MLD

In order to match the performance and tonal balance of MLA, the MLD has been designed around the same acoustic format and electronics package. Coherent arrays of MLA and Downfill can easily be constructed to seamlessly cover the audience planes.

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Description

Features

  • Downfill for MLA system
  • Three-way all-horn design delivers<> LF/MF/HF peak SPL’s of 139/139/140dB
  • 120°H x 20°V coverage
  • 52Hz-18kHz ± 3dB full bandwidth frequency response

Applications

  • Large-scale touring sound reinforcement for<> outdoor festivals, stadia, arenas and concert halls
  • Premium fixed installations in<> concert halls, theatres and sports venues

The MLD Downfill is an important MLA System component. Using just one – or at most – two Downfills to cover the first few rows maximises the projection and efficiency of the entire array.

Line array systems project, or throw better when the inter-cabinet angles are small. Unfortunately real-world requirements often dictate that the flown array must cover right up to the stage barrier. Arrays designed in this manner take on the familiar, highly-curved, banana shape. This is wasteful of array elements as almost half the array ends up being used to cover the first thirty metres/one hundred feet – leaving fewer boxes to reach the back seats.

The solution is to add a cabinet with a wider vertical dispersion. In the Downfill’s case this is 20°. Using only one – or at the most two – Downfills at the bottom of an array results in a lower curvature more directional array that projects much further and covers right up to the stage barrier.

The Downfill’s benefits are not confined to the vertical plane. With an extremely wide horizontal dispersion of 120°, the Downfill reaches to front-row-central as well as the ends of the front rows.

Our HiBlade™ patent-pending technology ensures ultra-high frequencies propogate right out to the edges of the dispersion pattern. Conventional 120° horns without this device tend to lose high frequency sparkle rapidly, as the listener moves off axis.

Additional information

Datasheet

https://martin-audio.com/downloads/datasheets/MLDdatasheet.pdf

Userguide

https://martin-audio.com/downloads/userguides/MLAandMLACompactSystemUserGuide.pdf

Specification

Acoustical
TYPE Three-way cellular drive, active array element
FREQUENCY RESPONSE (1) 52Hz-18kHz ± 3dB
MAXIMUM SPL
  • LF: 133dB continuous, 139dB peak (3)
  • MF: 133dB continuous, 139dB peak (4)
  • HF: 134dB continuous, 140dB peak (4)
Drivers
LF 2×12” (300mm)/3” (75mm) voice coil, ultra-long excursion, neodymium magnet drivers, Hybrid® bass horn loaded
MF 2 x 6.5” (165mm)/2” (50mm) coil, neodymium magnet drivers, horn loaded
HF 3 x 1” (25mm) exit neodymium magnet compression drivers, horn loaded
Rated Power (2)
LF 800W AES, 3200W peak
MF 400W AES, 1600W peak
HF 150W AES, 600W peak
Dispersion
  • (-6dB): 120º horizontal
  • (-10dB): 140º horizontal
  • 20˚ vertical
Crossover Frequencies
  • 320Hz: 8th-order Linkwitz-Riley
  • 4kHz: Vanishing Point™ FIR filters
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
NOMINAL SYSTEM GAIN 28.5dB
AES/EBU IMPEDANCE 110Ω balanced, Receive and transmit termination
Network
CONNECTORS 2x IP68 rated 8-way, quick-release type
PROTOCOL U-NET
Amplifier Module
TYPE Six channel Class D, fixed-frequency
PEAK OUTPUT POWER 6000W
AVERAGE EFFICIENCY 75%
COOLING 4 x temperature controlled internal fans
1 x low-speed internal blower
1 x temperature controlled external fan
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
CONSUMPTION 900W
MAINS CONNECTOR 16A IEC309 (Ceeform) – IP44 rated
General
ENCLOSURE Vertical trapezoid with 10º wall angle, multi-laminate birch and poplar-ply construction
FINISH Textured black PU coating
PROTECTIVE GRILLE Black HEX perforated steel
FITTINGS Proprietary rigging system Bar handles on each side
Protective Rubber side-cheeks incorporating skids Wheel-board
Transit cover
Weather protection cowl
IP RATING IP 24
DIMENSIONS (inc. wheel-board) (W) 1136mm x (H) 454mm (458mm) x (D) 680mm (840mm)
(W) 44.7 x (H) 17.9in (18in) x (D) 26.8in (33.1in)
WEIGHT (ex. wheel-board) 91.5kg, 201lbs