| Audio | |
| Input impedance | ＜10k Ohm Impedance balanced |
| Output impedance | ＜100R Impedance balanced |
| A/D dynamic range | 118dB |
| D/A dynamic range | 118dB |
| Maximum input level | +20dBu |
| Maximum output level | +18dBu |
| Total harmonic distortion | ≦0.003%(+4dBu 1kHz) |
| Frequency response | 20Hz~40kHz |
| Crosstalk | ≦-95dB |
| SNR | ≧113dB (A weighting) |
| Noise floor | ≦-94dBu (A weighting) |
| Common Mode Rejection Ratio | 60dB |
| Number of analog input channels | 4 |
| Number of analog output channels | 4 |
| Rs485 control port | 2 |
| Network control port | 1 |
| DSP Processing | |
| Signal generator | white noise/pink noise, level range: -30dBu~+10dBu |
| input & output gain | -18 dB ~ +12 dB, step 0.1dB |
| Noise gate | Threshold range: -80dBu~-45dBu Attack time: 1ms~1000ms; Release time: 1ms~1000ms |
| Dynamic loudness filter | Gain range: 0dB-10dB Attack speed: fast/medium/slow |
| Parametric equalizer | Input channels up to 31 optional types of PEQ output channels up to 8 optional types of PEQ |
| Optional types include | Bell filter, 1st order high Shelf filter, 2nd order high Shelf filter Variable Q high Shelf filter, 1st order low Shelf filter, 2nd order low Shelf filter Variable Q low Shelf filter, 1st-order low-pass filter, 2nd-order low-pass filter Variable Q low pass filter, 1st order high pass filter, 2nd order high pass filter Variable Q high pass filter, band pass filter, notch filter 1st order allpass filter, 2nd order all-pass filter with variable Q value |
| The center frequency | adjustable within the frequency range of 20Hz~20kHz with a step accuracy of 1Hz |
| Q value/bandwidth | The Q value range of Bell filter is 0.4~128, the step is 0.01 The range of the Q value of the Chevron/high-pass/low-pass filter is: 0.1~5.1, and the step is 0.01 The value range of bandpass/notch filter Q is: 4~104, step is 1 |
| Equalizer gain range | -15dB～+15dB |
| IIR crossover filter | Butterworth slope: 6/12/18/24/36/48dB per octave Bessel slope: 12/24dB per octave Linkwitz-Riley slope: 12/24/36/48dB per octave NXF horn filter slope is 40/45/50/50/55/60/65/70/75dB per octave |
| MIR linear phase filter | Linkwitz-Riley: 24/48dB per octave,NXF-40per octave |
| FIR crossover filter | type; high pass/low pass/band pass/external import Taps range: 256 ~ 512,slope range 21 ~ 120dB per octave Time window type: Rect / Sinc / Keiser /Hanning / Hamming / Blackman /Blackman-Harris/ Blackman-Nuttal / Nuttal/Keiser -Bessel/Sine |
| RMS compressor | Starting threshold range: -10dBu~ +20dBu; Compression ratio range:2~32: 1; Soft and hard knee: 0~100% Attack time:0.1ms~1000ms; Release time: 10ms~15000ms Gain compensation:Maximum 12dB |
| Peak limiter | Threshold range: -10dBu~ +20dBu Attack time: 1ms~1000ms; Release time: 10ms~3000ms |
| Hard limiter | Threshold range: -10dBu~ +18dBu |
| Delay | The adjustable delay time of each input channel + output channel is 452ms, Step accuracy 0.0104ms (10.4us) |
| FIR filter | Each input channel and output channel can import FIR filter with 48kHz sampling rate and 512 taps |
| General | |
| Preset | 32 |
| size | 482x44x207mm 1RU |
| Package size | 560x320x110(mm) |
| Net/Gross weight | 3.0 Kg / 3.5 Kg |
MIR440A
MIR440A is a digital audio processor newly designed by Marani. It has extremely low noise floor, high dynamic range and powerful internal DSP to cover most of the usage scenarios. Whether in meeting rooms ,theaters , touring performances, or even large-scale tours, you can use the A series processors. Advanced circuit design and original DSP algorithm are the core of pure and high-quality sound.
In the signal processing part of MIR440A, inside powerful MARANI DSP, DSP and AD/DA converters are running at 96KHz sampling rate, complete processing functions provide a complete speaker crossover solution.
From input gain/delay/noise gate/EQ/compression/FIR ，tooutputgain/delay/polarity/frequency division/FIR/EQ/compression/compression, there are up to 16 types of parametric equalizer (PEQ) The filter type can be selected. The output crossover filter has the classic Linkwitz-Riley /Bessel/Butterworth, and there are also NXF horntype filters and FIR filters with a slope of up to 120dB per octave. The newly added MIR linear phase frequency divider filter can make the phase of the crossover point easier to join and produce a lower delay. Everything we provide is for better sound.
Added DSP plug-in, providing 96kHz FIR filter/highorder signal generator/RTA real-time spectrum analyzer, etc.
The newly designed Hard Limiter (Hard Limiter) allows a constant rate limit on signals exceeding the threshold at any threshold to better protect the speaker unit.
Each input and output channel provides a maximum 512-tap FIR filter, which can be customized by third-partysoftwaretogeneratetheFIR convolution you need. It can be used for speaker presets to improve the phase response and control the directivity according to requirements.
The newly added MIR linear phase divider filter has the filter shape of the traditional IIR filter (Linkwitz-Riley 24+48/oct), but does not produce any phase shift, and the resulting delay is about 50% of the FIR filter.
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