RCF SUB 702-AS MK3: Compact 12" Punch for Mobile DJs and Live Sound
The SUB 702-AS MK3 is a portable 12" active subwoofer built for small to mid-sized rooms where fast load-ins and clean, musical low end win the night. A
1400 W Class-D amplifier (700 W RMS) and a high-power ceramic-magnet transducer deliver up to 129 dB with authority. Bass Motion Control excursion
management preserves phase integrity and extends usable low frequency for kick, bass guitar, and modern DJ content. With stereo XLR I/O, selectable
crossover behavior, polarity reverse, EQ, and convection cooling, this sub integrates quickly and runs quietly from ceremony to last dance.
Internal routing is straightforward: balanced L/R inputs feed onboard processing and limiting, then selectable LINE or HIGH PASS outputs drive your satellites. Choose
your crossover points, confirm polarity at the dance floor, set gain, and go. Pair with 8" or 10" tops for tight 2.1 rigs; add a second sub when you need
wider coverage or extra headroom.
- Real-World Applications and Sound Roles: Mobile DJ 2.1 systems • Acoustic and small band reinforcement • Corporate AV and social events • Small club installs
Where the RCF SUB 702-AS MK3 Excels
- Right-Sized Output: 129 dB max SPL and a 40–120 Hz range deliver solid punch without overpowering intimate rooms.
- Quick 2.1 Integration: Stereo XLR in/out with LINE or HIGH PASS simplifies wiring and changeovers.
- Clean Crossover Hand-off: Low-pass to sub at 80 Hz with a 110 Hz satellite high-pass option reduces low-mid mud.
- Reliable All-Night Performance: Convection-cooled amplifier and soft limiter keep levels consistent.
- Transport-Friendly: Baltic birch cabinet, polyurea coating, and side handles survive daily mobile work.
- DJ-Focused Control: Volume, EQ, and polarity reverse let you adapt quickly to tricky ballrooms and clubs.
- Ideal Pairings: Optimized for 8" or 10" tops; scale to dual subs for broader dance floors.
Control Modes for RCF SUB 702-AS MK3
- Inputs/Outputs: Stereo XLR inputs; stereo XLR outputs selectable as LINE (full-range thru) or HIGH PASS to satellites.
- Crossover: Sub LOW-PASS 80 Hz; satellite HIGH-PASS 110 Hz option for compact tops.
- Polarity Reverse: 0°/180° switch to maximize summation with your mains at the audience position.
- EQ and Level: Onboard EQ and VOLUME for tonal balance and gain matching.
- Input Sensitivity: Selectable -2 dBu or +4 dBu for mixer compatibility.
- Protections: Electronic equalization, soft limiter, and thermal/RMS safeguards.
Power That Moves Without the Bulk
A 1400 W peak / 700 W RMS Class-D module delivers fast transient response with low heat loss. The silent, fan-free design relies on a solid aluminum
heat exchanger for dependable performance during long receptions, showcases, and club sets.
Bass Motion Control
BMC maps the woofer’s dynamics and limits only over-excursions, maintaining phase behavior while extending low-frequency linearity. The result is deeper,
more natural bass that stays tight as the room fills.
Built to Work
The Baltic birch enclosure with scratch-resistant polyurea coating and a powder-coated steel grille is built for daily transport. Ergonomic side handles
speed load-ins, and the top M20 threaded mount supports your satellites securely.
How to Deploy the RCF SUB 702-AS MK3
Place the sub slightly forward of the mains to reduce boundary cancellations. In wider rooms, use a pair spaced symmetrically and mirror settings. Keep
cable runs short and tidy, and always confirm polarity where the audience stands.
- 2.1 Routing: Mixer L/R ? sub inputs; set outputs to HIGH PASS to feed satellites.
- Starting Points: Sub low-pass at 80 Hz; try a 110 Hz high-pass on compact 8"–10" tops.
- Gain Structure: Set mixer clean, raise sub VOLUME to taste, then trim EQ.
- Scaling Up: Add a second sub for smoother coverage and additional headroom.
Tune at the dance floor first—set crossover, verify polarity, then match gain for tight, musical low end.
Why Choose the RCF SUB 702-AS MK3 from AVMaxx
AVMaxx supports Chicago DJs, bands, and event pros with field-aware deployment advice and bundled pairings that match real venue challenges. From
crossover choices to polarity checks, we help you get consistent results night after night.
Lean on our local expertise for rigs that set up fast, sound bigger than they look, and keep the dance floor moving.
Frequently Asked Questions — RCF SUB 702-AS MK3
How loud and how low does it go?
Maximum SPL is 129 dB at 1 m with a frequency response of 40 Hz to 120 Hz, powered by a 1400 W peak / 700 W RMS Class-D amplifier.
What crossover settings should I start with?
Use a sub low-pass at 80 Hz. Feed your tops from the sub’s HIGH PASS outputs and evaluate a 110 Hz high-pass when using compact 8"–10" satellites.
Which controls are on the rear panel?
Stereo XLR inputs and outputs (LINE or HIGH PASS), VOLUME, EQ, polarity reverse, crossover selection, and input sensitivity of -2 dBu / +4 dBu.
Is the amplifier fan-cooled?
No. It uses convection cooling with a solid aluminum heat exchanger for quiet, reliable operation.
DJ use: will it pair well with 8" or 10" tops?
Yes. The SUB 702-AS MK3 is designed as an ideal complement for 8" or 10" loudspeakers in compact 2.1 rigs.
What are the size, weight, and mounting options?
Cabinet dimensions are 523 × 360 × 515 mm (20.59 × 14.17 × 20.28 in) and weight is 21.5 kg (47.4 lb). A top M20 threaded pole mount supports satellites.
Tell us your room size and tops, and we’ll tune a SUB 702-AS MK3 setup that hits hard and stays musical.
