise phase integrity.
System tuning is streamlined through RDNet networked control, offering EQ, delay, cardioid options and factory-tuned
ACE crossover presets for RCF speakers, including FiRPHASE-enabled tops and legacy line arrays. For fast, offline setup,
RDTap contactless configuration allows engineers to design systems in the app and load complete presets by tapping the RDTap logo,
even when the subwoofer is unpowered.
Designed for rigorous touring, the SUB 9019-AS features a weatherproof plywood cabinet with a durable polyurea finish,
an included I/O panel rain cover, rugged powerCON TRUE1 TOP AC connectors, dual M20 pole mounts and side handles.
Connections for a detachable front cart (sold separately) and compatibility with the modular Subwoofer Suspension Kit support stacked, wheeled,
and flown configurations. Whether it is deployed under HDL 28-A arrays or driving ground-based cardioid stacks for Chicago DJs, the SUB 9019-AS
delivers deep, controlled low end with tour-ready reliability.
- Real-World Applications and Sound Roles:
- Ground-stacked and flown sub arrays for touring line-array systems in arenas, theaters and outdoor stages.
- High-output club and live venue subwoofer for EDM, hip-hop and live band shows demanding deep, punchy bass.
- Chicago mobile DJ rigs and rental inventories needing compact footprints with big-rig low-frequency performance.
- Networked install and festival systems where RDNet, ACE presets and BMC simplify tuning and keep results consistent.
- Cardioid and directional bass applications using delay, polarity and preset-based control to shape low-frequency coverage.
Where the RCF SUB 9019-AS Excels
- Arena-Level Output: A 19-inch high-excursion transducer and 4000W Class-D amplifier produce up to 138 dB Max SPL with authority from 30 Hz to 200 Hz.
- Precision Low-Frequency Detail: Advanced Precision Transducers technology and a 4-layer inside–outside voice coil keep low end fast, musical and controlled.
- Bass Motion Control: BMC excursion management removes the need for aggressive high-pass filtering, preserving phase response while protecting the driver.
- Networked System Management: RDNet integration enables centralized EQ, delay, cardioid configurations and monitoring across large sub arrays and mixed RCF systems.
- Contactless Setup with RDTap: Engineers can design rigs in the RDTap app and transfer full configurations to each SUB 9019-AS by tapping the rear-panel RDTap area, even when unpowered.
- ACE Crossover Presets: Advanced Crossover Engine presets make it straightforward to pair the sub with FiRPHASE-enabled tops and legacy HDL arrays without guesswork.
- Tour-Ready Weather Protection: A weatherproof plywood cabinet, polyurea finish and included I/O rain cover keep the system working in challenging outdoor conditions.
- Rigging and Transport Flexibility: Dual M20 pole mounts, modular Suspension Kit compatibility and a detachable front cart option support stacked, flown and wheeled deployments.
- Built for Demanding Crews: Ideal for production companies and Chicago DJs who need reliable, repeatable sub performance under tight timelines and heavy schedules.
Control Modes for the RCF SUB 9019-AS
The SUB 9019-AS offers a control platform that serves both fast field operation and deep system optimization. Front-panel controls and
indicators keep everyday adjustments simple, while RDNet and RDTap provide advanced configuration and monitoring tools for complex rigs.
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Onboard Level and Preset Controls: The panel provides MUTE, VOL and PRESETS
controls so you can set sub level and recall operating modes directly on the cabinet without connecting a computer.
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RDTap Contactless Configuration: Using the RDTap app, sound engineers can configure presets, equalization, delay, time alignment and
mid-low compensation simply by tapping the RDTap logo on the back panel. Settings can be written to or read from the subwoofer even when it is unpowered.
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RDNet Networked Control: Onboard RDNet with etherCON connectivity allows comprehensive real-time management of compatible devices,
including the SUB 9019-AS, from a central interface. Users can group subs, apply system EQ, set delay, configure cardioid arrays and monitor status across an entire network.
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Advanced Crossover Engine (ACE): ACE presets manage time delay and phase alignment between the SUB 9019-AS and RCF full-range speakers,
including FiRPHASE-enabled models and legacy arrays, ensuring a seamless transition between sub and tops.
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Protection and Limiting: A soft limiter and thermal protection are integrated into the processing section to maintain safe operation at high output levels,
with BMC helping to keep excursion under control without compromising low-frequency extension.
Together, these control modes let you scale from a single sub on a pole-mounted rig to complex cardioid and flown configurations, while maintaining predictable, repeatable results.
Rear Panel Connections and RDTap Controls — RCF SUB 9019-AS (Image 3 Above)
This legend corresponds to the numbered indicators on the SUB 9019-AS rear panel, helping engineers and DJs quickly understand every connection and control used for system setup, tuning, and networked management.
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INPUT – Female XLR Inputs (Balanced)
The system is equipped with female XLR connectors for balanced audio signals. These inputs are designed to accept professional-grade audio sources, ensuring full compatibility with standard mixers and processors.
