RCF SUB 808-AS Dual 8-Inch Low-Profile Active Subwoofer
The RCF SUB 808-AS is a compact, low-profile active subwoofer built to deliver full-size club bass from a discreet footprint.
Two vented 8-inch neodymium woofers with 2.5-inch voice coils are each driven by a dedicated Class-D amplifier channel for a
combined 2000 watts of peak power, producing up to 129 dB of max SPL with a usable response down to
40 Hz. For Chicago DJs, live sound providers, and fixed installs that need serious low-frequency impact
without blocking sightlines, this subwoofer brings heavyweight performance in a surprisingly small package.
High-end 96 kHz / 32-bit floating-point AD/DA conversion and onboard DSP work with RCF
Bass Motion Control (BMC) excursion management to keep the woofers linear even at extended low
frequencies. Rather than relying on aggressive high-pass filters, BMC maps the woofer’s behavior and limits only
over-excursion, preserving punch and phase integrity. Combined with RDNet networked management,
system engineers get in-depth status monitoring for each enclosure, including limiters, temperature, and transducer
feedback, so the low end stays tight and controlled all night.
The Baltic birch plywood enclosure is treated with weatherproof polyurea coating and finished in either
full black or white, backed by a robust steel grille with internal acoustic foam for dust and humidity resistance.
Rubber feet on two sides, dual threaded pole mounts (top and side), and stabilizing brackets support
secure horizontal or vertical placement. With powerCON TRUE1 TOP mains connectors, balanced XLR audio
I/O, and RDNet Ethercon ports, the SUB 808-AS integrates quickly into modern rigs as a stand-alone sub, in subwoofer arrays,
or as the dedicated low-frequency partner for the KX 515-A.
- Real-World Applications and Sound Roles:
- Compact, low-profile subwoofer for mobile DJ rigs and Chicago event companies needing deep bass with minimal footprint.
- Club and lounge installs where sightlines and aesthetics matter as much as SPL.
- Corporate A/V, houses of worship, and multipurpose rooms requiring networked control and RDNet monitoring.
- Modular low-frequency element for cardioid and line-style sub arrays in live sound rental inventories.
- Full-range systems built around KX 515-A + SUB 808-AS for a powerful yet compact main PA.
Where the RCF SUB 808-AS Excels
- Fast Load-Ins: A low-profile cabinet, single side handle, and just 20 kg / 44.09 lbs make the SUB 808-AS easy to move, stack, and strike for clubs, weddings, and corporate shows.
- Low-Profile Footprint: At only 243.5 mm (9.59 inches) tall, the dual 8-inch enclosure slides under stages, along walls, or in front of risers without blocking the audience view.
- High-Impact Output: Dual vented 8-inch neodymium woofers and a 2000 W Class-D amplifier deliver up to 129 dB SPL with authority in the 40–400 Hz range.
- Road-Ready Build: A Baltic birch plywood cabinet with weatherproof polyurea coating, steel grille, and internal acoustic foam is engineered for daily transport and demanding tours.
- Clean Presentation: Available in full black or white, the SUB 808-AS blends into high-end venues, houses of worship, and design-conscious installs.
- Smart Placement Options: Rubber feet on two sides, dual M20 pole mounts for horizontal or vertical placement, and stabilizing brackets support secure setups in tight footprints.
- Networked Management: RDNet connectivity enables centralized control, status monitoring, and tuning as part of a larger RCF ecosystem.
- Reliable Performance: Built-in protections, including excursion management and fast limiting, help keep the low end consistent even at demanding show levels.
- Built for Chicago DJs: Ideal for quick ballroom turnovers, club takeovers, and mobile rigs that need compact but convincing bass for dancefloor-heavy playlists.
Control Modes for the RCF SUB 808-AS
The RCF SUB 808-AS keeps front-panel operation simple while unlocking deep tuning and monitoring through RDNet.
Whether you are building a single-sub mobile rig or a networked array of low-frequency elements, you can keep control
where it belongs: at front-of-house.
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Onboard Level Control: A dedicated volume control lets you trim the sub level relative to your tops for each room
or event, from subtle reinforcement to full-on dancefloor impact.
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RDNet Networked Management: With XLR audio I/O and RDNet Ethercon connectors, the SUB 808-AS drops into RCF’s
RDNet platform for remote management. System engineers can monitor VU meters, limiter activity, transducer status,
fan behavior, and temperature, and access DSP tools to refine system response.
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Bass Motion Control (BMC): RCF’s excursion management technology maps the woofer’s behavior and limits only
over-excursion, preserving low-frequency extension and punch without relying on steep high-pass filters that can smear phase.
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Integrated Protection: Built-in excursion protection, limiters, and fast limiting behavior are managed by the
onboard DSP, helping keep the sub operating safely at high output in demanding shows.
Used locally or as part of a larger RDNet system, these control modes help the SUB 808-AS stay consistent night after night,
even as rooms, stages, and set lists change.
Compact Low-Profile Bass Engineered for Modern Stages
The SUB 808-AS proves that you do not need a massive box to deliver convincing low end. Its dual 8-inch vented design,
40–400 Hz operating range, and 129 dB max SPL let you cover dancefloors and live rooms where a traditional 15-inch or 18-inch
sub would be visually or physically intrusive. The low profile means you can tuck units under stages, in front of risers, or
alongside platforms while keeping energy focused on the audience instead of the sightlines.
For mobile DJs and production teams working in tight Chicago spaces, that combination of output and discretion makes it easy
to meet client expectations without redesigning each room around the system.
