
Reflex Loaded Subwoofer
15” Subwoofer and Power Plant
Amplification, networking and DSP are all housed in MLA Mini’s companion MSX Power Plant, which includes 9 channels of Class D amplification – 1 channel for itself, and 8 channels to provide cellular drive of up to 4 bi-amped MLA Mini enclosures. Crossover, delay and EQ functions are implemented by a combination of IIR and FIR filters.


MLA Mini arrays and MSX’s can be remotely controlled over the U-NET™ network from a laptop or wireless tablet running VU-NET control software. Small-scale systems – such as the configuration of 4 x MLA Minis and 1 x MSX – can be set up to plug-and-play without external control, with onboard presets recalled by a rear panel selector switch.
The MSX is the same width as the MLA Mini and can be integrated into flown arrays or ground-stacked separately. It features a 15" (380mm)/4" (100mm) voice coil, long-excursion driver reflex-loaded in a very compact enclosure.
For complete installation versatility, the power plant module itself can be rack- mounted and its sub-bass amplifier channel used to power either an MSX or an alternative Martin Audio 4 Ohm passive subwoofer. For ultimate sub-bass performance, the MLA Mini/MSX combination can be used with the powered DSX subwoofer.
Data sheets, manuals and resources for the MSX

Our AV experts are ready to help you find the perfect solution for your project.
MLA Mini arrays and MSX’s can be remotely controlled over the U-NET™ network from a laptop or wireless tablet running VU-NET control software. Small-scale systems – such as the configuration of 4 x MLA Minis and 1 x MSX – can be set up to plug-and-play without external control, with onboard presets recalled by a rear panel selector switch.
The MSX is the same width as the MLA Mini and can be integrated into flown arrays or ground-stacked separately. It features a 15" (380mm)/4" (100mm) voice coil, long-excursion driver reflex-loaded in a very compact enclosure.
For complete installation versatility, the power plant module itself can be rack- mounted and its sub-bass amplifier channel used to power either an MSX or an alternative Martin Audio 4 Ohm passive subwoofer. For ultimate sub-bass performance, the MLA Mini/MSX combination can be used with the powered DSX subwoofer.
| ACOUSTICAL | |
| Type | 15” reflex loaded subwoofer |
| Frequency Response | 50Hz-150Hz ± 3dB -10dB @ 42Hz |
| Maximum SPL @ 1m | 133dB continuous, 136dB peak |
| DRIVER | 1 x 15” (380mm)/4” (100mm) voice coil, ultra-long excursion, high efficiency ferrite magnet |
| RATED POWER | 800W AES, 3200W peak |
| MSX DISPERSION | Omnidirectional. Cardioid arrays possible, using multiple MSX enclosures |
| AUDIO INPUT | |
| Connectors | Female XLR input, male XLR link output |
| Analogue Input Impedance | 20kΩ balanced to ground |
| Maximum Analogue Input Level | 6.15Vrms (+18dBu), over voltage protected |
| AES/EBU Impedance | 110Ω balanced, receive and transmit termination |
| INTERNAL PROCESSING | Multi-channel DSP, programmable via network, 10 PEQ/shelving filters per channel, Up to 48dB/Oct HPF and LPF, FIR filtering on MLA Mini channels, Up to 1 second of delay, Limiters with amplifier output current monitoring |
| NETWORK | |
| Connectors: | 2 x NL8 outputs to MLA Mini x 4 |
| Protocol | U-NET |
| AMPLIFIER MODULE | |
| Type: | 9 channel switch-mode, class D |
| Peak Output Power | 7000W total, 1400W MSX (or alternative 4 Ohm subwoofer), 700W MLA Mini LF x 4, 700W MLA Mini HF x 4 |
| Average Efficiency | 85% |
| Cooling | 2 x temperature controlled internal fans, 1 x low-speed internal blower, 2 x temperature controlled external fans |
| Maximum Ambient Temperature | 45°C (113°F) for full output |
| POWER SUPPLY | |
| Type. | Switch mode, fixed frequency with PFC |
| AC Input Operating Range | 100 – 240V ~ AC, 50 – 60Hz |
| Power Factors | > 0.95 |
| Nominal Power Consumption | 900W |
| Mains Connector | Neutrik® Powercon True1 |
| GENERAL | |
| Enclosure | Extensively braced multi-laminate birch-ply |
| Finish | Textured black PU coating |
| Protective Grille | Black HEX perforated steel |
| Fittings | Two skids on base, with mating channels on top, M20 top-mounted thread plate for MLA Mini pole, Integral flyware for suspension of up to 4 MSX, Large bar handle on each side, Two front-mounted latch plates for wheelboard, Optional weather protection cowl |
| IP Rating | Indoor (without weather protection cowl), IP 25 (with weather protection cowl) |
| Dimensions | (W) 500mm x (H) 510mm x (D) 575mm (675mm with vent flap open), (W) 19.7in x (H) 20.1in x (D) 22.6in (26.6in) |
| Weight | 58kg (128lbs), 65kg (143lbs) incl. wheelboard |
| Accessories | Flying pin, Ground stack bars, Ground stack base plate, Mains distribution system, Tour-grade network interconnects, Merlin Controller/U-NET Hub |
About Penguin Media Solutions
Penguin Media Solutions is a professional audio, video, and lighting design, installation, and maintenance company based in Brighton, UK. As an authorised Martin Audio dealer, we provide high-performance AV systems for commercial venues, hospitality, and event spaces across Brighton, London, and South-East England.
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