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LINK OUT – Male XLR Signal Output
The male XLR output connector provides a loop-through feature, enabling daisy-chaining of additional speakers. This connector is wired in parallel with the input and can also be used to send the audio signal to supplementary devices such as other powered speakers or amplifiers.
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XOVER OUT – Male XLR Signal Output
This balanced male XLR output is specifically engineered to feed RCF satellite speakers. Its configuration can be customized by loading a preset via the RDTap app, ensuring seamless integration between the subwoofer and satellite speakers.
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LEVEL Selector
The seven-position level selector provides attenuation from 0 dB (no reduction) to –12 dB in 2 dB increments. This precise adjustment helps optimize system performance by preventing clipping or distortion from overly strong input signals, ensuring smooth integration with the rest of the audio system.
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SETUP Selector
The setup selector is a four-position rotary switch that governs the operating configuration of the subwoofer. The available settings are:
1 – Low-pass filter at 60 Hz
2 – Low-pass filter at 80 Hz
RDNET – RDNet-based configuration
RDTAP – App-based configuration via RDTap
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SERVICE – USB-C Port
A dedicated USB-C port is provided for service access. The recommended method for updating the internal firmware is via RDNet, keeping the subwoofer aligned with the latest available features and fixes.
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SUB MUTE Button
When the SUB MUTE button is pressed, the subwoofer enters a muted state and the button illuminates red to clearly indicate that the sub is muted. At the same time, the DELAY, PHASE, and CARDIOID LEDs on the RDTAP panel also light up red, providing additional visual confirmation even at a distance.
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DATA IN – Data Link: RDNet Input/Output Section
The RDNet In/Out section is equipped with etherCON connectors for seamless integration within an RDNet network. This connectivity enables comprehensive system control and monitoring via RDNet software, allowing precise adjustments and real-time feedback in advanced audio management workflows.
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Function and Status Indication LEDs
A dedicated LED group provides visual feedback for system status and configuration, including:
- SIGNAL LED
- CONFIG LED
- DELAY LED
- POLARITY LED
- CARDIOID LED
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RDTAP Area
The RDTAP Area is a specialized zone on the rear panel that facilitates streamlined configuration transfer even when the subwoofer is unpowered. By placing a smartphone running the RDTap app near this area, users can wirelessly transmit a pre-designed system configuration directly to the subwoofer or receive the current configuration back into the app.
High-Excursion 19-Inch Engine for Deep, Focused Bass
The SUB 9019-AS is built around a 19-inch high-excursion neodymium transducer designed to move serious air without sacrificing control.
The ultra-long excursion moving mass and 4.0-inch voice coil translate amplifier power into real acoustic output, supporting demanding show levels across
large audience areas. Even at high SPL, the system retains clarity and punch so kick, bass guitar and synth content stay distinct instead of blurring together.
This makes the 9019-AS a powerful choice for productions that need arena-capable bass from a compact package, whether it is deployed under HDL 28-A arrays
or as a ground-stacked cluster for DJ-focused events.
Precision Transducers and Neodymium Motor Design
SUB 9000 Series subwoofers employ the latest RCF Precision Transducers, using lightweight aluminum core coils, high-damping cellulose cone
material and composite spiders to produce accurate low-frequency reproduction. The 4-layer inside–outside coil structure improves thermal handling and control,
helping the driver maintain linear behavior during long, high-power sets.
A high-class neodymium magnet system with a stronger magnetic field than typical neodymium grades supports higher force and efficiency, enabling the SUB 9019-AS
to deliver serious performance from a relatively compact, truck-friendly enclosure.
Advanced Crossover Engine and Legacy System Upgrades
The Advanced Crossover Engine (ACE) is engineered to precisely match time delay and align phase across a broader band than typical crossover filters.
When pairing the SUB 9019-AS with RCF tops and line arrays, ACE presets help maintain a coherent transition between LF and full-range content, improving impact and clarity.
ACE also provides a practical path for upgrading existing systems. Legacy arrays like HDL 20-A and HDL 6-A can be paired with ACE-enabled
subs to gain factory-tuned presets, FiRPHASE filter alignment, RDNet control, and modern low-frequency performance—without replacing the entire rig.
RDTap Contactless Configuration and Near-Field Control
RDTap introduces contactless configuration specifically tuned for near-field use. With the RDTap app, system designers can build presets, set EQ, delays and
compensation curves on the move, then transfer those setups directly to each SUB 9019-AS by placing a smartphone near the RDTap area on the back panel.
Because the system works at close range, it avoids accidental changes to the wrong cabinet. Configurations can be prepared and loaded before rigs are powered,
making it especially useful for festival changeovers, pre-rigs and complex cardioid deployments where time and accuracy are critical.
Weatherproof Cabinet, Rain Cover and Touring Workflow
Designed for real touring environments, the SUB 9019-AS uses a weatherproof plywood enclosure coated with durable polyurea.
The included magnetic rain cover shields the I/O panel from rain and dust, protecting signal and power connections during outdoor events and long-term setups.
