RCF SUB 905-AS MK3 Professional Powered 15" Subwoofer

At a Glance

• 2200W Class-D amplifier
• 15� woofer, bass reflex housing
• 40 to 120 Hz frequency response
• 133 dB max SPL
• Multi-ply hardwood polyurea coated
• Selectable gain, X-over, cardioid mode, and time delay
• Stereo XLR input, stereo XLR signal output

Legendary Subwoofers

RCF subwoofers are the first choice of many sound engineers, thanks to the very high SPL levels at very low frequencies, small dimensions compared to the competitors, self-powered design, long-term reliability, and impressive size/weight to SPL output ratio. Your crowd will be able to live an engaging immersive experience in both live sound and DJing applications.

Industry-Leading Subs

• Lightweight and powerful, RCF woofers are a reference in high performance. Engineers have developed RCF Precision Transducers with new specific magnet sizes and molds to optimize magnetic flux while maintaining a low weight.
• The 15", 3.0" voice-coil magnetic-circuit topology is capable of delivering the highest balanced level of performance in three specific areas: maintenance of a consistent high-integrity magnetic flux gap, exceptionally low distortion, and efficiently integrating the magnetic circuit in a minimum weight design.
• The T-pole design optimization generates the minimum amount of flux modulation in the magnetic assembly during typical voice-coil movement within the gap.

Power That Moves

• The most powerful amplifier in its class. RCF's improvements in transducer design make RCF's woofers stronger and powerful, so the amplifier follows the evolution. With 1100W RMS power, RCF's Class-D amplifier is able to manage extreme sound-pressure levels with an ultrafast attack, realistic transient response, and very low heat loss. They are so energy-efficient that there's no need for a cooling fan�the amplifier is attached to a solid aluminum heat exchanger in the rear of the cabinet with no moving parts.
• The stereo input circuit with crossover features a new low-distortion design with an advanced safety limiter, maintaining the true character of the input signal at all levels. RCF amplifiers are designed according to EN62368-1 for maximum safety and present a switched-mode power supply section, joining high-efficiency with minimum weight.

Bass Motion Control

• When searching for extended bass with enhanced performance, RCF engineers found a way to remove the high-pass filter, replacing it with a forward-thinking approach. Introducing BMC (Bass Motion Control), the newly advanced woofer excursion-management feature. The speaker equipped with BMC can handle the lowest audible frequencies without affecting woofer stability, with extended linearity and better sound integrity.
• The BMC method works by creating a complete map of the dynamic behavior of the woofer, to generate a custom algorithm that only limits overexcursions. This gives total freedom of signal reproduction to the transducer. When high-pass filters normally protect the woofer motion from becoming destructive but change the phase behavior, the new BMC algorithm breaks conventional rules.

Tour-Ready Workhorse

The RCF cabinets are made of high-quality multi-ply hardwood coated with a black polyurea finish. The subs are stackable and lightweight, for easy setup and teardown, thanks to the ergonomic handles. Pole receptacles on the top and side allow the use of the box in various configurations. The powder coated front grille integrates a special sound-transparent foam backing on the inside to further protect the transducers from dust.

RCF SUB 905-AS MK3 Specs

Configuration	Active Subwoofer
Enclosure Type	Subwoofer
Total Power Capacity	1100 W RMS 2200 W Peak
HF Driver	No
MF Driver	No
LF Driver	1x 15" / 381 mm Inverted Woofer
Wireless Connectivity	No
Color	Black

Enclosure Type	Subwoofer
Total Power Capacity	1100 W RMS 2200 W Peak
Amplifier Class	Class-D

HF Driver	No
MF Driver	No
LF Driver	1x 15" / 381 mm Inverted Woofer
LF Voice Coil	3" / 76.2 mm

Frequency Response	40 Hz to 120 Hz
Maximum SPL	133 dB
Input Sensitivity	+4 dBu to -2 dB
Protections	RMS, Thermal

Audio I/O	2x XLR 3-Pin Female Balanced/Unbalanced Link Input 2x XLR 3-Pin Male Balanced/Unbalanced Link Output
Network I/O	No
USB I/O	No
Wireless Connectivity	No
Bluetooth	No
Mobile App Compatible	No

EQ	Yes
Parametric EQ	No
Semi-Parametric EQ	No
Dynamic Processing	Soft Limiter
Alignment Delay	Yes
Phase Adjustment	Yes

AC Input Power	100 to 120 VAC, 50 / 60 Hz 220 to 240 VAC, 50 / 60 Hz
AC Power I/O	1x IEC Input

Color	Black
Mounting	1 x 1.4" / 35 mm Pole Socket (Top)
Handles	1x Each Side
Cooling	Convection
Construction Material	Plywood, Steel
Dimensions	23.2 x 23.2 x 16.5" / 58.9 x 58.9 x 41.9 cm
Weight	57.3 lb / 26 kg

Package Weight	79.22 lb
Box Dimensions (LxWxH)	25.5 x 25.5 x 18.5"