Product Description

Part of the D-Line Series MK4 line of speakers, the RCF HD 12-A MK4 is a lightweight (at 38.36 lb) and portable active speaker, which delivers full-range sound with accurate high-frequencies, controlled deep bass, and stable SPL, even at high levels. With a design derived from the touring industry, it is well suited to withstand the rigors of live sound reinforcement or rentals applications, in clubs, corporate spaces, houses of worship, mobile DJ setups, and more.

The HD 12-A MK4 is equipped with a 1400W peak, Class-D digital amplifier, which drives 1000W into the 12″ woofer and 400W into the 1.0″, titanium compression driver. The speaker delivers a frequency response of 45 Hz to 20 kHz with a peak SPL output of 130 dB, and wide, 90°H x 60°V coverage angles. The integrated DSP manages the loudspeaker processing, including crossover and EQ, soft limiter, and dynamic bass boost. Phase and amplitude are corrected using proprietary FiRPHASE technology conceived for delivering a natural and transparent sound, with a balanced stereo image.

Easy to operate, the HD 12-A MK4 comes with XLR and 1/4″ balanced/unbalanced inputs for connecting a microphone, mixer, or audio device, and with a volume knob to set the level. Furthermore, the switchable Flat/Boost mode enables you to emphasize the bass response when playing at low volume, or keep it flat for all other applications.

The cabinet is molded with rugged polypropylene composite material (PP), and designed to dampen vibrations, even at maximum volume settings. It features a top, and side handles with rubber handgrips, which allow you to firmly hold the speaker, and move it easily. The HD 12-A MK4 can be mounted on a stand or a subwoofer pole, or positioned on its side to serve as a wedge monitor.

Key Features

  • D-Line Series MK4 portable active speaker for live sound reinforcement, stage monitoring, front-fill/side-fill, rental applications
  • Elegant and compact cabinet with rugged construction provides a reliable performance on the road
  • Use in clubs, music venues, corporate spaces, or for mobile DJ setups
  • 12″ woofer – delivers a fast and accurate reproduction of the mid-bass frequency range, and controlled deep bass
  • 1.0″ titanium compression driver – offers open and natural midrange frequencies, precise high-frequency reproduction, and sound projection. It also features a 1.5″ voice coil, and a neodymium magnet
  • 90°H x 60°V, wide-dispersion horn with constant directivity
  • Class-D amplifier – 1400W, 2-way peak power
  • Connect microphone, mixer, or audio device
  • Simple to operate plug’n’go design with double input (XLR or 1/4″ jack), and one volume knob
  • 130 dB maximum SPL – SPL power remains stable at high levels
  • 45 Hz to 20 kHz frequency response
  • Reflex port sized to optimize efficiency
  • Integrated DSP manages full loudspeaker processing, FiRPHASE filters, crossover and EQ, soft limiter, and dynamic bass boost
  • FiRPHASE proprietary and advanced FIR filtering technology delivers transparent sound, and balanced stereo image
  • Solid mechanical aluminum structure stabilizes the amplifier during transportation, and facilitates fan-less heat dissipation
  • Cabinet is molded with polypropylene composite material (PP) and designed to dampen vibrations, even at maximum volume settings
  • Internal reinforcement prevents any deformation of the cabinet
  • Rear profile design of the cabinet allows speaker to be used as a monitor wedge
  • Ergonomically designed top and side handles with rubber handgrips – allow to firmly hold the cabinet, and move it easily
  • Lightweight (at 38.36 lb) design for portability
  • Steel pole socket for mounting on a stand or on a subwoofer pole
  • Two M10 and three M6 fittings for flown applications
  • 115-230V operation, user switchable


RCF HD12-A MK4 Specs

PA Speaker
Configuration Active 2-Way
Total Power Capacity 1400 W Peak
700 W RMS
Amplifier Power Rating HF:
400 W Peak
200 W RMS
1000 W Peak
500 W RMS
Amplifier Class Class-D
HF Driver 1 x 1″ / 51 mm Titanium Dome
HF Voice Coil 1.5″ / 3.81 cm
LF Driver 1 x 12″ / 305 mm Woofer
LF Voice Coil 2.5″ / 6.35 cm
Magnet HF:
Frequency Response 45 Hz to 20 kHz -3 dB
Maximum SPL 130 dB (Peak)
Coverage Angle 90° H x 60° V
Input Sensitivity Line Input:
+4 dBu to -2 dBu
Mic Input:
-32 dBu
Protections RMS, Thermal
Audio I/O 1 x XLR 3-Pin Balanced Input
1 x 1/4″ TRS Balanced/Unbalanced Input
1 x XLR 3-Pin Male Balanced Output
Signal Processing
Crossover 1.6 kHz
Dynamic Processing Soft Limiter
AC Input Power User Selectable:
115 VAC, 60 Hz (T 6.3 A L 250 V) 
230 VAC, 50 Hz (3.15 A L 250 V) 
AC Power Connector 1 x VDE
Mounting 2 x M10
3 x M6
Handles 1 x Top
2 x Side
Cooling Convection
Construction Material Metal Grille, Polypropylene
Dimensions 25.5 x 15 x 15″ / 647 x 380 x 380 mm
Weight 38.4 lb / 17.4 kg
Packaging Info
Package Weight 45.5 lb
Box Dimensions (LxWxH) 26.7 x 16.5 x 16.5″