Dual Neodymium 8-Inch Woofers with Bass Motion Control
Inside the enclosure, two neodymium 8-inch woofers with 2.5-inch voice coils are each powered by their own Class-D amplifier
channel. This two-channel approach allows the SUB 808-AS to keep tight control over cone movement and maximize efficiency from
a compact cabinet. RCF’s Bass Motion Control mapping keeps woofer excursion safely inside its linear range while preserving
the lowest audible frequencies.
The result is bass that feels solid and musical rather than bloated: kick drums stay defined, synth lines stay clear, and the
sub does not fall apart when you push into modern, bass-forward tracks.
RDNet Integration for Networked Subwoofer Systems
RDNet support turns the SUB 808-AS into a fully networked element in an RCF ecosystem. Through the RDNet software, system
technicians can group subs, monitor key performance metrics, and apply DSP adjustments from a central interface. RDNet’s
architecture is designed for everything from small club rigs to arena-scale deployments, so the same workflow scales as your
system inventory grows.
With RDNet Ethercon connectivity on each sub, you can keep low-frequency behavior consistent across multiple cabinets, align
them precisely with tops, and react quickly if any device shows unexpected status during a show.
Tour-Ready Baltic Birch Enclosure with Weatherproof Finish
The SUB 808-AS cabinet is built from high-strength Baltic birch plywood, internally reinforced for stiffness and wrapped in a
robust polyurea coating with weatherproof treatment. A strong powder-coated steel grille and acoustically transparent internal
foam protect the drivers from dust and humidity while maintaining clean acoustic performance.
With powerCON TRUE1 TOP mains connectors for secure AC in and out, the sub is ready for real-world stages, outdoor use, and
festival-style power distribution. This tour-ready construction gives rental houses, production companies, and working DJs
confidence that the sub will keep performing after repeated load-ins, truck rides, and event cycles.
Flexible Deployment and Pairing with KX 515-A Systems
Multiple M20 threaded points on the top and side of the SUB 808-AS, combined with rubber feet on two sides and stabilizing
brackets, provide flexible options for horizontal or vertical orientation. This makes it easy to integrate the sub into compact
arrays, under-stage lines, or discreet stacks under KX 515-A tops.
When combined with KX 515-A, the SUB 808-AS extends system bandwidth while maintaining the KX sonic character and phase
compatibility, giving you a cohesive full-range rig with a footprint small enough for lounges, restaurants, and mobile stages.
How to Deploy the RCF SUB 808-AS in the Field
Start by choosing the physical orientation that best fits your room. For low-profile front-of-stage coverage, place the
SUB 808-AS horizontally with the rubber feet down and use the top M20 threaded insert for poles if you are stacking tops
above. In tight spaces or where floor width is limited, use the side-mounted M20 insert, stabilizing brackets, and rubber
feet on the side to stand the cabinet vertically while keeping it solidly anchored.
Connect your line-level signal via the balanced XLR input and link additional subs using the XLR output. Power up the system
using the powerCON TRUE1 TOP in/out connectors so you can daisy-chain AC safely between cabinets. Set the onboard level to
match your tops, then use RDNet to group subs, apply any required alignment adjustments, and monitor limiter and temperature
status throughout the show.
For higher-output applications, deploy multiple SUB 808-AS units as a straight line across the front of the stage, or build
directional arrays using proper spacing and processing in RDNet. As a low-frequency extension for KX 515-A systems, position
each sub directly under or near its corresponding top for consistent coupling across the audience area.
Build compact, networked sub arrays that roll easily into venues, set fast, and deliver the kind of tight, musical bass Chicago dancefloors demand.
Why Choose the RCF SUB 808-AS from AVMaxx
AVMaxx specializes in building real-world systems around professional solutions like the RCF SUB 808-AS. Our team understands
how compact subs need to perform in ballrooms, lounges, clubs, and pop-up spaces across Chicago, and we translate that into
practical recommendations for box counts, placement strategies, and system pairings with tops such as the KX 515-A.
Because we work with active RCF systems in the field, we can help you plan RDNet networks, choose appropriate deployment
patterns, and decide when a low-profile dual 8-inch sub is the right choice over a larger-format cabinet. Whether you are
building a mobile rig, expanding a rental inventory, or upgrading an installed system, we focus on results: clean, impactful
bass 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 808-AS
How loud is the RCF SUB 808-AS for its size?
The SUB 808-AS reaches up to 129 dB max SPL from a compact, low-profile cabinet. Its dual 8-inch neodymium woofers and
2000 W peak Class-D amplifier give it enough headroom for serious dancefloor reinforcement in small to medium rooms.
What frequency range does the SUB 808-AS cover?
The subwoofer operates from 40 Hz to 400 Hz, providing deep low-frequency extension for kick, bass, and effects while
handing off cleanly to appropriately matched tops in your system.
Why is the SUB 808-AS a good choice for mobile DJs and Chicago events?
Its low profile, 20 kg weight, and side handle make it easy to move and hide, while the dual 8-inch design, 129 dB SPL,
and Bass Motion Control keep bass tight and punchy. That combination is ideal for Chicago DJs who need strong low end
without hauling oversized enclosures into every venue.
Can I monitor and tune the SUB 808-AS remotely?
Yes. The SUB 808-AS supports RDNet networked management. Using RDNet software, you can monitor limiter and temperature
status, view transducer feedback, and apply DSP adjustments as part of a larger RCF system.
What should I know about placement and mounting options?
The cabinet includes rubber feet on two sides, dual M20 threaded inserts on the top and side for pole-mounting, and
stabilizing brackets for secure vertical deployment. This makes it easy to set up horizontal or vertical stacks that
fit your stage layout and coverage goals.
Share your room layout, tops, and event style with AVMaxx, and we will help you design an RCF SUB 808-AS solution that delivers clean, confident low end for every show.
