Marani Digital Amplifier MDA44T - Marani - Versterkers - Geluid
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Marani Digital Amplifier MDA44T
MDA44T is a highly fexible, powerful and intelligent 4-Channel Class D power amplifier delivering up to a total of 3200W. Designed to meet the most demanding portable and fixed installation sound systems, it provides a full set of value added features such as high output power, efficient cooling system, on board DSP and USB /RS485/Ethernet networking for monitoring and control via PC software. To guarantee maximum reliability, the MDA44T includes 2 highly efficient Switch Mode Power Supplies with PFC, which individually provering a set of 2 channels. The 4 output stages use the well known Self-Oscillating PWM topology, obtaining low distortion and efficiency up to 90% @ full load and also equipped with a full set of circuit protections. The amplifier has been designed in order that the output power delivered to the load, has the ability to manage high dynamic signals without modifying the original source or heavily affecting the continuous average power.
MDA44T is more than just an amplifier. It is also a capable and sophisticated loudspeaker processor thanks to its powerful DSP Engine and high performance 24 Bit AD/DA Converters. It offers 4 channels of crossover filters, parametric EQs, and dynamics processing alignment delay, everything needed to optimize a loudspeaker system. In addition the Clip/Limiter function provides output monitoring to prevent speaker damage with gentle gain reduction at clip threshold. The MDA44T supports a full matrix mixing mode where inputs may be routed/mixed in any ratio to any output. All setup parameters for input mixing, DSP features and limiter setting are accessible on the front panel, along with Lcd backlight display.
Outstanding Performance | High power output: 4 x 800W or 2 x 1400W (Bridge Mode) Two independent Switched-Mode Power Supplies with dual voltage auto selection Class D output stages with Efficiency up to 90% @ full load Full protection circuitry including Over-Current, Over/Under-Voltage, Output DC and Over-Temperature Four processed outputs for use in driving additional poweramplifiers Excellent sonic performance with 24bit high end converters coupled with 48kHz sample rate 4 inputs, 4 outputs with full matrix mixing |
Top-grade DSP Engine | 5 band parametric equalization per input channel 7 band parametric equalization per output channel Each band can be switched to Bell, Low/High Shelving, Low/High-Pass, All-Pass, Band-Pass and Notch Low/High Shelving, Low/High-Pass, can be selected as 1st and 2nd order, variable Q response Crossover filters with slopes from 6dB/Octave up to 48dB/Octave including Butterworth, Bessel, Linkwitz-Riley and customizable topologies Each output features a precision dynamic range controller composed of a Peak Limiter and a RMS Compressor with selectable ratio and variable knee Adjustable Delay time up to 850 ms for every input and output channel |
Direct PC/Network Connection | Front panel USB connector for direct PC communications Ethernet interfaces, RS485 connection for system setup, monitoring and control via manageable remote PC software |
Control | Front panel interactive LCD display for local access and configuration Front panel 7-LED level meter indicators per channel Simultaneous control up to 32 units via PC software Up to 60 storable user presets |
Number of Channels | 4 |
Max Output Power @ 8 Ω | 4 x 400W; 2 x 1400W (Bridge) |
Max Output Power @ 4 Ω | 4 x 800W |
Output Circuitry | Class D - full bandwith PWM modulator with ultra low distortion |
Output Voltage | 80 Vp / 160 Vpp (unloaded) / Bridged 160 Vp / 320 Vpp (unloaded) |
THD @ Rated power 4Ω (1kHz) | <0.05% (20 Hz - 20 kHz, (8Ω load, 3dB below rated power) |
Signal To Noise Ratio | >120 dB (A-weighted, 20 Hz - 20 kHz, 8Ω load) |
Frequency Response | 20 Hz - 20 kHz ± 0,15 dB (8Ω load, 1 dB below rated power) |
Damping Factor | >1000 (8Ω load, 1kHz and below) |
Power Supply | Two independent Universal and Regulated Switch Mode Power Supplies |
Operating Range | Universal Mains, 85-265V (dual voltage auto selection) |
Consumption / Current draw and Thermal dissipation @ 230 V | 50W / -A / 170.7 BTU/h (Idle) 670W / -A / 921.8 BTU/h (I/8 max. power@4Ω) |
Protections | Over-Current, Over/Under Voltage, Output DC and Over-Temperature |
Analog Input | 4 x XLR electronically balanced |
Analog Output | 4 x XLR electronically balanced |
Digital Input | 1 SPDIF; Gain 0dBu |
DSP & Processing
AD & DA Converters | 1x AK5388 24bit, 2x AK4396 24bit |
DSP Engine | Dream SAM3716, 24bit (data) x 96 bit (coeff.) |
DSP Resolution | 24×32 bit for filtering process 96 bits resolution on intermediate computation results |
Parametric Equalization | 5 filters per each input and output selected as Bell or Shelving |
Filter Type | Bell, 1st /2nd Order Shelvings with -3dB at cutting Freq.; Symmetrical Shelving with variable Q; Low/High-Pass with variable Q, 1st /2nd Order; All-Pass (90°/180° Phase rotation at the cutting freq.), Band-Pass and Notch. |
Filter Gain | From -15dBu up to +15dBu by 0.5dBu resolution steps |
Center Frequency | Selectable with a 1/24th of octave resolution step from 20Hz up to 20kHz |
Filter Q/BW | Q from 0.5 up to 3 by 0.05 resolution steps |
Crossover Section HPF/LPF | Butterworth 6/12/18/24/48dB per octave Bessel, Linkwitz-Riley and custom 12/18/24/48dB per octave. Filter resolution 1/24th of octave |
RMS Compressor and Peak Limiter | Threshold from 20dBu up to -10dBu Attack time from 5ms up to 200ms (1ms resolution up to 20ms, 10ms resolution up to 100ms and 20ms resolution up to 200ms) Release time from 0.1 sec up to 3 sec (0.1sec resolution) Ratio from 1:1 to 32:1 (Compressor only) Adjustable Soft or Hard Knee (Compressor only) |
Delay | 848,998 ms 21us increment/decrement steps per channel |
General
Device Presets | 60 User Presets |
Front Panel | 2×24 character LCD display with green LED backlight 7-LED meter per input channel -20dBu to +15dBu, clip 7-LED meter per output channel -15dBu to +15dBu, clip and limiter mode Blue LED (Edit) per channel Red LED (Mute) per channel NAV/PM1 Rotary encoder push button switch PM2, PM3, ENTER, ESC, UTILITY push button switches EDIT/MUTE push button per channel USB type B connector Power on/off switch |
Rear Panel | 4 x XLR female connector (Input) 4 x XLR male connector (Processed Output) 4 x Neutrik® Speakon NL4 (Speaker Outputs) 1 x RCA connector (SPDIF input) 2 x RJ45 for M-LAN (RS485) and Ethernet connection (10/100 TCP-IP) 2 x Ground-lift toggle switch (USB-TCP/IP and MAIN) IEC C13 16A connector; Power on/off switch |
Dimensions | 19"x 3.5"x 20.3" (483x89x515mm) 2RU |
Weight, Net / Shipping | 20 lbs (9,5 Kg) / 29 lbs (13.5 Kg) |