PowerCON TRUE1 TOP connectors provide secure AC in and out, while ergonomic side handles and a stackable form factor help crews move and position
the 53.4 kg cabinet efficiently. Connections for a detachable front cart (sold separately) and compatibility with the modular Subwoofer Suspension Kit let you build
wheeled stacks for loading docks or flown arrays for arenas with a consistent workflow.
Modular Suspension and Cardioid System Flexibility
The modular Subwoofer Suspension Kit is engineered from high-strength steel to support flown subwoofer configurations using SUB 9000 Series models,
including the SUB 9019-AS. It allows secure suspension of multiple units and supports cardioid layouts, making it possible to control low-frequency coverage in
arenas, theaters and outdoor stages.
When combined with RDNet and BMC, these hardware options make it straightforward to design arrays that keep energy on the audience while reducing low-frequency
spill on stage and into neighboring areas—ideal for tight urban venues and Chicago-style outdoor events.
How to Deploy the RCF SUB 9019-AS in the Field
Start by deciding whether the SUB 9019-AS will be ground-stacked, flown, or rolled into position on a front cart. For most club, theater and DJ uses,
ground-stacking is the fastest: place the subs along the front of the stage or under HDL 28-A arrays, making sure cabinets are level and securely coupled.
Use the M20 pole mounts on the top or side to support compatible RCF tops when building compact stacks.
Connect audio sources to the balanced XLR inputs and daisy-chain additional subs or system devices from the XLR outputs. Use
powerCON TRUE1 TOP connectors to feed AC to each cabinet within proper current limits. Once the physical layout is set,
apply ACE presets to pair the subs with your RCF tops, then refine the system using RDNet for EQ, delay and cardioid configurations.
For pre-configured touring packages and festival deployments, use RDTap to load presets, delay values and alignment settings before rigs are powered.
Tap the RDTap area on each SUB 9019-AS with a smartphone running the app to transfer or read back configurations, and then verify final performance at front-of-house
with RDNet monitoring. This workflow keeps setups consistent from venue to venue while still allowing quick adjustments for room acoustics.
Lock in massive, controlled low end fast—stack it, fly it or run cardioid clusters, and let the SUB 9019-AS carry the bottom octave for every Chicago show.
Why Choose the RCF SUB 9019-AS from AVMaxx
AVMaxx understands how the SUB 9019-AS fits into real systems—from flown HDL 28-A arrays to ground-stacked DJ rigs in Chicago ballrooms and outdoor festivals.
When you work with us, you get guidance shaped by day-to-day experience with RCF subs, RDNet networks, ACE presets and RDTap workflows, not just spec sheets.
We can help you decide how many subs you need, how to deploy cardioid stacks, how to integrate new 9000 Series subs with existing RCF arrays, and how to keep rigs
scalable for future upgrades. Whether you are building a new rental inventory, upgrading a house system, or tightening up a touring package, the focus is always on
clean, dependable low end that keeps clients and crowds coming back.
AVMaxx is your partner for RCF systems—field-aware recommendations, dependable support, and builds that help Chicago DJs and event pros perform with confidence.
Frequently Asked Questions — RCF SUB 9019-AS
How much output and low-frequency extension does the RCF SUB 9019-AS provide?
The SUB 9019-AS delivers up to 138 dB Max SPL with a frequency response of 30 Hz to 200 Hz.
Its 19-inch high-excursion neodymium transducer and 4000W Class-D amplifier are designed for large rooms, arenas and demanding outdoor events.
What makes the SUB 9019-AS a strong choice for DJs and line-array systems?
The sub combines deep output with Bass Motion Control, ACE crossover presets and RDNet control,
making it easy to integrate with RCF tops and HDL arrays. For DJs and Chicago-style events, this means tight, punchy low end that scales from clubs
to festival stages with consistent voicing.
How does RDTap contactless configuration work on the SUB 9019-AS?
RDTap lets you design system configurations in the app and then load them onto each subwoofer by placing a smartphone near the RDTap area on the rear panel.
You can write presets, EQ, delay and alignment settings to the SUB 9019-AS—or read the current configuration back into the app—even when the unit is unpowered.
Can the SUB 9019-AS be used in cardioid or directional subwoofer arrays?
Yes. The SUB 9019-AS supports cardioid operation via RDNet, using delay, polarity and appropriate cabinet placement to steer low-frequency energy.
With the modular Subwoofer Suspension Kit and ground-stacked options, you can build directional arrays for arenas, theaters and outdoor stages.
How weather-resistant is the SUB 9019-AS and what accessories are available?
The cabinet is built from weatherproof plywood with a durable polyurea finish and includes a magnetic rain cover for the I/O panel.
PowerCON TRUE1 TOP connectors support secure AC distribution. A detachable front cart and the modular Subwoofer Suspension Kit are available
as accessories for easier transport and flown configurations.
Tell AVMaxx about your tops, venues and touring plans, and we will help you design an RCF SUB 9019-AS system that delivers deep, confident bass on every stage.
