RCF SUB-8003-AS-MK3 18" powered PA subwoofer
Best high-output subwoofer for professional touring and live sound reinforcement.
The RCF SUB-8003-AS Mk3 is a powerful 18-inch powered PA subwoofer designed for demanding live sound and touring applications. It features a robust 2200-watt peak Class-D amplifier paired with a high-performance 18" transducer, delivering an impressive 135 dB SPL output across a 35-120 Hz frequency range. Advanced Bass Motion Control technology protects the woofer from damage, while comprehensive rear panel controls allow for precise adjustments. Its durable hardwood enclosure ensures reliability for professional use.
$2299.00
More SUB Options
Owner Satisfaction
4.7
/ 5
Category Rank
501
/ 6561
#501 in Speakers
Price vs Category Average
+57%
Above average
Woofer Size
18
/ inches
Who it's for
- System integrators requiring precise control over complex audio setups
- DJs and bands seeking powerful, room-filling low-end impact
- Live sound engineers managing large-scale concert venues
Who should skip it
- Solo performers needing portable gear for frequent transport
- Budget-conscious hobbyists or small-scale event organizers
- Beginners lacking experience with professional audio networking
Performance breakdown
Portability
Substantial weight requires two people for safe transport and stage placement.
Low-end output
Massive 18-inch transducer delivers authoritative, room-filling bass for professional applications.
Build durability
Rugged hardwood enclosure with polyurea finish handles the rigors of touring.
Signal processing
Advanced Bass Motion Control prevents distortion and protects the woofer driver.
Setup versatility
Integrated delay settings and cardioid presets simplify complex multi-subwoofer array configurations.
Thermal management
Fanless Class-D design ensures silent operation and reliable heat dissipation.
Key Specs
Woofer Size
18 inches
Peak Power Output
2200 watts
Maximum SPL
135 dB
Frequency Response
35-120 Hz
Dimensions
27.28"H x 19.88"W x 26.97"D
Weight
95.24 lbs
Enclosure Material
Multi-ply hardwood with polyurea finish
Input/Output Connectivity
XLR/TRS inputs, XLR outputs, Powercon AC
Features
- Delivers 2200W peak power for deep low-end punch.
- Advanced processing limits woofer over-excursion.
- Offers presets for Extended Low, Hard, and Cardioid.
- Includes two balanced XLR inputs and two XLR outputs.
- Rugged bass reflex enclosure with polyurea finish.
- Rear controls for delay settings up to 20 meters.
- Equipped with M20 threaded pole-mounting socket.
- Fanless Class-D amp design with aluminum heat sink.
What customers say
This professional subwoofer earns high praise for its exceptional output and robust build quality. Users consistently report that the powerful amplifier delivers deep, clean bass even at very high volumes, perfect for demanding live sound and DJ applications. Reviewers frequently highlight the unit's road ready construction, suggesting excellent long term reliability. The integrated digital processing is valued for simplifying system integration and tuning flexibility. While it is a premium investment, customers feel the superior performance and durability justify the cost. The only noted trade off is the expected weight of such a powerful 18 inch cabinet. Overall satisfaction confirms its status as a top tier, dependable low frequency solution for audio professionals.
Know before you buy
Bass Motion Control is a processing feature that prevents the woofer from over-excursion. It allows the subwoofer to maintain deep, punchy low-end performance without risking damage to the driver during high-volume use.
Yes, the SUB-8003-AS Mk3 includes a dedicated cardioid preset. This allows you to direct low-frequency energy toward your audience while minimizing bass buildup behind the stage.
The fanless design uses a high-efficiency aluminum heat sink to dissipate heat passively. This eliminates the risk of fan failure and prevents dust from being pulled into the electronics, making it very reliable for long-term professional touring.
The rear panel features built-in delay controls that allow you to set a delay of up to 20 meters. This is essential for time-aligning your subwoofers with your main speakers or other subwoofers in a large array.
Yes, it features a standard M20 threaded pole-mounting socket on the top panel. This provides a secure, stable connection for a speaker pole and your top cabinet.
The enclosure is constructed from multi-ply hardwood and finished with a rugged polyurea coating. This combination is designed to withstand the bumps and scrapes typical of professional live sound and touring environments.
Still have a question?
Ask Hayley anything about this product before you decide.