null content_copy

RCF ART 745A-MK4 Extreme Output Active Speaker

(You save $650.00 )
(No reviews yet) Write a Review

Pure audio bliss at unheard of levels, with unreal clarity! That is what the RCF ART 745A-MK4 offers musicians and disc jockeys. The RCF ART 745-A MK4 is the flagship speaker in its category. The titanium dome, 4.0 inch voice coil neodymium compression driver offers a unique vocal clarity and sound projection. The 15 inch neodymium low frequency transducer offers an extremely linear response and a precise, deep low frequency control. The transducers are produced using the most advanced assembly technologies. The amplifier delivers 1400 watts and is controlled by a DSP that takes care of crossover, equalization, phase control, soft limiting and speaker protections. 

  • 1,400 watt peak
  • 700 watt RMS digital amplifier
  • 133 decibel maximum sound pressure level
  • 90 by 60 degree, wide dispersion constant directivity horn
  • 15 inch NEO woofer with a high power 3.5 inch voice coil
  • HF NEO driver, titanium dome with a 4 inch voice coil
  • PFC power factor correction
  • DSP Processing
  • Weight: 43.2 lbs


    • Frequency Response -3 dB: 45 Hertz to 20,000 Hertz
    • Maximum SPL: 133 decibels
    • Horizontal coverage angle: 90 degrees
    • Vertical coverage angle: 60 degrees
    • Compression Driver: 1.5 inch neo with a 4.0 inch voicecoil
    • Woofer: 15 inch with a 3.5 inch voicecoil
    • Input signal: Bal / unbal
    • Input connectors: Combo xlr-jack
    • Output connectors: XLR
    • Input sensitivity: -2 dBu / +4 dBu
    • Crossover frequencies: 650 Hertz
    • Protections: Thermal, rms
    • Limiter: Soft limiter
    • Controls: Volume, EQ shape
    • Total power: 1,400 watts peak
    •    High frequencies: 400 watts peak
    •    Low frequencies: 1,000 watts peak
    •    Total power: 700 watts RMS
    •    High frequencies: 200 watts RMS
    •    Low frequencies: 500 watts RMS
    • Cooling: Convection / forced
    • Connections: VDE connector in
    • Cabinet Material: Composite PP
    • Hardware: (2) M10 flying points
    • Handles: 2 side, 1 top
    • Pole Mount/Cap: Yes
    • Color: Black
    • Height: 27.87 inches
    • Width: 17.2 inches
    • Depth: 15.31 inches
    • Net Weight: 43.2 lbs



The RCF loudspeaker line incorporates a vast range of transducers covering the entire audio spectrum. We design our transducers to optimise the relationship between the purity of sound, combining the absence of distortion and the ability to withstand high power levels over a long period of time. RCF develops advanced transducer technology including the application of high-tech materials such as Neodymium, Carbon Fibre, Pure Titanium, Kevlar, Kapton and Mylar hybrids. With over 60 years of design and manufacturing experience in the market, RCF has been instrumental in technological inventions such as: carbon fibre cone moulding, double silicon spiders, inside/outside voice coil windings to edge wound voice coil manufacturing and pure titanium diaphragm forming. Our latest developments have resulted in designing state of the art neodymium magnetic circuits, radically new voice coil ventilation systems and ground breaking direct drive voice coil assemblies.


At the core of RCF’s new transducer designs, significant amounts of time and resources were spent in terms of material science, design topology research and power testing in order to develop products with high structural strength, optimal thermal characteristics and the best possible power handling. RCF Precision engineers have developed a composite polyimide-imide former material capable of withstanding peak temperatures in excess of 380°C, well beyond the thermal requirements of modern professional audio systems. By combining this material with special adhesives, our inside-outside voice coil technology, dual silicone spiders, dual forced hyperventilation and cones based on a special fiber doping and treatment, the new RCF family of products features the industry’s most robust and reliable transducers.


RCF Precision engineers have developed a new ferrite magnet capable of delivering higher flux in a new, minimum weight design. Thanks to this new technology, all new RCF Precision ferrite products present the minimum weight for comparable performances. New specific magnet sizes and moulds have been developed to optimise the new design performances. RCF Precision set out to develop a magnetic circuit topology capable of delivering the highest, balanced level of performance in three specific areas: maintenance of a consistent, high integrity magnetic flux gap, distortion lowering design techniques and efficient integration of the magnetic circuit in a minimum weight design. The T-pole design is optimised to generate the minimum amount of flux modulation in the magnetic assembly during typical voice coil movement within the gap.


In our complex cooling designs individual components come together to create an ideal ventilation system. Commencing with the design of the basket, RCF Precision has focused on providing finned cooling channels while optimising the surface area available in order for the front magnetic plate to dissipate heat efficiently. When assembled and placed on the basket, the front plate, ceramic core and the rear plate form part of the ventilation system that is highlighted by cooling slots precision machined through all three components. RCF Precision’s unique double silicone sealed spider design functions as an air pump expelling hot air and drawing in cool air every time the cone assembly moves. This system provides cooler operating conditions and optimal power compression. The perfect balance of noise control and quantity of the air venting the inner side of the voice coil is guarantee from a diffractor placed at the centre of the pole piece.


The new RCF Precision features several state of the art technologies. The diaphragm and suspension are precision formed from ultra thin pure titanium, Kapton or Mylar. The suspension is based on an innovative design that drastically reduces distortion eliminating resonance points and assists in controlling suspension breakup modes. RCF has developed an oxygen free process of molding pure titanium ultra thin films in high quality, finely controlled shaped diaphragms. Our process offers superior sonic quality, extended to the highest audible frequencies which guarantee consistent power handling and reliability.


The top of the former is bent and bonded directly to the edge of the titanium diaphragm resulting in a Direct Drive configuration. Direct Drive guarantees optimal transfer of energy between the voice coil and the dome assembly, providing smoother, extended frequency response beyond 10KHz, reducing break up modes and lowering distortion. This assembly delivers high power handling along with excellent mechanical and thermal properties that make RCF neodymium compression drivers robust and reliable.